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All the Fundamental Massless Fermion Fields in Superstring Theory: A Rigorous Analysis 被引量:1
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作者 Edward B. Manoukian 《Journal of Modern Physics》 2012年第9期1027-1030,共4页
A systematic rigorous analysis of both massless fermion fields in the mass spectra of superstring theory is carried out. Our interest is in dynamical aspects of these fields. An explicit novel expression for the propa... A systematic rigorous analysis of both massless fermion fields in the mass spectra of superstring theory is carried out. Our interest is in dynamical aspects of these fields. An explicit novel expression for the propagator of the massless Rarita-Schwinger field (the gravitino), in the mass spectrum involving massless fermions in superstring theory in 10 dimensions, is derived. The analysis is carried in the presence of a non-constrained external source so that the full expression of the propagator emerges. The number of associated degrees of freedom is also obtained. We work in a Coulomb-like gauge. The massless Dirac field (the dilatino), the other massless fermion field in the mass spectra of superstring theory in 10 dimensions, is first investigated to this end. 展开更多
关键词 MASSLESS FERMION FIELDS in superstring THEORY Rarita-Schwinger Field (the Gravitino) in 10 Dimensions Propagator THEORY
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THE BETHE-SALPETER EQUATION OF SUPERSTRINGS
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作者 卫华 阮图南 《Science China Mathematics》 SCIE 1989年第3期305-315,共11页
The concept of bound states for superstrings is analyzed, and using Schwinger’s func-tional method, the equation of the 4-string Green functionals for superstring fields, theequation of corresponding wave functionals... The concept of bound states for superstrings is analyzed, and using Schwinger’s func-tional method, the equation of the 4-string Green functionals for superstring fields, theequation of corresponding wave functionals and the orthonormality relation of the bound-state wave functionals have been derived. 展开更多
关键词 superstring FIELD theory Schwinger’s FUNCTIONAL method Dyson’s EQUATIONS Bethe-Salpeter equation.
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Kerr Black Hole Geometry Leading to Dark Matter and Dark Energy via E-Infinity Theory and the Possibility of a Nano Spacetime Singularities Reactor 被引量:8
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作者 Mohamed S. El Naschie 《Natural Science》 2015年第4期210-225,共16页
The present paper is basically a synthesis resulting from incorporating Kerr spinning black hole geometry into E-infinity topology, then letting the result bares on the vacuum zero point Casimir effect as well as the ... The present paper is basically a synthesis resulting from incorporating Kerr spinning black hole geometry into E-infinity topology, then letting the result bares on the vacuum zero point Casimir effect as well as the cosmic dark energy and dark matter density. In E-infinity theory a quantum particle is represented by a Hausdorff dimension Φ where Φ =2/(√5+1) . The quantum wave on the other hand is represented by Φ2 . To be wave and a particle simultaneously intersection theory leads us to?(Φ) (Φ)2= Φ3 which will be shown here to be twice the value of the famous Casimir force of the vacuum for a massless scalar field. Thus in the present work a basically topological interpretation of the Casimir effect is given as a natural intrinsic property of the geometrical topological structure of the quantum-Cantorian micro spacetime. This new interpretation compliments the earlier conventional interpretation as vacuum fluctuation or as a Schwinger source and links the Casimir energy to the so called missing dark energy density of the cosmos. From the view point of the present work Casimir pressure is a local effect acting on the Casimir plates constituting the local boundary condition while dark energy is nothing but the global combined effect of infinitely many quantum waves acting on the M&#246bius-like boundary of the holographic boundary of the entire universe. Since this higher dimensional M&#246bius-like boundary is one sided, there is no outside to balance the internal collective Casimir pressure which then manifests itself as the force behind cosmic expansion, that is to say, dark energy. Thus analogous to the exact irrational value of ordinary energy density of spacetime E(O)=(Φ5/2) mc2 we now have P (Casimir) = (Φ3/2)(ch/d2) where c is the speed of light, m is the mass, h is the Planck constant and d is the plate separation. In addition the new emerging geometry combined with the topology of E-infinity theory leads directly to identifying dark matter with the quasi matter of the ergosphere. As a direct consequence of this new insight E=mc2 which can be written as E = E (O) + E (D)?where the exact rational approximation is E (O)=mc2/22 is?the ordinary energy density of the cosmos and the exact rational approximation E (D)=mc2/(21/22) is the corresponding dark energy which could be subdivided once more albeit truly approximately into E(D)=mc2/(5/22)?