Light-Promoted Electrostatic Adsorption of High-Density Lewis Base Monolayers as Passivating Electron-Selective Contacts
文献类型：期刊论文
| 作者 | Yang, Xi; Ying, Zhiqin; Yang, Zhenhai; Xu, Jia-Ru; Wang, Wei; Wang, Jiajia; Wang, Zenggui; Yao, Lingze; Yan, Baojie; Ye, Jichun |
| 刊名 | ADVANCED SCIENCE
 |
| 出版日期 | 2021 |
| 卷号 | 8期号:5 |
| 关键词 | PEROVSKITE SOLAR-CELLS WORK-FUNCTION ELECTRODES CHEMICAL-MODIFICATION HIGH-EFFICIENCY SILICON METAL ENERGY POLYELECTROLYTES WATER JUNCTIONS |
| 英文摘要 | Achieving efficient passivating carrier-selective contacts (PCSCs) plays a critical role in high-performance photovoltaic devices. However, it is still challenging to achieve both an efficient carrier selectivity and high-level passivation in a sole interlayer due to the thickness dependence of contact resistivity and passivation quality. Herein, a light-promoted adsorption method is demonstrated to establish high-density Lewis base polyethylenimine (PEI) monolayers as promising PCSCs. The promoted adsorption is attributed to the enhanced electrostatic interaction between PEI and semiconductor induced by the photo-generated carriers. The derived angstrom-scale PEI monolayer is demonstrated to simultaneously provide a low-resistance electrical contact for electrons, a high-level field-effect passivation to semiconductor surface and an enhanced interfacial dipole formation at contact interface. By implementing this light-promoted adsorbed PEI as a single-layered PCSC for n-type silicon solar cell, an efficiency of 19.5% with an open-circuit voltage of 0.641 V and a high fill factor of 80.7% is achieved, which is one of the best results for devices with solution-processed electron-selective contacts. This work not only demonstrates a generic method to develop efficient PCSCs for solar cells but also provides a convenient strategy for the deposition of highly uniform, dense, and ultra-thin coatings for diverse applications. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22303]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | Ye, JC (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Yang, Xi,Ying, Zhiqin,Yang, Zhenhai,et al. Light-Promoted Electrostatic Adsorption of High-Density Lewis Base Monolayers as Passivating Electron-Selective Contacts[J]. ADVANCED SCIENCE,2021,8(5). |
| APA | Yang, Xi.,Ying, Zhiqin.,Yang, Zhenhai.,Xu, Jia-Ru.,Wang, Wei.,...&Ye, Jichun.(2021).Light-Promoted Electrostatic Adsorption of High-Density Lewis Base Monolayers as Passivating Electron-Selective Contacts.ADVANCED SCIENCE,8(5). |
| MLA | Yang, Xi,et al."Light-Promoted Electrostatic Adsorption of High-Density Lewis Base Monolayers as Passivating Electron-Selective Contacts".ADVANCED SCIENCE 8.5(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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