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Absolute dielectronic recombination rate coefficients of highly charged ions at the storage ring CSRm and CSRe
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作者 黄忠魁 汪书兴 +18 位作者 汶伟强 汪寒冰 马万路 陈重阳 张春雨 陈冬阳 黄厚科 邵林 刘鑫 周晓鹏 冒立军 李杰 马晓明 汤梅堂 杨建成 原有进 张少锋 朱林繁 马新文 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第7期108-117,共10页
Dielectronic recombination(DR)is one of the dominant electron-ion recombination mechanisms for most highly charged ions(HCIs)in cosmic plasmas,and thus,it determines the charge state distribution and ionization balanc... Dielectronic recombination(DR)is one of the dominant electron-ion recombination mechanisms for most highly charged ions(HCIs)in cosmic plasmas,and thus,it determines the charge state distribution and ionization balance therein.To reliably interpret spectra from cosmic sources and model the astrophysical plasmas,precise DR rate coefficients are required to build up an accurate understanding of the ionization balance of the sources.The main cooler storage ring(CSRm)and the experimental cooler storage ring(CSRe)at the Heavy-Ion Research Facility in Lanzhou(HIRFL)are both equipped with electron cooling devices,which provide an excellent experimental platform for electron-ion collision studies for HCIs.Here,the status of the DR experiments at the HIRFL-CSR is outlined,and the DR measurements with Na-like Kr25^(+)ions at the CSRm and CSRe are taken as examples.In addition,the plasma recombination rate coefficients for Ar12^(+),14^(+),Ca14^(+),16^(+),17^(+),Ni19^(+),and Kr25^(+)ions obtained at the HIRFL-CSR are provided.All the data presented in this paper are openly available at https://doi.org/10.57760/sciencedb.j00113.00092. 展开更多
关键词 dielectronic recombination storage ring highly charged ion electron cooling precision spectroscopy
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Benchmarking calculations of excitation energies and transition properties with spectroscopic accuracy of highly charged ions used for the fusion plasma and astrophysical plasma
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作者 张春雨 王凯 +5 位作者 司然 李金晴 宋昌仙 吴思捷 严碧霜 陈重阳 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第11期179-193,共15页
Atomic radiative data such as excitation energies, transition wavelengths, radiative rates, and level lifetimes with high precision are the essential parameters for the abundance analysis, simulation, and diagnostics ... Atomic radiative data such as excitation energies, transition wavelengths, radiative rates, and level lifetimes with high precision are the essential parameters for the abundance analysis, simulation, and diagnostics in fusion and astrophysical plasmas. In this work, we mainly focus on reviewing our two projects performed in the past decade. One is about the ions with Z■30 that are generally of astrophysical interest, and the other one is about the highly charged krypton(Z = 36)and tungsten(Z = 74) ions that are relevant in research of magnetic confinement fusion. Two different and independent methods, namely, multiconfiguration Dirac–Hartree–Fock(MCDHF) and the relativistic many-body perturbation theory(RMBPT) are usually used in our studies. As a complement/extension to our previous works for highly charged tungsten ions with open M-shell and open N-shell, we also mainly focus on presenting and discussing our complete RMBPT and MCDHF calculations for the excitation energies, wavelengths, electric dipole(E1), magnetic dipole(M1), electric quadrupole(E2), and magnetic quadrupole(M2) transition properties, and level lifetimes for the lowest 148 levels belonging to the 3l3configurations in Al-like W61+. We also summarize the uncertainties of our systematical theoretical calculations, by cross-checking/validating our datasets from our RMBPT and MCDHF calculations, and by detailed comparisons with available accurate observations and other theoretical calculations. The data are openly available in Science Data Bank at https://doi.org/10.57760/sciencedb.10569. 展开更多
关键词 energy levels transition rates highly charged ions relativistic many-body perturbation theory(RMBPT) multi-configuration Dirac-Hartree-Fock(MCDHF) benchmarking calculations exci-tation energies spectroscopic accuracy
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Atomic structure and collision dynamics with highly charged ions 被引量:1
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作者 Xinwen Ma Shaofeng Zhang +11 位作者 Weiqiang Wen Zhongkui Huang Zhimin Hu Dalong Guo Junwen Gao Bennaceur Najjari Shenyue Xu Shuncheng Yan Ke Yao Ruitian Zhang Yong Gao Xiaolong Zhu 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第9期13-40,共28页
