Defect passivation of CsPbI2Br perovskites through Zn(II) doping: toward efficient and stable solar cells
文献类型：期刊论文
| 作者 | Lu, Jiajun; Chen, Shan-Ci; Zheng, Qingdong |
| 刊名 | SCIENCE CHINA-CHEMISTRY
 |
| 出版日期 | 2019-08-01 |
| 卷号 | 62期号:8页码:1044 |
| 关键词 | CsPbI2Br perovskites defect passivation Zn(II) doping all-inorganic perovskite solar cells power conversion efficiency |
| ISSN号 | 1674-7291 |
| DOI | 10.1007/s11426-019-9486-0 |
| 文献子类 | Article |
| 英文摘要 | Defect passivation is an important strategy to achieve perovskite solar cells (PVSCs) with enhanced power conversion efficiencies (PCEs) and improved stability because the trap states induced by defects in the interfaces and grain boundaries of perovskites are harmful to both large open circuit voltage and high photocurrent of devices. Here, zinc cations (Zn2+) were used as a dopant to passivate defects of the CsPbI2Br perovskite leading to Zn2+-doped CsPbI2Br film with fewer trap states, improved charge transportation, and enhanced light-harvesting ability. Thus, the best-performance PVSC based on CsPbI2Br with the optimal Zn2+ doping shows a higher PCE of 12.16% with a larger open-circuit voltage (V-OC) of 1.236 V, an improved shortcircuit current (J(SC)) of 15.61 mA cm(-2) in comparison with the control device based on the pure CsPbI2Br which exhibits a PCE of 10.21% with a V-OC of 1.123 V, a J(SC) of 13.27 mA cm(-2). Time-resolved photoluminescence results show that the Zn2+ doping leads to perovskite film with extended photoluminescence lifetime which means a longer diffusion length and subsequently enhanced photocurrent and open circuit voltage. This work provides a simple strategy to boost the performance of PVSCs through Zn2+ doping. |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.sic.ac.cn/handle/331005/26941]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Lu, Jiajun,Chen, Shan-Ci,Zheng, Qingdong. Defect passivation of CsPbI2Br perovskites through Zn(II) doping: toward efficient and stable solar cells[J]. SCIENCE CHINA-CHEMISTRY,2019,62(8):1044. |
| APA | Lu, Jiajun,Chen, Shan-Ci,&Zheng, Qingdong.(2019).Defect passivation of CsPbI2Br perovskites through Zn(II) doping: toward efficient and stable solar cells.SCIENCE CHINA-CHEMISTRY,62(8),1044. |
| MLA | Lu, Jiajun,et al."Defect passivation of CsPbI2Br perovskites through Zn(II) doping: toward efficient and stable solar cells".SCIENCE CHINA-CHEMISTRY 62.8(2019):1044. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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