Grain Boundary Defects Passivated with tert-Butyl Methacrylate for High-Efficiency Perovskite Solar
文献类型：期刊论文
| 作者 | Zhao, Min; Yan, Jin; Yu, Gang; Yang, Weichuang; Wu, Jiarui; Zhang, Yongqiang; Sheng, Jiang; Sun, Jingsong; Shou, Chunhui; Yan, Baojie |
| 刊名 | ACS APPLIED ENERGY MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 4期号:10页码:11298-11305 |
| 关键词 | PERFORMANCE TRIHALIDE CELLS DEPOSITION TRANSPORT LENGTHS LAYERS |
| 英文摘要 | A high-quality perovskite film is critical to realize high-efficiency and hysteresis-less perovskite solar cells (PSCs). However, a solution-processed perovskite layer presents many ionic vacancies on grain boundaries, which serve as nonradiative recombination centers that cause a loss of photocurrent. Herein, a trace amount of Lewis base tert-butyl acrylate (TBA) with both effective C = O and C = C functional groups is introduced to synergistically control the crystallization process and saturate surface dangling bonds. The C = O groups of TBA strongly bond to the uncoordinated Pb2+ to be a more stable TBA-PbI2 Lewis adduct, slowing down the perovskite crystallization to form a high-crystalline quality film and suppressing the formation of nonradiative recombination defects at perovskite boundaries. In addition, the pi-sigma and pi-pi conjugated bonds of C = C and -C = O in TBA show a strong delocalized electron-rich structure, promoting the photogenerated charge carrier diffusion in the perovskite layer. As a consequence, the open-circuit voltage of a TBAPSC is significantly increased from 1.07 to 1.12 V and the fill factor is improved from 78.20 to 81.56%. Thus, the TBA-PSC achieves a high power conversion efficiency of 22.82% with negligible hysteresis. Therefore, the TBA additive is a feasible and efficient method to improve the perovskite crystalline quality for high-performance PSCs. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21460]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | 1.Ye, JC (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Shou, CH (corresponding author), Zhejiang Energy Grp R&D, Hangzhou 310003, Peoples R China. 3.Sheng, J |
| 推荐引用方式 GB/T 7714 | Zhao, Min,Yan, Jin,Yu, Gang,et al. Grain Boundary Defects Passivated with tert-Butyl Methacrylate for High-Efficiency Perovskite Solar[J]. ACS APPLIED ENERGY MATERIALS,2021,4(10):11298-11305. |
| APA | Zhao, Min.,Yan, Jin.,Yu, Gang.,Yang, Weichuang.,Wu, Jiarui.,...&Ye, Jichun.(2021).Grain Boundary Defects Passivated with tert-Butyl Methacrylate for High-Efficiency Perovskite Solar.ACS APPLIED ENERGY MATERIALS,4(10),11298-11305. |
| MLA | Zhao, Min,et al."Grain Boundary Defects Passivated with tert-Butyl Methacrylate for High-Efficiency Perovskite Solar".ACS APPLIED ENERGY MATERIALS 4.10(2021):11298-11305. |
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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