JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 34
·25939-25949
·
IF 2.779
Feng Xiangyang,Wang Xiang,Zhang Bin,Gu Jianbo,Xu Chengze,Zhang Siyuan
Silver nanowires (AgNWs) are considered as an ideal material to substitute indium tin oxide (ITO) owing to their outstanding characteristics, such as excellent electrical conductivity, transmittance, and bending properties. Ultrasonic spraying method is used to fabricate AgNWs films because of its high efficiency, controllability, and high uniformity of coating. In this work, high-purity AgNWs with an average diameter of 45 nm and an average length of 20 μm were prepared via acetone settling and ethanol washing of the products obtained by a simple solvothermal method. Subsequently, flexible transparent conductive films with sheet resistance non-uniformity less than 8% were prepared through Ultrasonic spraying AgNWs and modified poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) upon polyethylene terephthalate (PET) substrate successively, and the surface roughness of the films was lessened by mechanical hot pressing. Finally, PET/AgNWs/PEDOT:PSS films were obtained with a transmittance at 550 nm of 85.06%, a sheet resistance of 45 Ω/sq, a haze of 3%, and a root mean square roughness of 14.1 nm. After being placed in air under normal temperature for two months and mechanical bending for 1000 times, respectively, the sheet resistance of the films showed only a slight change, which suggested that it was an excellent material to displace the conventional transparent conductive films.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Ming Chen,Ru-Hua Zha,Zhong-Yong Yuan,Qiang-Shan Jing,Zhong-Yuan Huang,Xing-Kun Yang,Shu-Ming Yang,Xiang-Hua Zhao,Dong-Li Xu,Guo-Dong Zou
Chemical doping is adopted to tune the work function and electrical conductivity of carbon counter electrode (CE) in HTM-free organometallic halide perovskite solar cells (PSCs). In this work, the boron and phosphorus co-doped carbon (BPC) CE is constructed by coating a B doped carbon layer onto the P-doped carbon (PC). The work function of BPC CE with B/P co-doping (B: 2.68 at.%, P: 2.23 at.%) is thus regulated to 5.12 eV from the 5.01 eV of pure carbon and 4.81 eV of PC, and the sheet resistance is modulated to 8.41 Ω sq −1 from 14.75 Ω sq −1 of pure carbon and 7.89 Ω sq −1 of PC. As a consequence, the BPC-based PSCs deliver a power conversion efficiency of 6.78%, higher than those of pristine carbon (3.72%), PC (5.39%) and BC (5.20%) based PSCs, and even comparable to that of conventional Au-based device (7.22%), due to the enhanced hole extraction ability and the maintained high electronic conductivity. Moreover, the good stability in ambient condition over a period of 720 h is also demonstrated in the BPC-based PSCs. The successful application of BPC CE in PSCs shows a promising way for fabricating low-cost, large-scale and highly efficient PSCs in future.
研究领域:
材料科学
·
可再生能源
·
太阳能电池技术
✓ 已验证
DOI
高影响因子
ORGANIC ELECTRONICS
·
2019
·
IF 3.495
Qinjun Sun,Xiaolei Shi,Xiaochun Wang,Yanyu Zhai,Liyan Gao,Zhanfeng Li,Yuying Hao,Yucheng Wu
Metal nanowires have become an inevitable candidate for the next generation transparent conductive electrodes due to the high conductivity, transparency and flexibility. Here, copper nanowires (Cu NWs) with good uniformity were prepared in sequence by electrospinning technology, calcination and ethanol vapor phase reduction. Through adjusting vapor temperature accurately, the optimized Cu NWs with large aspect ratio of above 10 5 , a low sheet resistance down to 51.4 Ω/口and a high transmittance of 80% in visible spectra were prepared. Inverted planar heterojunction perovskite solar cells with Cu NWs network as transparent electrodes were designed and a power conversion efficiency of 5.32% was achieved when the coverage of Cu NWs was 22%.
研究领域:
材料科学
·
纳米技术
·
太阳能
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2020
·
IF 8.821
Lijun Cao,Shuairu Zhu,Baohai Pan,Xinyan Dai,Weiwei Zhao,Yuan Liu,Weiping Xie,Yongbo Kuang,Xiaoqing Liu
The stability and durability of laser-induced graphene (LIG) patterns embedded in polymer substrates are significant for their practical application. However, most of currently reported LIG precursors are facing the dilemma of weak structural controllability, poor resistance to acid/base, or bad processability . In this work, we efficiently converted the synthesized poly (Ph-ddm) into LIG using a straightforward CO 2 laser, aiming to find a potential LIG precursor with excellent durability under harsh conditions. The graphene structure of obtained LIG was confirmed by Raman spectra , scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). Results indicated that the poly (Ph-ddm)-based LIG showed a low sheet resistance of 35 Ω/sq as well as a high specific surface area of 883 m 2 /g. And due to the superior properties of poly (Ph-ddm), the LIG patterns exhibited excellent resistance to strong acid/base solutions and high adhesion on the substrate, which ensured their stable application under severe conditions. Besides, potential application of as-prepared LIG was demonstrated in well-performed supercapacitors and electrode for water splitting in an alkaline medium . Based on the results in this work, polybenzoxazine could be a promising precursor for stable and durable LIG preparation.
研究领域:
材料科学
·
纳米技术
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Da-Ming Ye,Gui-Zhong Li,Gui-Gen Wang,Zhao-Qin Lin,Hai-Ling Zhou,Mao Han,Yi-Lin Liu,Jie-Cai Han
It is crucial to enhance anti-oxidation resistance of copper nanowires (Cu NWs) without degrading their transparent conductive characteristics. Here, reduced graphene oxide/copper nanowires (RGO/Cu NWs) with coating nanostructures were synthesized by a facile one-pot hydrothermal method. The copper nanowire was prepared by using copper (I) chloride as the precursor while the graphene oxide (GO) was reduced using the polyols as the reducing agent in order to obtain the coating structure, abandoning conventional tedious multi-step preparation processes. The microstructure and morphology of RGO/Cu NWs were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), selected-area electronic diffraction (SEAD) and X-ray photoelectron spectroscopy (XPS). The as-synthesized RGO/Cu NWs nanostructure is found to be almost coating structure of particle-free, high aspect ratio (L/D≈890) Cu NWs decorated with reduced graphene oxide (RGO), which accounts for the outstanding oxidation resistance. The stability tests show that the sheet resistance (R S ) of the RGO/Cu NWs is almost unchanged over 20 days at room temperature or 5 h at 60 °C. What’s more, the sheet resistance of the RGO/Cu NWs with coating structure only increases to 2.48 times after being heated for 150 min at 100 °C, which can directly indicate that the RGO/Cu NWs nanostructure has excellent anti-oxidation resistance and temporal stability. Also, the as-prepared RGO/Cu NWs transparent electrode has both low sheet resistance of 58.36 Ω/sq and high optical transmittance (87.12% @550 nm). The composite materials provide a better strategy to resolve the problem of being easily oxidized for Cu NWs and promote their wide practical applications.
研究领域:
材料科学
·
纳米技术
·
电气工程
·
化学
✓ 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）