The research progresses on the investigations of atomic structure and collision dynamics with highly charged ions based on the heavy ion storage rings and electron ion beam traps in recent 20 years are reviewed.The st... The research progresses on the investigations of atomic structure and collision dynamics with highly charged ions based on the heavy ion storage rings and electron ion beam traps in recent 20 years are reviewed.The structure part covers test of quantum electrodynamics and electron correlation in strong Coulomb field studied through dielectronic recombi-nation spectroscopy and VUV/x-ray spectroscopy.The collision dynamics part includes charge exchange dynamics in ion-atom collisions mainly in Bohr velocity region,ion-induced fragmentation mechanisms of molecules,hydrogen-bound and van de Waals bound clusters,interference,and phase information observed in ion-atom/molecule collisions.With this achievements,two aspects of theoretical studies related to low energy and relativistic energy collisions are presented.The applications of data relevant to key atomic processes like dielectronic recombination and charge exchanges involving highly charged ions are discussed.At the end of this review,some future prospects of research related to highly charged ions are proposed. 展开更多
关键词 highly charged ion atomic structure collision dynamics quantum electrodynamics fragmentation mechanisms relativistic effects electron correlation
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Temporal and spatial study of differently charged ions emitted by ns-laser-produced tungsten plasmas using time-of-flight mass spectroscopy
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作者 Ding WU George C-Y CHAN +4 位作者 Xianglei MAO Yu LI Richard E RUSSO Hongbin DING Vassilia ZORBA 《Plasma Science and Technology》 SCIE EI CAS CSCD 2021年第9期176-183,共8页
Tungsten(W)is an important material in tokamak walls and divertors.The W ion charge state distribution and the dynamic behavior of ions play important roles in the investigation of plasma–wall interactions using lase... Tungsten(W)is an important material in tokamak walls and divertors.The W ion charge state distribution and the dynamic behavior of ions play important roles in the investigation of plasma–wall interactions using laser-ablation-based diagnostics such as laser-induced breakdown spectroscopy and laser-induced ablation spectroscopy.In this work,we investigate the temporal and spatial evolutions of differently charged ions in a nanosecond-laser-produced W plasma in vacuum using time-of-flight mass spectroscopy.Ions with different charge states from 1 to 7(W+to W7+)are all observed.The temporal evolutions of the differently charged ions show that ions with higher charge states have higher velocities,indicating that space separation occurs between the differently charged ion groups.Spatially-resolved mass spectroscopy measurements further demonstrate the separation phenomenon.The temporal profile can be accurately fitted by a shifted Maxwell–Boltzmann distribution,and the velocities of the differently charged ions are also obtained from the fittings.It is found that the ion velocities increase continuously from the measured position of 0.75 cm to 2.25 cm away from the target surface,which indicates that the acceleration process lasts through the period of plasma expansion.The acceleration and space separation of the differently charged ions confirm that there is a dynamic plasma sheath in the laser-produced plasma,which provides essential information for the theoretical laser-ablation model with plasma formation and expansion. 展开更多
关键词 laser ablation temporal and spatial evolution time-of-flight mass spectroscopy spatial separation differently charged ions
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A STUDY OF DOUBLY CHARGED ION MASS SPECTRA(2E SPECTRA) OF BIPHENYL DERIVATIVES
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作者 Feng He QIU Shu Ying LIU 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第5期397-398,共2页
The 2E spectra and substituent effects and target gas pressure dependence of the 2E spectra of 7 biphenyl derivatives were discussed. The electron-donating groups favour the molecular ions, but the electron withdrawin... The 2E spectra and substituent effects and target gas pressure dependence of the 2E spectra of 7 biphenyl derivatives were discussed. The electron-donating groups favour the molecular ions, but the electron withdrawing groups favour the fragaent ions produced by losing the substituents from molecular ions. The variation of target gas pressure affects the TIC,sample ion current,and the ratio of sample ion current to TIC sharply.However it has no effect on the fragmentation pattern. 展开更多
关键词 ion A STUDY OF DOUBLY charged ion MASS SPECTRA OF BIPHENYL DERIVATIVES SPECTRA
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Modified Classical Over Barrier Model for Multi-Charged Ion in Collisions with Multiple Electron Target at Energies Below 1 keV/u
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作者 K.ISHII K.OKUNO 《Plasma Science and Technology》 SCIE EI CAS CSCD 2010年第3期369-371,共3页
