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Achieving Synergistic Improvement in Dielectric and Energy Storage Properties of All-Organic Poly(Methyl Methacrylate)-Based Copolymers Via Establishing Charge Traps
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作者 Guanghu He Huang Luo +5 位作者 Chuanfang Yan Yuting Wan Dang Wu Hang Luo Yuan Liu Sheng Chen 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第2期308-319,共12页
How to achieve synergistic improvement of permittivity(ε_(r))and breakdown strength(E_(b))is a huge challenge for polymer dielectrics.Here,for the first time,theπ-conjugated comonomer(MHT)can simultaneously promote ... How to achieve synergistic improvement of permittivity(ε_(r))and breakdown strength(E_(b))is a huge challenge for polymer dielectrics.Here,for the first time,theπ-conjugated comonomer(MHT)can simultaneously promote theε_(r)and E_(b)of linear poly(methyl methacrylate)(PMMA)copolymers.The PMMA-based random copolymer films(P(MMA-co-MHT)),block copolymer films(PMMA-b-PMHT),and PMMA-based blend films were prepared to investigate the effects of sequential structure,phase separation structure,and modification method on dielectric and energy storage properties of PMMA-based dielectric films.As a result,the random copolymer P(MMA-coMHT)can achieve a maximumε_(r)of 5.8 at 1 kHz owing to the enhanced orientation polarization and electron polarization.Because electron injection and charge transfer are limited by the strong electrostatic attraction ofπ-conjugated benzophenanthrene group analyzed by the density functional theory(DFT),the discharge energy density value of P(MMA-co-PMHT)containing 1 mol%MHT units with the efficiency of 80%reaches15.00 J cm^(-3)at 872 MV m^(-1),which is 165%higher than that of pure PMMA.This study provides a simple and effective way to fabricate the high performance of polymer dielectrics via copolymerization with the monomer of P-type semi-conductive polymer. 展开更多
关键词 dielectric capacitor electrical properties energy density polymer dielectric semiconductor polymer
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Regioisomeric Polymer Semiconductors Based on Cyano-Functionalized Dialkoxybithiophenes:Structure-Property Relationship and Photovoltaic Performance 被引量:2
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作者 Qingqing Bai Jun Huang +8 位作者 Han Guo Suxiang Ma Jie Yang Bin Liu Kun Yang Huiliang Sun Han Young Woo Li Niu Xugang Guo 《Transactions of Tianjin University》 EI CAS 2022年第5期385-397,共13页
Cyano substitution is vital to the molecular design of polymer semiconductors toward highly efficient organic solar cells.However,how regioselectivity impacts relevant optoelectronic properties in cyano-substituted bi... Cyano substitution is vital to the molecular design of polymer semiconductors toward highly efficient organic solar cells.However,how regioselectivity impacts relevant optoelectronic properties in cyano-substituted bithiophene systems remain poorly understood.Three regioisomeric cyano-functionalized dialkoxybithiophenes BT_(HH),BT_(HT),and BT_(TT) with headto-head,head-to-tail,and tail-to-tail linkage,respectively,were synthesized and characterized in this work.The resulting polymer semiconductors(PBDTBTs)based on these building blocks were prepared accordingly.The regiochemistry and property relationships of PBDTBTs were investigated in detail.The BTHH moiety has a higher torsional barrier than the analogs BT_(HT) and BT_(TT),and the regiochemistry of dialkoxybithiophenes leads to fine modulation in the optoelectronic properties of these polymers,such as optical absorption,band gap,and energy levels of frontier molecular orbitals.Organic field-effect transistors based on PBDTBT_(HH) had higher hole mobility(4.4×10^(-3) cm^(2)/(V·s))than those(ca.10^(-4) cm^(2)/(V·s))of the other two polymer analogs.Significantly different short-circuit current densities and fill factors were obtained in polymer solar cells using PBDTBTs as the electron donors.Such difference was probed in greater detail by performing space-charge-limited current mobility,thin-film morphology,and transient photocurrent/photovoltage characterizations.The findings highlight that the BTHH unit is a promising building block for the construction of polymer donors for highperformance organic photovoltaic cells. 展开更多
关键词 Cyano substitution Regioselectivity Organic photovoltaic cells Polymer semiconductors MOBILITY
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Intrinsically stretchable polymer semiconductor based electronic skin for multiple perceptions of force,temperature,and visible light 被引量:6
