ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jiali Li,Huihui Li,Zhongjie Ren,Shouke Yan,Xiaoli Sun
Exploring flexible and stretchable conjugated polymer devices has garnered particular attention. This work provides a new technology to improve the electrical properties in a stretching process by skillfully assisting the anisotropic tensile properties of oriented regioregular poly(3-hexylthiophene) (P3HT) films. Oriented P3HT films with a long-range ordered chain alignment are fabricated, and stretchable conducting films are achieved by laminating oriented P3HT films and polydimethylsiloxane (PDMS) layers. The differentiation of electrical response is identified when the film is under different stretching directions. The electrical stability of the P3HT film during the stretching process is much better when the stretching direction is perpendicular than along the c-axis of the P3HT film. Moreover, the multiscale structure evolution of P3HT films under stretching is explored. The technology based on oriented conductive polymers under anisotropic stretching condition provides not only a new strategy for fabricating high-quality stretchable devices but also theoretical guidance for studying the mechanical properties for the aligned conjugated film.
研究领域:
材料科学
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电子工程
·
聚合物科学
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产品关联
DOI
PubMed
高影响因子
Advanced Energy Materials
·
2011
·Vol. 1
·期 3
·431-439
·
IF 0
Tianlei Zhou,Tao Jia,Bonan Kang,Fenghong Li,Mats Fahlman,Yue Wang
The development of non-fullerene-based electron acceptors (especially organic molecules with sufficient absorption property within the solar spectrum region) for bulk-heterojunction (BHJ) organic solar cells (OSCs) is an important issue for the achievement of high photoconversion efficiency. In this contribution, a new class of organic acceptors di-cyan substituted quinacridone derivatives (DCN- n CQA, n = 4, 6 and 8) for BHJ solar cells was designed and synthesized. DCN- n CQA molecules possess facile synthesis, solution processability, visible and near-IR light absorption and relatively stable characteristics. The DCN-8CQA molecule exhibited a proper LUMO energy level (–4.1 eV), small bandgap (1.8 eV) and moderate electron mobility (10 −4 cm 2 V −1 S −1 ), suggesting that this molecule is an ideal acceptor material for the classical donor material regio-regular poly (3-hexylthiophene) (P3HT). A photovoltaic device with a structure of [ITO/PEDOT:PSS/P3HT:DCN-8CQA/LiF/Al] displayed a power conversion efficiency of 1.57% and a fill factor of 57% under 100 mW cm −2 AM 1.5G simulated solar illumination. The DCN- n CQA molecules showed remarkable absorption in the region from 650 to 700 nm, where P3HT has a weak absorption promoting overlap with the solar spectrum and potentially improving the performance of the solar cell.
研究领域:
材料科学
·
有机光电子学
✓ 已验证
DOI
ORGANIC ELECTRONICS
·
2023
·
IF 3.2
Xinlu Teng,Jun Sun,Jingzan Jiang,Shichuan Ke,Jia Li,Zhidong Lou,Yanbing Hou,Yufeng Hu,Feng Teng
Aqueous electrolyte-gated polymer transistors attracted intensive attention in the field of implantable bionics and biochemical sensors due to their simple fabrication process, low operating voltage, and biocompatibility of salt-in-water. In these devices, under gate bias, the free cations and anions in the water solution gate will drift toward the gate electrode or electrolyte/active layer interface, respectively. Under high enough bias, some ions might insert into the active layer and dope the polymer in electrochemical transistors. Therefore, the ions play a crucial role in the salt-in-water electrolyte-gated polymer electrochemical transistors. In this work, the poly (3-hexylthiophene-2, 5-diyl) (P3HT) electrochemical transistors based on different cations and anions contained in the aqueous electrolytes were characterized. The various measurements imply that the larger perchlorate ions can penetrate the P3HT film much more heavily than the smaller chloride ions and the electrochemical bulk doping occurs in the perchlorate devices while the chloride devices involve surface doping. This is why the perchlorate ions can electrochemically dope the P3HT film more heavily than the chloride ions, leading to the larger transconductance and switching ratio. The various anions show different electrochemical doping processes, leading to various electrical hysteresis characteristics. In addition, the cations can affect the doping relaxation process for the electrochemical transistors. Both cation and anion effects on the device performance and doping/dedoping processes have been investigated in this work.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 18
·6628-6636
·
IF 5.7
Yuhao Song,Bingjie Xu,Yingying Deng,Miaosen Yao,Junjie Tong,Qichao Wang,Wanlong Wang,Gentian Yue,Weifeng Zhang,Chen Dong,Furui Tan
Low-cost and stable carbon-based perovskite solar cells (C-PSCs) have been regarded as the most promising device architecture for PSC commercialization. However, due to the large interfacial resistance and energy-level mismatch between the carbon-electrode and perovskite, C-PSCs have suffered from a low fill factor (FF) and an open-circuit voltage (Voc) deficit, limiting their efficiency. Here, a low-temperature, solution-processed P3HT/NiOx organic/inorganic hybrid bilayer, where both elements are doped with graphene (G), is developed as hole-transporting layers (HTLs) for C-PSCs. The optimal G-P3HT/G-NiOx bilayer HTLs not only provide well-matched cascade band alignments that facilitate the charge separation and extraction, and reduce the recombination loss at the perovskite/carbon-electrode interface, but their G co-dopants also build carrier highways within the NiOx and P3HT matrix, accelerating the charge transport and thus reducing FF loss. As a result, a Voc improvement of 100 mV, an FF of up to 79.2%, and a best power conversion efficiency (PCE) of 19.1% for the C-PSCs are achieved. More importantly, the unencapsulated devices with G-P3HT/G-NiOx bilayer HTLs retain 88% of their initial PCE in ambient air for 2500 h; and 91% upon continuous heating at 85 °C for 637 h; and 77% after operation at the maximum power point for over 12000 min. This work provides valuable knowledge for designing bilayer HTLs for highly efficient and stable C-PSCs.