Charge transfer cross sections for Kr^q+ with Ne are calculated quantitatively by using modified classical over barrier model in order to clarify energy dependence of charge transfer cross sections in low energy regi... Charge transfer cross sections for Kr^q+ with Ne are calculated quantitatively by using modified classical over barrier model in order to clarify energy dependence of charge transfer cross sections in low energy region. Essential of this model is taking the induced dipole potential into consideration. As a result, this calculation can reproduce systematic energy dependence of experimental results. This suggests that the bending trajectory of the projectile due to an induced dipole potential should be considered to describe pictures of collisions at low energy regime below 1 keV/u. 展开更多
关键词 atomic processes highly charged ion charge transfer classical over barrier
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Peripheral collisions of highly charged ions with metal clusters
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作者 张成俊 胡碧涛 罗先文 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第5期190-198,共9页
Within the framework of the dynamical classical over-barrier model,the soft collisions between slow highly charged ions(SHCIs) Ar 17+ and the large copper clusters under large impact parameters have been studied in... Within the framework of the dynamical classical over-barrier model,the soft collisions between slow highly charged ions(SHCIs) Ar 17+ and the large copper clusters under large impact parameters have been studied in this paper.We present the dominant mechanism of the electron transfer between SHCIs and a large metal cluster by computational simulation.The evolution of the occupation of projectile ions,KL x satellite lines,X-ray yields,Auger electron spectrum and scattering angles are provided. 展开更多
关键词 highly charged ion metal cluster COLLISion
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State-selective charge exchange cross sections in collisions of highly-charged sulfur ions with helium and molecular hydrogen
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作者 朱小龙 崔述成 +9 位作者 邢大地 徐佳伟 B.Najjari 赵冬梅 郭大龙 高永 张瑞田 苏茂根 张少锋 马新文 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第2期29-33,共5页
The state-selective cross section data are useful for understanding and modeling the x-ray emission in celestial observations.In the present work,using the cold target recoil ion momentum spectroscopy,for the first ti... The state-selective cross section data are useful for understanding and modeling the x-ray emission in celestial observations.In the present work,using the cold target recoil ion momentum spectroscopy,for the first time we investigated the state-selective single electron capture processes for S^(q+)–He and H_(2)(q=11–15)collision systems at an impact energy of q×20 keV and obtained the relative state-selective cross sections.The results indicate that only a few principal quantum states of the projectile energy level are populated in a single electron capture process.In particular,the increase of the projectile charge state leads to the population of the states with higher principal quantum numbers.It is also shown that the experimental averaged n-shell populations are reproduced well by the over-barrier model.The database is openly available in Science Data Bank at 10.57760/sciencedb.j00113.00091. 展开更多
关键词 highly charged sulfur ion charge exchange state-selective cross sections COLTRIMS
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Theoretical study of electron-impact broadening for highly charged Ar XV ion lines
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作者 吴超 高翔 +7 位作者 朱宇豪 韩小英 段斌 孟举 张松斌 颜君 吴勇 王建国 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第5期49-56,共8页
Spectral line widths produced by collisions between charged particles and emitters are of special interest for precise plasma spectroscopy.The highly charged Ar XV ion is demonstrated to have strong intrashell electro... Spectral line widths produced by collisions between charged particles and emitters are of special interest for precise plasma spectroscopy.The highly charged Ar XV ion is demonstrated to have strong intrashell electron interactions,which manifest as an atomic system with many resonance structures,due to the quasi-degeneracy of orbital energies.In this paper we use the relativistic R-matrix method to investigate the electron-impact broadening of highly charged Ar XV ion spectral lines under the impact approximation.It is found that the results considering resonance structures are significantly different from those of the distorted wave approach.Furthermore,we propose a new empirical formula with a correction term to take into account the effect of resonances for electron-impact widths over a relatively wide range of plasma conditions.The corresponding fitting parameters of the new empirical formula for all 47 calculated transitions are also given with an estimated accuracy within 1%,which should be convenient for practical applications.The dataset that supported the findings of this study is available in Science Data Bank,with the link https://doi.org/10.57760/sciencedb.j00113.00101. 展开更多