+mc2/(16/22)??where 5 is the Kaluza Klein spacetime dimension, 16 are the bosonic extra dimensions of Heterotic superstrings and 5/22 □?22% is approximately the density of the dark matter-like energy of the ergosphere of the Kerr geometry. As for the actual design of our nano reactor, this is closely related to branching clusters of polymer, frequently called lattice animals. In other words we will have Casimir spheres instead of Casimir plates and these spheres will be basically nano particles modelling lattice animals. Here D=?4 will be regarded as spacetime dimensionality while D=6 of percolations are the compactified super string dimensions and D=8 is the dimension of a corresponding super space. 展开更多
关键词 Casimir Effect Dark ENERGY E-INFINITY Cantorian SPACETIME Kerr SPACETIME GEOMETRY ENERGY from the Ergosphere Spinning Black Holes NANO SPACETIME Reactors Kaluza-Klein SPACETIME Heterotic superstringS
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On a Fractal Version of Witten’s M-Theory 被引量:12
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作者 Mohamed S. El Naschie 《International Journal of Astronomy and Astrophysics》 2016年第2期135-144,共10页
Starting from Witten’s eleven dimensional M-theory, the present work develops in an analogous way a corresponding dimensional fractal version where . Subsequently, the new fractal formalism is utilized to determine t... Starting from Witten’s eleven dimensional M-theory, the present work develops in an analogous way a corresponding dimensional fractal version where . Subsequently, the new fractal formalism is utilized to determine the measured ordinary energy density of the cosmos which turns out to be intimately linked to the new theory’s fractal dimension via non-integer irrational Lorentzian-like factor: where is Hardy’s probability of quantum entanglement. Consequently, the energy density is found from a limiting classical kinetic energy to be Here, is ‘tHooft’s renormalon of dimensional regularization. The immediate logical, mathematical and physical implication of this result is that the dark energy density of the cosmos must be in astounding agreement with cosmic measurements and observations. 展开更多
关键词 M-THEORY E-Infinity Theory Hardy’s Quantum Entanglement Transfinite Turing Computer Dark Energy Accelerated Cosmic Expansion Noncommutative Geometry superstring Theory Scale Relativity Cantorian-Fractal Spacetime Witten’s Theory ‘tHooft Renormalon Pure Gravity Penrose Tiling
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Empirical Relations about the Number of Dimensions in Theoretical Physics with the Concept of Common and Unshared Dimensions 被引量:1
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作者 Tomofumi Miyashita 《Journal of Modern Physics》 2010年第2期147-149,共3页
How many dimensions are there in the universe? Currently, there is confusion about the number of dimensions in the universe. Empirical relations about the number of dimensions in theoretical physics with the concept o... How many dimensions are there in the universe? Currently, there is confusion about the number of dimensions in the universe. Empirical relations about the number of dimensions in theoretical physics with the concept of common space- time 4 dimensions and unshared dimensions are described in this report. 展开更多
关键词 KALUZA-KLEIN superstring Super GRAVITY NAMBU STRING Unshared DIMENSIONS
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Negative Norms in Quantized Strings as Dark Energy Density of the Cosmos 被引量:1
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作者 Mohamed S. El Naschie 《World Journal of Condensed Matter Physics》 CAS 2016年第2期63-67,共5页
