Substrate effect on the interfacial electronic structure of thermally-evaporated CH3NH3PbI3 perovskite layer
文献类型：期刊论文
| 作者 | Zou, Ye1; Meng, Qing1; Mao, Hongying2,3; Zhu, Daoben1 |
| 刊名 | ORGANIC ELECTRONICS
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 41页码:307-314 |
| 关键词 | Perovskite Solar Cell Energy Level Alignment Electronic Structure Work Function Ultraviolet Photoelectron Spectroscopy |
| 英文摘要 | The impact of substrate work function on the interfacial electronic structure of thermally-evaporated CH3NH3PbI3 perovskite films on various substrates have been systematically investigated using in-situ ultraviolet photoelectron spectroscopy (UPS) and X-ray photoelectron spectroscopy (XPS). On substrates with work function lower than similar to 4.43 eV, a Fermi level pinning effect of the lowest unoccupied molecular orbital (LUMO) is observed, resulting in the near zero electron extraction barrier for the CH3NH3PbI3 perovskite solar cells. On the other hand, when substrates with high work function are used, even exceed the highest occupied molecular orbital (HOMO) of CH3NH3PbI3, an almost constant hole extraction barrier of similar to 0.88 eV is observed, indicating that the efficiency of hole extraction at these interfaces are low. In order to understand the low hole extraction efficiency at interfaces between CH3NH3PbI3 and these high work function electrodes, the evolution of electronic structures at the interface between CH3NH3PbI3 and MoO3 is further investigated. The charge transfer and dipole formation between CH3NH3PbI3 and MoO3 are deduced from the UPS and XPS results, and the energy level alignment between CH3NH3PbI3 and MoO3 is discussed. (C) 2016 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/38006]  |
| 专题 | 化学研究所_有机固体实验室 |
| 作者单位 | 1.Chinese Acad Sci, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China 2.Hangzhou Normal Univ, Dept Phys, Hangzhou 311121, Zhejiang, Peoples R China 3.Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zou, Ye,Meng, Qing,Mao, Hongying,et al. Substrate effect on the interfacial electronic structure of thermally-evaporated CH3NH3PbI3 perovskite layer[J]. ORGANIC ELECTRONICS,2017,41:307-314. |
| APA | Zou, Ye,Meng, Qing,Mao, Hongying,&Zhu, Daoben.(2017).Substrate effect on the interfacial electronic structure of thermally-evaporated CH3NH3PbI3 perovskite layer.ORGANIC ELECTRONICS,41,307-314. |
| MLA | Zou, Ye,et al."Substrate effect on the interfacial electronic structure of thermally-evaporated CH3NH3PbI3 perovskite layer".ORGANIC ELECTRONICS 41(2017):307-314. |
入库方式： OAI收割
来源：化学研究所
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