关键词 highly charged ions electron-impact broadening empirical formula
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Ionization and single electron capture in collision of highly charged Ar^(16+) ions with helium
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作者 王菲 芶秉聪 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第4期1227-1230,共4页
This paper uses the two-centre atomic orbital close-coupling method to study the ionization and the single electron capture in collision of highly charged Ar^16+ ions with He atoms in the velocity range of 1.2-1.9 a.... This paper uses the two-centre atomic orbital close-coupling method to study the ionization and the single electron capture in collision of highly charged Ar^16+ ions with He atoms in the velocity range of 1.2-1.9 a.u.. The relative importance of single ionization (SI) to single capture (SC) is explored. The comparison between the calculation and experimental data shows that the SI/SC cross section ratios from this work are in good agreement with experimental data. The total single electron ionization cross sections and the total single electron capture cross sections are also given for this collision. The investigation of the partial electron capture cross section shows a general tendency of capture to larger n and l with increasing velocity from 1.2 to 1.9 a.u.. 展开更多
关键词 close-coupling method electron capture highly charged ions
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Measurements of absolute electron capture cross sections in He^(2+)–He and Ne^(8+)–O_(2'), N_(2'), CH_4 collisions
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作者 Pu-Fang Ma Jia-Rong Wang +9 位作者 Zi-Xiao Zhang Tian-Ming Meng Zi-Han Xia Bai-Hui Ren Long Wei Ke Yao Jun Xiao Ya-Ming Zou Bing-Sheng Tu Bao-Ren Wei 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2023年第10期126-135,共10页
The total absolute cross sections of single-and double-electron capture (SEC and DEC) in the collisions of He^(2+)with He and Ne^(8+)with O_(2),N_(2),and CH_(4) were studied in the energy ranges 3.5–50 keV/u and 2.8... The total absolute cross sections of single-and double-electron capture (SEC and DEC) in the collisions of He^(2+)with He and Ne^(8+)with O_(2),N_(2),and CH_(4) were studied in the energy ranges 3.5–50 keV/u and 2.8–40 keV/u,respectively.Through a deep analysis of the experimental systematic uncertainties in the measurement procedure and data evaluation,the error in the experimental results of the SEC cross sections is less than 9%.Within the uncertainties,the present results of the He^(2+)–He collision show good consistency with previous measurements,validating the experimental system and paving the way for precise measurements of EC cross sections for a variety of ions and neutral gases.The present measurements allow for a test of EC theory and provide crucial EC cross section data for the establishment of plasma models in fusion research and astrophysical X-ray studies. 展开更多
关键词 Highly charged ions Cross section Electron capture Charge exchange
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Unified Hydrodynamics and Pseudorapidity Distributions of Charged Particles Produced in Heavy Ion Collisions at Low Energies at RHIC
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作者 姜志进 惠加琪 邓海平 《Chinese Physics Letters》 SCIE CAS CSCD 2017年第5期36-39,共4页
In the context of unified hydrodynamics, we discuss the pseudorapidity distributions of the charged particles produced in Au-Au and Cu-Cu collisions at the low RHIC energies of √SNN = 19.6 and 22.4 GeV, respectively.... In the context of unified hydrodynamics, we discuss the pseudorapidity distributions of the charged particles produced in Au-Au and Cu-Cu collisions at the low RHIC energies of √SNN = 19.6 and 22.4 GeV, respectively. It is found that the unified hydrodynamics alone can give a good description to the experimental measurements. This is different from the collisions at the maximum RHIC energy of √SNN = 200 GeV or at LHC energy of √SNN= 2.76 TeV, in which the leading particles must be taken into account so that we can properly explain the experimental observations. 展开更多
关键词 Unified Hydrodynamics and Pseudorapidity Distributions of charged Particles Produced in Heavy ion Collisions at Low Energies at RHIC SNN LHC
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Correlation between surface charge and hydration on mineral surfaces in aqueous solutions: A critical review 被引量:3
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作者 Hong-liang Li Wen-nan Xu +3 位作者 Fei-fei Jia Jian-bo Li Shao-xian Song Yuri Nahmad 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2020年第7期857-871,共15页