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作者 Dongjuan Liu Pengcheng Zhu +7 位作者 Fukang Zhang Peishuo Li Wenhao Huang Chang Li Ningning Han Shuairong Mu Hao Zhou Yanchao Mao 《Nano Research》 SCIE EI CSCD 2023年第1期1196-1204,共9页
As a stretchable seamless device,electronic skin(E-skin)has drawn enormous interest due to its skin-like sensing capability.Besides the basic perception of force and temperature,multiple perception that is beyond exis... As a stretchable seamless device,electronic skin(E-skin)has drawn enormous interest due to its skin-like sensing capability.Besides the basic perception of force and temperature,multiple perception that is beyond existing functions of human skin is becoming an important direction for E-skin developments.However,the present E-skins for multiple perceptions mainly rely on different sensing materials and heterogeneous integration,resulting in a complex device structure.Additionally,their stretchability is usually achieved by the complicated microstructure design of rigid materials.Here,we report an intrinsically stretchable polymer semiconductor based E-skin with a simple structure for multiple perceptions of force,temperature,and visible light.The E-skin is on the basis of poly(3-hexylthiophene)(P3HT)nanofibers percolated polydimethylsiloxane(PDMS)composite polymer semiconductor,which is fabricated by a facile solution method.The E-skin shows reliable sensing capabilities when it is used to perceive strain,pressure,temperature,and visible light.Based on the E-skin,an intelligent robotic hand sensing and controlling system is further demonstrated.Compared with conventional E-skins for multiple perceptions,this E-skin only has a simple monolayer sensing membrane without the need of combining different sensing materials,heterogeneous integration,and complicated microstructure design.Such a strategy of utilizing intrinsically stretchable polymer semiconductor to create simple structured E-skin for multiple perceptions will promote the development of E-skins in a broad application scenario,such as artificial robotic skins,virtual reality,intelligent gloves,and biointegrated electronics. 展开更多
关键词 electronic skin stretchable polymer semiconductor multiple perception visible light artificial robotic skin
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Solvent-vapour treatment induced performance enhancement of amplified spontaneous emission based on poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene]
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作者 张波 侯延冰 +4 位作者 滕枫 娄志东 刘小君 胡兵 武文彬 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第5期285-288,共4页
In this work, performance enhancements of amplified spontaneous emission (ASE) from poly[2-methoxy-5-(2'- ethyl-hexyloxy)-l,4-phenylene vinylene] (MEH-PPV) have been achieved via solvent vapour treatment. Corre... In this work, performance enhancements of amplified spontaneous emission (ASE) from poly[2-methoxy-5-(2'- ethyl-hexyloxy)-l,4-phenylene vinylene] (MEH-PPV) have been achieved via solvent vapour treatment. Correlations between the morphology of the film and the optical performance of polymer-based ASE are investigated. The active layers are characterised by atomic force microscopy and optical absorption. The results show that the solvent-vapour treatment can induce the MEH-PPV self-organisation into an ordered structure with a smooth surface, leading to enhanced optical gain. Thus the solvent-vapour treatment is a good method for improving the optical properties of the MEH-PPV. 展开更多
关键词 polymer semiconductor amplified spontaneous emission solvent-vapour treatment
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Amplified spontaneous emission from metal-backed poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene] film
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作者 张波 侯延冰 +4 位作者 滕枫 娄志东 刘小君 胡兵 武文彬 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第7期9-12,共4页
We investigate the amplified spontaneous emission (ASE) from an Ag-backed poly[2-methoxy-5-(2'-ethylhexyloxy)- 1,4-phenylenevinylene] (MEH-PPV) film with different film thicknesses. The ASE characteristics of A... We investigate the amplified spontaneous emission (ASE) from an Ag-backed poly[2-methoxy-5-(2'-ethylhexyloxy)- 1,4-phenylenevinylene] (MEH-PPV) film with different film thicknesses. The ASE characteristics of Ag-backed MEH- PPV films with different thicknesses show that increasing the film thickness can reduce the influence of the Ag cladding. The threshold, the gain, and the loss of the device with a thickness of 170 nm are comparable to those of a metal-free device. The lasing threshold of this device is about 7.5 times that of a metal-free device. Our findings demonstrate that Ag-backed MEH-PPV film with an appropriate thickness can still be a good polymer gain material for the fabrication of solid-state lasers. 展开更多
