Introduction of 4-hydroxybenzaldehyde as interface modifier with multidimensional defects passivation effect for high-performance perovskite solar cells
文献类型：期刊论文
| 作者 | Wu, Weiwei1,2; Xu, Huifen1,2,3; Liu, Guozhen3; Zheng, Haiying1,2; Pan, Xu3
|
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2021-12-30 |
| 卷号 | 570 |
| 关键词 | Perovskite solar cells Interface modification 4-hydroxybenzaldehyde Defect passivation Stability |
| ISSN号 | 0169-4332 |
| DOI | 10.1016/j.apsusc.2021.151259 |
| 通讯作者 | Zheng, Haiying(hyzheng@ahu.edu.cn) |
| 英文摘要 | The various types of surfaced point defects and grain boundaries (GBs) of perovskite films have become an obstacle to the development of the overall power conversion efficiency (PCE) and long-term stability of perovskite solar cells (PSCs). Recently, the interfacial modification engineering has been demonstrated as an efficient strategy to reduce defects density and suppress non-radiative recombination. Herein, we report a novel interfacial modification material, 4-hydroxybenzaldehyde (HBA) with multifunctional groups (-CHO and -OH) to modify the interface between perovskite film and hole transport layer (HTL). It is found that the HBA interfacial modifier cannot only passivate one-dimensional point defects, including uncoordinated lead ion (Pb2+) and FA+/ MA+ vacancies by coordination interaction or hydrogen bond, but also passivate two-dimensional extended defects via promoting secondary growth of grains to reduce the number of GBs. Consequently, the PCE is significantly improved from 18.84% for the control device to 20.89% for HBA-modified device. Meanwhile, the device with HBA interfacial modifier exhibits negligible hysteresis and excellent environmental stability against humidity and thermal. This study provides important insight to reasonably design passivation molecular structure for obtaining highly efficient and stable PSCs. |
| WOS关键词 | HALIDE PEROVSKITES ; EFFICIENT ; LENGTHS |
| 资助项目 | Natural Science Foundation of Anhui Province[2008085QE208] ; CASHIPS Director's Fund[YZJJ2021QN20] |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000722425100004 |
| 出版者 | ELSEVIER |
| 资助机构 | Natural Science Foundation of Anhui Province ; CASHIPS Director's Fund |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/126722]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zheng, Haiying |
| 作者单位 | 1.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China 2.Anhui Univ, Inst Informat Technol, Hefei 230601, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Weiwei,Xu, Huifen,Liu, Guozhen,et al. Introduction of 4-hydroxybenzaldehyde as interface modifier with multidimensional defects passivation effect for high-performance perovskite solar cells[J]. APPLIED SURFACE SCIENCE,2021,570. |
| APA | Wu, Weiwei,Xu, Huifen,Liu, Guozhen,Zheng, Haiying,&Pan, Xu.(2021).Introduction of 4-hydroxybenzaldehyde as interface modifier with multidimensional defects passivation effect for high-performance perovskite solar cells.APPLIED SURFACE SCIENCE,570. |
| MLA | Wu, Weiwei,et al."Introduction of 4-hydroxybenzaldehyde as interface modifier with multidimensional defects passivation effect for high-performance perovskite solar cells".APPLIED SURFACE SCIENCE 570(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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