Surface charges and hydration are predominant properties of colloidal particles that govern colloidal stability in aqueous suspensions.These properties usually coexist and interact with each other.The correlation betw... Surface charges and hydration are predominant properties of colloidal particles that govern colloidal stability in aqueous suspensions.These properties usually coexist and interact with each other.The correlation between the surface charge and hydration of minerals is summarized on the basis of innovative experimental,theoretical,and molecular dynamics simulation studies.The factors affecting the adsorption behavior of ions and water molecules,such as ion concentration,ion hydration radius and valence,and surface properties,are discussed.For example,the hydration and adsorption states completely differ between monovalent and divalent ions.For ions of the same valence,the effect of surface charge on the hydration force follows the Hofmeister adsorption series.Electrolyte concentration exerts a significant effect on the hydration force at high ion concentrations.Meanwhile,the ion correlations in high-concentration electrolyte systems become long range.The interfacial water structure largely depends on surface chemistry.The hydration layer between different surfaces shows large qualitative differences. 展开更多
关键词 surface hydration surface charged ion MINERAL water molecule
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Charge state effect on the K-shell ionization of iron by xenon ions near the Bohr velocity
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作者 周贤明 赵永涛 +7 位作者 任洁茹 程锐 雷瑜 孙渊博 徐戈 王瑜玉 刘世东 肖国青 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第11期282-286,共5页
Fe K-shell ionization cross sections induced by 2.4-6.0 MeV Xe^20+ are measured and compared with different binary- encounter-approximation (BEA) models. The results indicate that the BEA model corrected both by th... Fe K-shell ionization cross sections induced by 2.4-6.0 MeV Xe^20+ are measured and compared with different binary- encounter-approximation (BEA) models. The results indicate that the BEA model corrected both by the Coulomb repulsion and by the effective nuclear charge (Zeff) agrees well with the experimental data. Comparison of Fe K-shell X-ray emission induced by 5 MeV xenon ions with different initial charge states (20+, 22+, 26+, 30+) verifies the applicability of the effective nuclear charge (Zeff) correction for the BEA model. It is found that Zeff correction is reasonable to describe direct ionization induced by xenon ions with no initial M-shell vacancies. However, when the M shell is opened, the Zeff corrected BEA model is unable to explain the inner-shell ionization, and the electron transfer by molecular-orbital promotion should be considered. 展开更多
关键词 highly charged ions charge state effect inner-shell ionization X-ray emission
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Recoil Momentum of Target Ions in Collisions of Ar^(6+)+CO_2 at Energies Below 300 eV/u
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作者 Y.INOUE K.ISHII H.OGAWA 《Plasma Science and Technology》 SCIE EI CAS CSCD 2010年第3期361-363,共3页
The collision dynamics and fragmentation process of molecule by highly charged ion impact for single electron capture processes at the low energies below 1 keV/u were studied. The collision energy dependence of the re... The collision dynamics and fragmentation process of molecule by highly charged ion impact for single electron capture processes at the low energies below 1 keV/u were studied. The collision energy dependence of the recoil momentum was obtained experimentally and compared it with those calculated by a theoretical model using a deflection function with polarization potential. A fairly good agreement between the measured and calculated results was reached. This suggests that the polarization potential plays a crucial role in the low-energy region. 展开更多
关键词 atomic process highly charged ion charge transfer classical over barrier model molecular fragmentation
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Evidence of potential change in nonsequential double ionization
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作者 Changchun Jia Pu Zhang +1 位作者 Hua Wen Zhangjin Chen 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第2期262-267,共6页
Recently,the quantitative rescattering model(QRS)for nonsequential double ionization(NSDI)is modified by taking into account the potential change(PC)due to the presence of electric field at the time of recollision.Usi... Recently,the quantitative rescattering model(QRS)for nonsequential double ionization(NSDI)is modified by taking into account the potential change(PC)due to the presence of electric field at the time of recollision.Using the improved QRS model,we simulate the longitudinal momentum distributions of doubly charged ions He2+by projecting the correlated two-electron momentum distributions for NSDI of He onto the main diagonal.The obtained results are compared directly with the experimental data at different intensities.It is found that when the PC is considered,the width of momentum distributions reduces and the agreement between theory and experiment is improved. 展开更多