The present short paper is concerned with accurate explanation as well as quantification of the so called missing dark energy of the cosmos. It was always one of the main objectives of any successful general theory of... The present short paper is concerned with accurate explanation as well as quantification of the so called missing dark energy of the cosmos. It was always one of the main objectives of any successful general theory of high energy particle physics and quantum cosmology to keep non-physical negative norms, the so called ghosts completely out of that theory. The present work takes the completely contrary view by admitting these supposedly spurious states as part of the physical Hilbert space. It is further shown that rethinking the ghost free condition with the two critical spacetime dimensions D<sub>1</sub> = 26 and D<sub>2</sub> = 25 together with the corresponding intercept a<sub>1</sub> = 1 and a<sub>2</sub> ≤ 1 respectively and in addition imposing, as in Gross et al. heterotic superstrings, an overall 496 dimensional exceptional Lie symmetry group, then one will discover that there are two distinct types of energy. The first is positive norm ordinary energy connected to the zero set quantum particles which is very close to the measured ordinary energy density of the cosmos, namely E(O) = mc<sup>2</sup>/22. The second is negative norm (i.e. ghost) energy connected to the empty set quantum wave and is equal to the conjectured dark energy density of the cosmos E(D) = mc<sup>2</sup> (21/22) presumed to be behind the observed accelerated cosmic expansion. That way we were able to not only explain the physics of dark energy without adding any new concepts or novel additional ingredients but also we were able to compute the dark energy density accurately and in full agreement with measurements and observations. 展开更多
关键词 Negative Norms Quantum Ghosts Dark Energy Accelerated Cosmic Expansion superstringS Quantum Field Theory Cantorian-Fractal Spacetime Einstein Relativity Non-Fictional Spurions
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From Witten’s 462 Supercharges of 5-D Branes in Eleven Dimensions to the 95.5 Percent Cosmic Dark Energy Density behind the Accelerated Expansion of the Universe 被引量:1
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作者 Mohamed S. El Naschie 《Journal of Quantum Information Science》 2016年第2期57-61,共5页
The measured 95.5% dark energy density of the cosmos presumed to be behind the observed accelerated cosmic expansion is determined theoretically based upon Witten’s five branes in eleven dimensions theory. We show th... The measured 95.5% dark energy density of the cosmos presumed to be behind the observed accelerated cosmic expansion is determined theoretically based upon Witten’s five branes in eleven dimensions theory. We show that the said dark energy density is easily found from the ratio of the 462 states of the five dimensional Branes to the total number of states, namely 528 minus the 44 degrees of freedom of the vacuum, i.e. , almost exactly as found in WMAP and Type 1a supernova measurements. 展开更多
关键词 Number Theory Witten Branes Dark Energy superstrings Cosmic Expansion Type 1a Supernova E-INFINITY Exceptional Lie Symmetry Groups
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On a Quantum Gravity Fractal Spacetime Equation: QRG ≃HD + FG and Its Application to Dark Energy—Accelerated Cosmic Expansion 被引量:1
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作者 Mohamed S. El Naschie 《Journal of Modern Physics》 2016年第8期729-736,共8页
The paper suggests that quantum relativistic gravity (QRG) is basically a higher dimensionality (HD) simulating relativity and non-classical effects plus a fractal Cantorian spacetime geometry (FG) simulating quantum ... The paper suggests that quantum relativistic gravity (QRG) is basically a higher dimensionality (HD) simulating relativity and non-classical effects plus a fractal Cantorian spacetime geometry (FG) simulating quantum mechanics. This more than just a conceptual equation is illustrated by integer approximation and an exact solution of the dark energy density behind cosmic expansion. 展开更多
关键词 Fractal Cantorian Spacetime Quantum Relativity superstrings Transfinite Set Theory Extra Spacetime Dimensions Quantum Physics Dark Energy Accelerated Cosmic Expansion Cosmic Topology Hyperbolic Geometry E-Infinity Theory Post Modernistic Physics
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Extending Electromagnetic Treatment to Infectious Diseases including the Ebola Virus
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作者 Edgar E. Escultura 《Journal of Biomaterials and Nanobiotechnology》 2015年第2期100-115,共16页