关键词 polymer semiconductor amplified spontaneous emission metal-backed film
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Effect of different metal-backed waveguides on amplified spontaneous emission
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作者 张波 侯延冰 +5 位作者 娄志东 滕枫 刘小君 胡兵 孟令川 武文彬 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第8期284-288,共5页
We investigate the effect of a metallic electrode on the ability for poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4- phenylene vinylene] (MEH-PPV) film to undergo amplified spontaneous emission (ASE). The threshold of... We investigate the effect of a metallic electrode on the ability for poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4- phenylene vinylene] (MEH-PPV) film to undergo amplified spontaneous emission (ASE). The threshold of the device with Ag cladding is about 10 times greater than that of a metal-free device, but metal such as Al completely shuts off ASE. The ASE recurs when a thin spacer layer, such as a few nanometers of SiO2, is introduced between the MEH-PPV film and the Al cladding. Compared with the Cu or Al electrode, the Ag cladding is most suited to serve as an electrode with its low optical loss due to its high work-function and reflectivity. 展开更多
关键词 polymer semiconductor amplified spontaneous emission ELECTRODE
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Photoswitchable semiconducting polymer dots with photosensitizer molecule and photochromic molecule loading for photodynamic cancer therapy
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作者 Lu Guo Bo Xu +1 位作者 Haobin Chen Ying Tang 《Journal of Innovative Optical Health Sciences》 SCIE EI CAS 2022年第6期17-29,共13页
Photodynamic therapy(PDT)is a new and rapidly developing treatment modality for dinical cancer therapy.Semiconductor polymer dots(Pdots)doped with photosensitizers have been successfully applied to PDT,and have made p... Photodynamic therapy(PDT)is a new and rapidly developing treatment modality for dinical cancer therapy.Semiconductor polymer dots(Pdots)doped with photosensitizers have been successfully applied to PDT,and have made progress in the field of tumor therapy.However,the problems of severe photosensitivity and limited tisue penetration depth are needed to be solved during the implementation process of PDT.Here we developed the Pdots doped with photosensitizer molecule Chlorin e6(Ce6)and photochromic molecule 1,2-bis(2,4-dimethy1-5 phenyl-3-thiophene)-3,3,4,5-hexafuoro-1-cyclopentene(BTE)to construct a photoswitchable nanoplatform for PDT.The Ce6-BTE-doped Pdots were in the green region,and the tissue penetration depth was increased compared with most Pdots in the blue region.The reversible conversion of BTE under different light irradiation was utilized to regulate the photodynamic effect and solve the problem of photosensitivity.The prepared Ce6-BTE-doped Pdots had small size,excellent optical property,efficient ROS generation and good photoswitchable ability.The cellular uptake,cytotoxicity,and photodynamic effect of the Pdots were detected in human colon tumor cells.The experiments in vitro indicated that Ce6-BTE-doped Pdots could exert excellent photodynamic effect in ON state and reduce photosensitivity in OFF state.These results demonstrated that this nanoplatform holds the potential to be used in clinical PDT. 展开更多
关键词 Photodynamic therapy semiconductor polymer dots PHOTOSENSITIZER tumor therapy
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Diketopyrrolopyrrole-based Conjugated Polymers as Representative Semiconductors for High-Performance Organic Thin-Film Transistors and Circuits
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作者 Kai-Qing Liu Yuan-He Gu +1 位作者 Zheng-Ran Yi Yun-Qi Liu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2023年第5期671-682,I0006,共13页