研究领域:
材料科学
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能源技术
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光伏器件
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产品关联
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 52
·32671-32679
·
IF 3.361
Hailian Bao,Xiaodi Chen,Rui Yuan,Chao Zhang,Shiai Xu
A surface heterojunction catalyst of g-C3N4–PEDOT/P3HT with P3HT and PEDOT as the polymer sensitizer and hole transport pathway is successfully prepared. The as constructed g-C3N4–PEDOT/P3HT composite exhibits a photocatalyst H2 evolution rate up to 427703.3 μmol h−1 g−1 which is 1059 times higher than that of g-C3N4, 118 times higher than that of g-C3N4–PEDOT with ascorbic acid as sacrificial reagents. What's more, the g-C3N4–PEDOT/P3HT can even show an obviously enhanced photocatalytic H2 evolution rate which is 6.1 times higher than that of pure g-C3N4 in pure water without any sacrificial reagent. Combining the experimental results and molecular dynamic (MD) simulation results, a possible mechanism can be drawn that the existed PEDOT possesses relatively higher hole mobility and can be used as a hole conductor between g-C3N4 and P3HT. Then, the photogenerated holes migration can be accelerated by PEDOT from the VB of g-C3N4 to the VB of P3HT. All those factors may benefit the synergy among g-C3N4, PEDOT and P3HT, which finally facilitates the rapid migration of photoinduced electron–hole pairs and eventually improves the photocatalytic H2 activity process of g-C3N4–PEDOT/P3HT with visible light. The present work may provide useful insights for designing a surface heterojunction composite photocatalyst with high photocatalytic activity for H2 production.
研究领域:
材料科学
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化学
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光催化
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可再生能源
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DOI
高影响因子
Physica Status Solidi-Rapid Research Letters
·
2020
·Vol. 14
·期 4
·1900723
·
IF 2.291
Yadan Deng,Jingzan Jiang,Jun Sun,Yufeng Hu,Qiuhong Cui,Zhenbo Deng,Zhidong Lou,Yanbing Hou,Feng Teng
Fabrication of nanowires in polymer films can dramatically enhance the mobility of thin-film transistors (TFTs). Unlike the popular method of forming nanowires after spin-coating films, here a water-bath method to fabricate the micrometer-long nanowires in the poly(3-hexylthiophene) (P3HT) solution is introduced, which is suitable for large-area printing electronic application. The resulting transistor exhibits significantly enhanced mobility and excellent device stability. However, the threshold voltage of the device is increased, compared with the amorphous film device. The underlying mechanism of the mesoscale crystalline induced threshold voltage increase has been rarely studied. The temperature-dependent characteristics imply that the activation energy of the device with nanowires is higher than that of the amorphous one, indicating nanowires can introduce deep traps. This suggests that the charge transport is mainly limited by the deep traps at the junctions between the nanowires considering the trap density inside the nanowires is significantly low. The deep traps introduced by the junctions can increase the threshold voltage as the device needs higher voltage to fill these traps in the channel before the device is turned on. This explains why the devices with nanowires have an increased threshold voltage while their mobilities are dramatically enhanced.
研究领域:
材料科学
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凝聚态物理
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有机电子学
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薄膜晶体管
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半导体器件物理
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DOI
高影响因子
Journal of Physical Chemistry Letters
·
2022
·
IF 6.888
Siyuan Weng,Man Zhao,Dayong Jiang,Qingcheng Liang
Both flat-spectrum responsivity and high external quantum efficiency (EQE) of bulk heterojunction organic photodetectors (BHJ OPDs) are greatly in demand and still challenging to realize from the ultraviolet (UV) to near-infrared (NIR) regions. In this article, conjugated polymer donor poly(3-hexylthiophene) (P3HT) and PTB7-Th are blended with a low band gap nonfullerene acceptor (NFA) IEICO-4F to form a ternary BHJ active layer, thereby forming a BHJ OPD with a broadband responsivity spectrum from UV to visible light to NIR region (200–1100 nm). Under 6 V voltage and in the range from 280 to 810 nm, the ternary BHJ OPD shows a relatively flat responsivity spectrum, and the highest responsivity is 1.348 A/W, which is 1.34 times that of the binary BHJ OPD. Specifically, the ternary BHJ OPD achieved the highest EQE at 285 nm and as high as 449.31%. In addition, the ternary OPD detectivity (D*) is 2.65 times that of the binary BHJ OPD. Therefore, ternary BHJ as an active layer provides an effective method to develop BHJ OPDs with an expanded response range, higher responsivity, improved EQE, and broadband spectrum with flat spectral response from the UV to NIR region.