A blueprint for research and development for design and development of suitable electromagnetic treatment of genetic diseases (Escultura, Journal of Biomaterials and Nanobiotechnology, 3(2), 2012) known as genetic ste... A blueprint for research and development for design and development of suitable electromagnetic treatment of genetic diseases (Escultura, Journal of Biomaterials and Nanobiotechnology, 3(2), 2012) known as genetic sterilization is applied to infectious diseases including viruses. It is based on the Grand Unified Theory (Escultura, Nonlinear Analysis, A-Series, 69(3), 2008) and the Unified Theory of Evolution (Escultura, The Journal of the Science of Healing Outcomes, 2015). Since every physical characteristic of living thing is determined by a gene, so is the undesirable symptom of a disease. For virus, its undesirable symptom is determined principally by the wavelength of the natural vibration of its gene as sequence of base materials which is equal to its measure as a segment of a double helix. Radiation with wavelength equal to this measure will resonate with it. Raising its intensity suitably will sterilize the gene, stop its spread and render it harmless to the host;then the disease is treated without harm to normal cells. Another treatment is establishing resonance with radiation of wavelength equal to the measure of the virus (protein strand with the gene) across;raising its intensity suitably will burn the virus without side effect (since it is much smaller than normal cells). 展开更多
关键词 Basic Primum Genetic Activation and STERILIZATION RESONANCE and SUPERPOSITION Law superstring
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Electromagnetic Treatment of Genetic Diseases
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作者 Edgar E. Escultura 《Journal of Biomaterials and Nanobiotechnology》 2012年第2期292-300,共9页
The paper offers an overview of quantum and macro gravity, two of the three pillars of the Grand Unified Theory (GUT), the other thermodynamics, developed in a series of papers since the solution of the gravitational ... The paper offers an overview of quantum and macro gravity, two of the three pillars of the Grand Unified Theory (GUT), the other thermodynamics, developed in a series of papers since the solution of the gravitational n-body problem in 1997 (J. Nonlinear Analysis, A-Series: Theory, Methods and Applications, Vol. 30, No. 8, 1997, pp. 5021 - 5032) and consolidated in the paper, The Grand Unified Theory (J. Nonlinear Analysis, A-Series: Theory: Method and Applications, Vol. 69, No. 3, 2008, pp. 823 - 831). GUT is further advanced by the paper, The Mathematics of GUT (J. Nonlinear Analysis, A-Series: Theory: Method and Applications, Vol. 71, 2009, pp. e420 - e431) and the discovery of more natural laws in the course of analyzing and explaining the disastrous final flight of the Columbia Space Shuttle in 2004 (J. Nonlinear Studies, Vol. 14, No. 3, 2007, pp. 241 - 260). Qualitative modeling was the key to the development of GUT and its theoretical and practical applications. The relevant natural laws of GUT that provide the foundations of the Unified Theory of Evolution are stated. GUT provides the basis for the development of the electromagnetic engine and the Unified Theory of Evolution, its theoretical application, for the development of appropriate technology for electromagnetic treatment of genetic diseases such as cancer, systemic lupos erythematosus, diabetes, muscular dystrophy and mental disorder, the central focus of this paper. 展开更多
关键词 Fractal GENE Chaos Primum superstring Turbulence BRAIN WAVE Composite GENE Dark Matter Electromagnetic WAVE Qualitative Modeling BRAIN WAVE SUPERPOSITION Genetic Alteration Encoding Modification STERILIZATION
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QED Cosmic Dark Energy Density Using Schwinger-Fredkin and E-Infinity Theory
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作者 Mohamed S. El Naschie 《Journal of Applied Mathematics and Physics》 2018年第4期621-627,共7页
The present paper utilizes the similarity between the non-perturbative Julian Schwinger-Efimov-Fredkin approach and that of E-infinity Cantorian spacetime theory to give an exact solution to the problem of cosmic dark... The present paper utilizes the similarity between the non-perturbative Julian Schwinger-Efimov-Fredkin approach and that of E-infinity Cantorian spacetime theory to give an exact solution to the problem of cosmic dark energy via a golden mean scaling-super quantization of the electromagnetic field. 展开更多
关键词 Schwinger-Fredkin Method Super Quantization P-ADIC Expansion Electromagnetic Field The Standard Model superstringS E-INFINITY Theory
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Is Human Activity Linked to Climate Change?