Since the first report of diketopyrrolopyrrole(DPP)-based conjugated polymers for organic thin-film transistors(OTFTs),these polymers have attracted great attention as representative semiconductors in high-performance... Since the first report of diketopyrrolopyrrole(DPP)-based conjugated polymers for organic thin-film transistors(OTFTs),these polymers have attracted great attention as representative semiconductors in high-performance OTFTs.Through unremitting efforts in molecular-structure regulation and device optimization,significant mobilities exceeding 10 cm2·V–1·s–1 have been achieved in OTFTs,greatly promoting the applied development of organic circuits.In this review,we summarize our progress in molecular design,synthesis and solution-processing of DPP-based conjugated polymers for OTFT devices and circuits,focusing on the roles of design strategies,synthesis methods and processing techniques.Furthermore,the remaining issues and future outlook in the field are briefly discussed. 展开更多
关键词 DIKETOPYRROLOPYRROLE Polymer semiconductors Organic thin-film transistor Organic circuits
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Soft multifunctional neurological electronic skin through intrinsically stretchable synaptic transistor 被引量:1
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作者 Pengcheng Zhu Shuairong Mu +8 位作者 Wenhao Huang Zeye Sun Yuyang Lin Ke Chen Zhifeng Pan Mohsen Golbon Haghighi Roya Sedghi Junlei Wang Yanchao Mao 《Nano Research》 SCIE EI CSCD 2024年第7期6550-6559,共10页
Neurological electronic skin(E-skin)can process and transmit information in a distributed manner that achieves effective stimuli perception,holding great promise in neuroprosthetics and soft robotics.Neurological E-sk... Neurological electronic skin(E-skin)can process and transmit information in a distributed manner that achieves effective stimuli perception,holding great promise in neuroprosthetics and soft robotics.Neurological E-skin with multifunctional perception abilities can enable robots to precisely interact with the complex surrounding environment.However,current neurological E-skins that possess tactile,thermal,and visual perception abilities are usually prepared with rigid materials,bringing difficulties in realizing biologically synapse-like softness.Here,we report a soft multifunctional neurological E-skin(SMNE)comprised of a poly(3-hexylthiophene)(P3HT)nanofiber polymer semiconductor-based stretchable synaptic transistor and multiple soft artificial sensory receptors,which is capable of effectively perceiving force,thermal,and light stimuli.The stretchable synaptic transistor can convert electrical signals into transient channel currents analogous to the biological excitatory postsynaptic currents.And it also possesses both short-term and long-term synaptic plasticity that mimics the human memory system.By integrating a stretchable triboelectric nanogenerator,a soft thermoelectric device,and an elastic photodetector as artificial receptors,we further developed an SMNE that enables the robot to make precise actions in response to various surrounding stimuli.Compared with traditional neurological E-skin,our SMNE can maintain the softness and adaptability of biological synapses while perceiving multiple stimuli including force,temperature,and light.This SMNE could promote the advancement of E-skins for intelligent robot applications. 展开更多
关键词 electronic skin SOFT stretchable polymer semiconductor synaptic transistor MULTIFUNCTIONAL
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High-Mobility Ambipolar Benzodifurandione-Based Copolymers with Regular Donor–Acceptor Dyads Synthesized via Aldol Polycondensation
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作者 Qian Che Weifeng Zhang +5 位作者 Xuyang Wei Yankai Zhou Hao Luo Jinbei Wei Liping Wang Gui Yu 《CCS Chemistry》 CSCD 2023年第11期2603-2616,共14页
In this study,a family of three benzodifurandione-baseddonor–acceptor(D–A)copolymers,namelypoly[3,7-bis((E)-1-(4-octadecyldocosyl)-2-oxo-6-yl-indolin-3-ylidene)-3,7-dihydrobenzo[1,2-b:4,5-b′]difuran-2,6-dionealt-(E... In this study,a family of three benzodifurandione-baseddonor–acceptor(D–A)copolymers,namelypoly[3,7-bis((E)-1-(4-octadecyldocosyl)-2-oxo-6-yl-indolin-3-ylidene)-3,7-dihydrobenzo[1,2-b:4,5-b′]difuran-2,6-dionealt-(E)-1,2-di(2,2′-bithiophen-5-yl)ethene](PBDO-DTE),poly[3,7-bis((E)-7-fluoro-1-(4-octadecyldocosyl)-2-oxo-6-yl-indolin-3-ylidene)-3,7-dihydrobenzo[1,2-b:4,5-b′]difuran-2,6-dione-alt-(E)-1,2-di(2,2′-bithiophen-5-yl)ethene](PFBDO-DTE),and poly[(3E,7E)-3,7-bis(1-(4-octadecyldocosyl)-2-oxo-6-yl-1,2-dihydro-3Hpyrrolo[2,3-b]pyridin-3-ylidene)-3,7-dihydrobenzo[1,2-b:4,5-b′]difuran-2,6-dione-alt-(E)-1,2-di(2,2′-bithiophen-5-yl)ethene](PNBDO-DTE),was designed and synthesized by employing aldol polycondensation reactions between benzodifurandione and bisindolin-2-ones in high yields.Further incorporation of fluorine or sp2-hybridized nitrogen atoms on the bisindolin-2-one unit induced S…F or S…N nonbonding interactions-locked polymeric conjugated backbones for