研究领域:
有机电子学
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光电子学
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材料科学
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半导体器件
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光子学
✓ 已验证
DOI
高影响因子
Science Advances
·
2022
·Vol. 8
·期 40
·
IF 14.957
Jing Xu,Yang Jin,Kai Liu,Nawei Lyu,Zili Zhang,Bin Sun,Qianzheng Jin,Hongfei Lu,Huajun Tian,Xin Guo,Devaraj Shanmukaraj,Hui Wu,Meicheng Li,Michel Armand,Guoxiu Wang
Recycling lithium from spent batteries is challenging because of problems with poor purity and contamination. Here, we propose a green and sustainable lithium recovery strategy for spent batteries containing LiFePO4, LiCoO2, and LiNi0.5Co0.2Mn0.3O2 electrodes. Our proposed configuration of “lithium-rich electrode || LLZTO@LiTFSI+P3HT || LiOH” system achieves double-side and roll-to-roll recycling of lithium-containing electrode without destroying its integrity. The LiTFSI+P3HT-modified LLZTO membrane also solves the H+/Li+ exchange problem and realizes a waterproof protection of bare LLZTO in the aqueous working environment. On the basis of these advantages, our system shows high Li selectivity (97%) and excellent Faradaic efficiency (≥97%), achieving high-purity (99%) LiOH along with the production of H2. The Li extraction processes for spent LiFePO4, LiNi0.5Co0.2Mn0.3O2, and LiCoO2 batteries is shown to be economically feasible. Therefore, this study provides a previously unexplored technology with low energy consumption as well as high economic and environmental benefits to realize sustainable lithium recycling from spent batteries.
研究领域:
材料科学
·
环境科学
·
可持续发展
·
电池技术
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产品关联
DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
·
2022
·
IF 11.889
Fan Cheng,Hui Zhang,Siyu Sun,Zhengkui Li
A two-chamber microbial photoelectrochemical cell (MPEC) with a denitrification biocathode and an α-Fe 2 O 3 /P3HT photoanode was established aimed to enhance nitrate removal from wastewater of low carbon sources and achieve simultaneous ibuprofen degradation. The results demonstrated that the average removal of NO 3 – -N in the biocathode reached 96.56 ± 0.72% when the COD/NO 3 – -N was 0.75, and the relative contributions of heterotrophic and autotrophic denitrification were 21.47% and 78.53%, respectively. When there was no organic source in the influent, the maximum removal of NO 3 – -N was less than 45%. High-throughput sequencing revealed that both heterotrophic bacteria, such as Bacillus , and autotrophic bacteria (e.g., Thermomonas and Hydrogenophaga ) dominated in the cooperative denitrification biocathode. Moreover, the functional gene analysis showed that the abundance of genes related to denitrification was highest in the cooperative denitrification biocathode. In addition, the photocatalytic degradation efficiency of ibuprofen in the anode chamber attained 67.95% ± 0.97%.
研究领域:
环境工程
·
微生物学
·
电化学
·
水处理
✓ 已验证
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yu Han,Jun Li,Shuhuan Hao,Wan-Zhen Fo,Liwen Cao,Mengjiao Li,Yanan Liu,Jianhua Zhang
Photonic synaptic transistors, designed to emulate the multispectral light detection of retinal neurons, play a pivotal role in advancing artificial vision systems capable of full-color image recognition. However, their limited sensitivity to weak and multispectral light significantly hampers their application in full-color image capture and recognition. In this work, a p-i-n structured synaptic transistor is introduced that improves weak light sensitivity and enhances synaptic performance by addressing interface issues. By integrating P3HT/LiF/InZnGdO nanofibers as p-i-n structure, the spectral response is successfully broadened from visible to near-UV region, achieving sensitivity to light intensities as low as 0.05 mW cm −2 . The device exhibits remarkable PPF characteristics across the wavelength range of 395–633 nm, with the PPF index showing a maximum increase of 84% compared to the single InZnGdO nanofiber device. Additionally, multiple neural networks are constructed with data from the synaptic transistor array driven by wavelength-tunable synaptic plasticity to validate the device's feasibility in various application scenarios. The proposed device achieved a recognition accuracy of up to 95.26% for high-precision full-color images based on the public CIFAR-10 dataset. This p-i-n structure offers a novel pathway to enhance the synaptic performance of metal oxide-based synaptic transistors, advancing the development of next-generation artificial vision.
研究领域:
神经形态工程
·
光电子学
·
人工智能
·
材料科学
·
传感器与探测器
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）