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作者 Edgar E. Escultura 《Atmospheric and Climate Sciences》 2014年第2期305-316,共12页
This paper establishes the link between human activity and climate change, e.g., more frequent and devastating typhoons, tornadoes, bushfires, droughts, floods and snowstorms and melting of the norther polar ice cap a... This paper establishes the link between human activity and climate change, e.g., more frequent and devastating typhoons, tornadoes, bushfires, droughts, floods and snowstorms and melting of the norther polar ice cap and recent occurrences of super typhoons and tornadoes. Qualitative mathematics and modeling(QMAM) explains this link and its remarkable verification based on the grand unified theory(GUT). 展开更多
关键词 Chaos CORIOLIS Effect Earthly Turbulence Coefficient of ELASTICITY Electromagnetic Wave GUT Technology Nested Generalized FRACTAL Northern PACIFIC Wind Cycle Primum superstring
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The Logic and Fundamental Concepts of the Grand Unified Theory
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作者 Edgar E. Escultura 《Journal of Modern Physics》 2013年第8期213-222,共10页
The grand unified theory (GUT) originated in mathematics with this question: why are there long standing unsolved problems in mathematics, e.g., Fermat’s conjecture (also known as Fermat’s last theorem (FLT))? The a... The grand unified theory (GUT) originated in mathematics with this question: why are there long standing unsolved problems in mathematics, e.g., Fermat’s conjecture (also known as Fermat’s last theorem (FLT))? The answer came quickly: its underlying fields—foundations and the real number system—are defective. In particular, formal logic is inapplicable to mathematics (language of science) and the real number system is inconsistent. Critique-rectification of these fields was undertaken leading to a new mathematical methodology and the consistent new real number system that provides the main mathematics of GUT. Similar question was posed in physics: why are there long standing problems, e.g., the gravitational n-body and turbulence problems? The answer: the present methodology, quantitative modeling is inadequate and the remedy is a new methodology—qualitative mathematics and modeling that solved these problems and provided the initial formulation of GUT. This paper presents the basic logic of GUT and its fundamental concepts, particularly, the superstring or fundamental building block of matter. 展开更多
关键词 Anti-Matter Big Bang Black Hole Chaos COSMIC BURST COSMOLOGICAL Body Electromagnetic Wave Generalized Physical Fractal Qualitative Modeling Quantum and Macro Gravity QUARK Primum superstring Turbulence
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Chaos, Turbulence and Fractal: Theory and Applications
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作者 Edgar E. Escultura 《International Journal of Modern Nonlinear Theory and Application》 2013年第3期176-185,共10页
The paper identifies chaos, turbulence and fractal of quantum and macro gravity and studies their behavior, properties and applications based on the grand unified theory (GUT) and qualitative mathematics and modeling.... The paper identifies chaos, turbulence and fractal of quantum and macro gravity and studies their behavior, properties and applications based on the grand unified theory (GUT) and qualitative mathematics and modeling. Applications include devising electromagnetic engines, tornado aborter and terminator and technologies for electromagnetic treatment of genetic diseases such as cancer, systemic lupos erythematosus, diabetes and mental disorder without harm to normal cell and side effect. Typhoon in the Western Pacific which is turbulence is impossible to terminate and impractical to deflect but prediction can be improved because it follows the Northern Pacific Wind Cycle (Southern Pacific Wind Cycle in the Southern Hemisphere) and is affected by the temperature variation over the Philippine Deep