关键词 nonsequential double ionization quantitative rescattering model potential change momentum distribution of doubly charged ion
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Neutralization process of Xe^q+ ion grazing on Al(111) surface
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作者 胡碧涛 张宏俊 +4 位作者 张健 宋玉收 王丽丽 陈春花 顾建刚 《Chinese Physics B》 SCIE EI CAS CSCD 2007年第10期2918-2923,共6页
A code has been developed to simulate the neutralization and grazing process of slow highly charged ion Xe^q+ on Al(111) surface under the classical-over-the-barrier model. The image energy gain of Xeq+ ions are c... A code has been developed to simulate the neutralization and grazing process of slow highly charged ion Xe^q+ on Al(111) surface under the classical-over-the-barrier model. The image energy gain of Xeq+ ions are calculated and compared with experiment data. The simulation results of image energy gain are in good agreement with the experiment data. Meanwhile, in the present work, the reflection coefficient of incident Xe^q+ on Al(111) surface as a function of the incidence angle, energy and charge state is also studied. 展开更多
关键词 slow highly charged ion hollow atom grazing incidence
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Fully Differential Cross Sections for Single Ionization of Helium by AuQ+ Impact
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作者 Li-li Feng Shi-yan Sun +1 位作者 Qiao-qiao Duan Xiang-fu Jia 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2015年第5期-,共4页
关键词 Highly charged ions Fully differential cross section Three-body distorted wave
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Ion stopping in dense plasmas: A basic physics approach 被引量:4
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作者 Claude Deutsch Gilles Maynard 《Matter and Radiation at Extremes》 SCIE EI CAS 2016年第6期277-307,共31页
We survey quite extensively the present research status of ion-stopping in dense plasmas of potential importance for initial confinement fusion(ICF)drivenby intense and heavy ion beams,and alsofor warm dense matter(WD... We survey quite extensively the present research status of ion-stopping in dense plasmas of potential importance for initial confinement fusion(ICF)drivenby intense and heavy ion beams,and alsofor warm dense matter(WDM).First,we putemphasis on every possible mechanism involved in the shaping of the ion projectile effective charge,while losing energy in a target plasma with classical ions and partially degenerate electrons.Then,we switch to ion stopping by target bound electrons,taking detailed account of mean excitation energies.Free electron stopping has already been given a lot of attention in former works[C.Deutsch et al.,Recent Res.Devel.Plasma 1(2000)1-23;Open Plasma Phys.J.3(2010)88-115].Then,we extend the usual standard stopping model(SSM)framework to nonlinear stopping including a treatment of the Z 3 Barkas effect and a confronting comparison of Bloch and Bohr Coulomb logarithms.Finally,we document low velocity ion slowing down(LVISD)in single ion plasmas as well as in binary ionic mixtures(BIM),in connection with specific ICF fuels. 展开更多
关键词 ion projectile effective charge Mean excited energies Nonlinear stopping Binary ionic mixture
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Electronic mobility in the high-carrier-density limit of ion gel gated IDTBT thin film transistors 被引量:1
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作者 包蓓 邵宪一 +9 位作者 谭璐 王文河 吴越珅 文理斌 赵家庆 唐伟 张为民 郭小军 王顺 刘荧 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第9期20-24,共5页
Indacenodithiophene-co-benzothiadiazole(IDTBT) has emerged as one of the most exciting semiconducting polymers in recent years because of its high electronic mobility and charge transport along the polymer backbone.... Indacenodithiophene-co-benzothiadiazole(IDTBT) has emerged as one of the most exciting semiconducting polymers in recent years because of its high electronic mobility and charge transport along the polymer backbone. By using the recently developed ion gel gating technique we studied the charge transport of IDTBT at carrier densities up to 10^21cm^-3.While the conductivity in IDTBT was found to be enhanced by nearly six orders of magnitude by ionic gating, the charge transport in IDTBT was found to remain 3D Mott variable range hopping even down to the lowest temperature of our measurements, 12 K. The maximum mobility was found to be around 0.2 cm^2·V^-1·s^-1, lower than that of Cytop gated field effect transistors reported previously. We attribute the lower mobility to the additional disorder induced by the ionic gating. 展开更多
关键词 semiconducting polymer ion gel gating charge transport variable range hopping
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