JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2017
·
IF 4.233
Feng Xu,Wei Xu,Bingxin Mao,Wenfeng Shen,Yan Yu,Ruiqin Tan,Weijie Song
In this article, silver nanowires (AgNWs) with aspect ratios of 1000 and lengths up to 200 μm are obtained by a modified polyol approach. These very long AgNWs are then utilized to prepare transparent electrodes (TEs) displaying a transmittance of 91.3% at a sheet resistance of 8.6 ohm/sq without any post-treatment. Furthermore, we also demonstrate a process for the cold welding of Ag NWs by simply dipping the AgNWs films into CTAB solutions, resulting in a further improvement for the optoelectronic performance. After the post-treatment, the AgNW-based TEs can achieve a transmittance of 93% at a sheet resistance of 9.5 ohm/sq. In addition, the electric behaviors of AgNW-based TEs are investigated. In the bulk-like regime, for the as-prepared AgNW-based TEs, the Figure of merit (FOM), DC to optical conductivity ratio reaches up to 566.8. After the cold welding process, the DC to optical conductivity ratio can reach even higher values (631.6). In the percolative regime, the as-prepared and welded AgNW-based TEs can achieve Π (FOM with percolative-like behavior) values of 166.8 and 242.1, respectively.
研究领域:
材料科学
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·Vol. 60
·期 7
·3392-3407
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IF 3.9
Wang Xuewen,Zhao Jie,Shi Qingwen,Li Peibo,Luo Guoqiang,Shen Qiang,Sun Yi
Metal electrodes of crystalline silicon solar cells need to possess good photoelectric conversion properties and play a critical role in converting solar energy into electrical energy, making it particularly important to obtain highly conducive, cost-effective and chemically stable materials. This paper prepared uniformly silver-coated copper powders (Cu@Ag) via electroless plating and a conductive film with low sheet resistance by air oxidation combined with hydrogen reduction sintering (jointly referred to as oxidation–reduction sintering). In addition, the densification mechanism of the Cu@Ag conductive film during sintering was revealed. Results showed that oxidation–reduction sintering promoted the diffusion between Cu and Ag, enhancing the plastic flow of phases and improving the densification of the conductive film. Moreover, the densification of the conducive films was further improved by designing multiple layers. The sheet resistance of the four-layer Cu@Ag conductive film was reduced to 1.5 mΩ/□ at 700 °C, while that of the four-layer Cu@Ag conductive film increased by only 0.6 mΩ/□ at 200 °C after eight days, much more stable than Cu film. This work demonstrates the tremendous potential of oxidation-resistant Cu@Ag conductive pastes in low-cost photovoltaic cells, electronics, and other commercial applications. Graphical
研究领域:
材料科学
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太阳能技术
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电子工程
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产品关联
DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2020
·Vol. 36
·期 6
·1279-1283
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IF 1.063
Gao Liguo,Yan Yeling,Li Yang,Ma Tingli
To reduce the quadratic scaling of the series resistance( R s ) and sheet resistance( R st ) of the devices, physical isolation of the large area devices into small pieces has been proven to be a reliable and cost-efficient patterning technique. In this paper, we got an interesting result that the physical isolation did not show obvious effect on the photovoltaic performance of perovskite solar cells(PSCs) when fixing the active area. Three different isolation types, unetched ITO, etched ITO, and laser etching whole devices, have been induced to investigate the physical isolation roles. The results show that the electrons and holes could be collected efficiently in active area for all the isolation types. The proposed mechanism illustrates that the nonradiative recombination and recombination of electrons and hole in inactive area do not influence the performance of devices. This work may open a new way for the commercialization of PSCs by reducing the complex process and the etching costs.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
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2020
·Vol. 32
·期 5
·055603
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IF 3.551
Wenwen Wang,Zhonglin Yang,Yujia Gu,Zelei Wu,Guixin Wang,Guinan Chen,Minchu Huang,Chenhui Xu,Cui Ye,Wang Zhang,Jianwei Nai,Yongwu Peng,Jun Pan,Changhui Ye
Silver nanowires are susceptible to degradation under ultraviolet (UV) light illumination. Encapsulating silver nanowire transparent conductive films (AgNW TCFs) with UV shielding materials usually result in the increasing of the sheet resistance or the decrease of the visible light transparency. Herein, we combine a reducing species (FeSO4) and a thin layer (overcoating) of UV shielding material to solve the stability and the optical performance issues simultaneously. The AgNW TCFs show excellent stability under continuous UV light illumination for 14 h, and their sheet resistance varies only 6%. The dramatic enhancement of the stability against UV light illumination for as-obtained TCFs will make them viable for real-world applications in touch panels and displays.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）