and around Mayon Volcano. The electromagnetic engine uses the clean, inexhaustible, free dark matter, specifically, the energy of magnetic flux, in place of conventional fuel, e.g., fossil, nuclear and geothermal. The tornado aborter and terminator utilize the gravitational flux of the Earth, its vortex flux of superstrings as a cosmological vortex which is turbulence. The technologies for electromagnetic treatment of genetic diseases utilize electromagnetic waves based on resonance. All of them are GUT technologies because they are applications of GUT. Except for the magnetic train which is in operation the rest is still at the conceptual and research and development (R&D) phase but the theory is complete and the strategy for R&D are laid down in detail in the cited original papers. 展开更多
关键词 CHAOS Cosmological Vortex Dark Matter ELECTROMAGNETIC Engine ELECTROMAGNETIC Treatment of Genetic Diseases FRACTAL Gravitational FLUX Magnetic FLUX Prima Quantum and Macro Gravity superstring Toroidal FLUX TURBULENCE
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NASA’s EM Drive Thrust from the Forces of the Quantum Vacuum of Spacetime
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作者 Mohamed S. El Naschie 《Advances in Aerospace Science and Technology》 2018年第1期1-9,共9页
Building on the various manifestations of the forces latent in the quantum vacuum of spacetime such as Hawking’s radiation and Unruh temperature, we resolve a major paradox connected to an immensely important proposa... Building on the various manifestations of the forces latent in the quantum vacuum of spacetime such as Hawking’s radiation and Unruh temperature, we resolve a major paradox connected to an immensely important proposal by NASA scientists for constructing a practically fuelless spacecraft. In a nutshell, preliminary laboratory work shows that NASA’s electromagnetic drive project is viable and several experiments and measurements show it is real. Yet the proposal violates a fundamental principle of classical mechanics, namely Newton’s third law. The resolution of this paradox is quite straight forward in principle. It is simply the case that although the proposal seems to be based on classical mechanics and classical thinking it is only superficially so. Deep at the roots, the EM drive proposal of NASA is not classical physics but rather based on the vacuum forces of quantum cosmology and the theory of dark energy density of the universe. In fact the proposal is deeply linked to Hawking’s radiation and Unruh temperature, which is explained in some detail in the main body of the present short paper within the frame work of E-infinity Cantorian spacetime theory and D. Gross’ Heterotic superstring theory. In short the quintessence of our explanation is to regard the EM drive as a quasi electromagnetic cavity with an effective event horizon akin to that of a Hawking black hole emitting radiation causing ultimately the needed thrust to push the spacecraft forwards. In addition and by invoking fractal spacetime self similarity we show that a spacecraft will be subject to another cosmic thrust on the large scale of the entire cosmos. 展开更多
关键词 EM DRIVE Interstellar Flight Vacuum ENERGY DARK ENERGY Cantorian SPACETIME Hartle-Hawking Wave Function of the Cosmos Cantorian Plasma Quantum Cosmology Casimir-Dark ENERGY Nano Reactor Heterotic superstringS Equations of Ordinary and DARK ENERGY Nonlinear Dynamics and Fractals Hawking Radiation Axion Unruh Temperature
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Copper Zinc Sulfur Compound Solar Cells Fabricated by Spray Pyrolysis Deposition for Solar Cells 被引量:1
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作者 Noriyuki Kitagawa Seigo Ito +1 位作者 Duy-Cuong Nguyen Hitoshi Nishino 《Natural Resources》 2013年第1期142-145,共4页