PFBDO-DTE and PNBDO-DTE,respectively.Ultraviolet photoelectron spectroscopy and inverse photoemission spectroscopy measurements revealed that the two copolymers have lower frontier molecular orbitals than that of PBDO-DTE.Atomic force microscopy and two-dimensional grazing-incidence wide-angle X-ray scattering investigations indicated the PNBDO-DTE copolymer could form more ordered molecular aggregation in the solid state than PBDO-DTE and PFBDO-DTE copolymers.We fabricated thin film transistors based on these copolymers on plastic polyethylene terephthalate substrates,and they all showed ambipolar charge transport characteristics.Among them,the PNBDO-DTE-based devices afforded optimal charge transport characteristics with high hole and electron mobilities of 5.16 and 1.33cm^(2)V^(−1)s^(−1),respectively.Our study highlights that aldol polycondensation would be an extremely useful protocol in constructing high-performance polymer semiconductors. 展开更多
关键词 aldol polycondensation polymer semiconductors thin filmtransistors ambipolar charge transport nonbonding interactions MOBILITIES
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Synergistic Effects of Solvent Vapor Assisted Spin-coating and Thermal Annealing on Enhancing the Carrier Mobility of Poly(3-hexylthiophene)Field-effect Transistors 被引量:3
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作者 Xiao-Lan Qiao Jie Yang +2 位作者 Lian-He Han Ji-Dong Zhang Mei-Fang Zhua 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2021年第7期849-855,共7页
Poly(3-hexylthiophene)(P3HT)thin films,obtained by normal spin-coating and solvent vapor assisted spin-coating(SVASP)before and after thermal annealing(TA),and the corresponding devices were prepared to unravel the mi... Poly(3-hexylthiophene)(P3HT)thin films,obtained by normal spin-coating and solvent vapor assisted spin-coating(SVASP)before and after thermal annealing(TA),and the corresponding devices were prepared to unravel the microstructure-property relationship,which is of great importance for the development of organic electronics.When SVASP-TA films were used as the active layers of the organic field-effect transistors,a hole mobility up to 0.38 cm^(2)·V^(-1)·s^(-1)was achieved.This mobility was one of the highest values and one order of magnitude higher than that of the normal spin-coating films based transistors.The relationship between the microstructure and the device performance was fully investigated by UV-Vis absorption spectra,grazing incident X-ray diffraction(GIXD),and atomic force microscopy(AFM).The impressive mobility was attributed to the high crystallinity and ordered molecule packing,which stem from the synergistic effects of SVASP and thermal annealing. 展开更多
关键词 Poly(3-hexylthiophene) Polymer field-effect transistors Microstructure Polymer semiconductors
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Recent advances in developing high‑performance organic hole transporting materials for inverted perovskite solar cells 被引量:2
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作者 Xianglang Sun Zonglong Zhu Zhong’an Li 《Frontiers of Optoelectronics》 EI CSCD 2022年第4期51-64,共14页
Inverted perovskite solar cells(PVSCs)have recently made exciting progress,showing high power conversion efciencies(PCEs)of 25%in single-junction devices and 30.5%in silicon/perovskite tandem devices.The hole transpor... Inverted perovskite solar cells(PVSCs)have recently made exciting progress,showing high power conversion efciencies(PCEs)of 25%in single-junction devices and 30.5%in silicon/perovskite tandem devices.The hole transporting material(HTM)in an inverted PVSC plays an important role in determining the device performance,since it not only extracts/transports holes but also afects the growth and crystallization of perovskite flm.Currently,polymer and self-assembled monolayer(SAM)have been considered as two types of most promising HTM candidates for inverted PVSCs owing to their high PCEs,high stability and adaptability to large area devices.In this review,recent encouraging progress of high-performance polymer and SAM-based HTMs is systematically reviewed and summarized,including molecular design strategies and the correlation between molecular structure and device performance.We hope this review can inspire further innovative development of HTMs for wide applications in highly efcient and stable inverted PVSCs and the tandem devices. 展开更多
关键词 Inverted perovskite solar cells High-performance Hole transporting materials Polymer semiconductors Self-assembled monolayer
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