Cu-Zn-S (CZS) films were deposited by the spray pyrolysis method. As-deposited CZS film showed a low crystallinity. The resistivity of CZS film with Cu/(Cu+Zn) ratio of 50% is around 10-2Ω﹒cm. The CZS film elements ... Cu-Zn-S (CZS) films were deposited by the spray pyrolysis method. As-deposited CZS film showed a low crystallinity. The resistivity of CZS film with Cu/(Cu+Zn) ratio of 50% is around 10-2Ω﹒cm. The CZS film elements using spray Cu-Zn (=1:1) solution with thiourea was confirmed as? Cu:Zn:Sn=2:2:3 by ICP-MS and EDX. The band gap of CZS films was varied in the range of 1.8 - 3.5 ev when the? Cu/(Cu+Zn)ratio was increased from 0 to 67%;CZS film with Cu/(Cu+Zn)ratio of 50 % showed an wide band gap of 2 eV. The photovoltaic characteristics were confirmed with cell structure of . The best cell was observed at the CZS films with Cu/(Cu+Zn)ratio of 50%;these cells depicted a conversion efficiency of 1.7%. 展开更多
关键词 Cu2Zn2S3 SPRAY PYROLYSIS Solar Cells Superstrate Structure TiO2
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High Gain Patch Antenna for 2.4GHz using Metamaterial Superstrate
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作者 Kyu-Chang LEE Seung-In YANG 《Journal of Measurement Science and Instrumentation》 CAS 2010年第S1期19-22,共4页
A patch antenna and our proposed metamaterial patch antenna are simulated and compared. A high gain patch antenna using a single layer metamaterial superstrate with a near to zero refractive index(n)is proposed.The si... A patch antenna and our proposed metamaterial patch antenna are simulated and compared. A high gain patch antenna using a single layer metamaterial superstrate with a near to zero refractive index(n)is proposed.The simulation results provide that the gain of the proposed antenna is increased by about 7dB. Consequently,the high gain antenna can be easily obtained by using our metamaterial superstrate. 展开更多
关键词 PATCH ANTENNA METAMATERIAL Superstrate SINGLE Laye
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Interpenetrating structure for efficient Sb_(2)Se_(3) nanorod array solar cells loaded with CuInSe_(2) QDs sensitizer
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作者 Cong Liu Zhenxiao Pan +7 位作者 Kai Shen Jianzha Zheng Xiaoyang Liang Hongbing Zhu Fei Guo Zhiqiang Li Ruud E.I.Schropp Yaohua Mai 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第5期521-528,共8页
The strong anisotropic electrical properties of one-dimensional(1 D) nanostructure semiconductors,especially the anisotropic carrier transport, have a negative and significant influence on the performance of solar cel... The strong anisotropic electrical properties of one-dimensional(1 D) nanostructure semiconductors,especially the anisotropic carrier transport, have a negative and significant influence on the performance of solar cells if the nanostructures have random orientation. Considering the advantages of nanorod solar cells in carrier transport, we have achieved growth of vertically aligned Sb_(2)Se_(3) nanorod array with highly(hk1) orientation on Cd S substrate, and constructed superstrate nanorod solar cells for the first time. The Sb_(2)Se_(3) nanorod array solar cells exhibit the more efficient and long-range carrier transport in vertical direction. Furthermore, in order to suppress interface recombination, a CuInSe_(2) quantum dots(QDs) sensitizer has been applied to fill the volume between the nanorods completely, thus forming an interpenetrating nanocomposite structure. The CuInSe_(2) QDs can harvest additional light by absorption of visible light and contribute photocurrent. Meantime, the QDs function as a hole transport material and thus reduce the dependence of lateral transport. Consequently, the interpenetrating nanocomposite CuInSe_(2) / Sb_(2)Se_(3) solar cells display a power conversion efficiency of 7.54% with significant enhancements in the short-circuit current density and open-circuit voltage over pure Sb_(2)Se_(3) nanorod cells. This is the highest efficiency for superstrate solar cells based on Sb_(2)Se_(3) nanorod arrays. 展开更多
关键词 Superstrate solar cells Sb_(2)Se_(3)nanorod arrays Carrier transport Interpenetrating structure CuInSe_(2)QDs
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