Chemical interaction dictated energy level alignment at the N,N '-dipentyl-3,4,9,10-perylenedicarboximide/CH3NH3PbI3 interface
文献类型：期刊论文
| 作者 | Zhang, XN; Su, ZH; Zhao, B; Yang, YG; Xiong, YM; Gao, XY; Qi, DC; Cao, L |
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2018 |
| 卷号 | 113期号:11页码:- |
| 关键词 | PEROVSKITE SOLAR-CELLS ASSISTED SOLUTION PROCESS ELECTRONIC-STRUCTURE CH(3)NH(3)PBL(3) PEROVSKITE PHOTOVOLTAIC EFFICIENCY ORGANIC SEMICONDUCTORS CH3NH3PBI3 PEROVSKITE SINGLE-CRYSTALS TRANSPORT LAYER THIN-FILMS |
| ISSN号 | 0003-6951 |
| DOI | 10.1063/1.5037624 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Here, we report the electronic structures at the N, N'-dipentyl-3,4,9,10-perylenedicarboximide (PTCDI-C5)/CH3NH3PbI3 interface identified in-situ by X-ray photoemission spectroscopy and ultraviolet photoemission spectroscopy. Strong chemical reactions are found to occur upon the deposition of PTCDI-C5 molecules on CH3NH3PbI3. Electron donation from PTCDI-C5 molecules to CH3NH3PbI3 leads to the filling of surface states and the emergence of an interfacial gap state with its onset tailed to the Fermi level. As a consequence, the downward surface band bending resulting from surface states acting as donor states at the pristine perovskite surface is reduced by 0.2 eV. After the energy level alignment at the interface is established, the perovskite conduction band minimum is found to be in line with the lowest unoccupied molecular orbital favoring the electron extraction with a moderate valence band maximum-highest occupied molecular orbital offset of , similar to 0.7 eV. The present results demonstrate that interfacial chemical reactions can dictate energetics at organic/perovskite interfaces. Understanding the chemical interaction and resultant electronic structures at those interfaces is crucial for efficient and long-term stable perovskite-based devices when passivation of chemical active sites and matched energy level could be readily reached. Published by AIP Publishing. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/30874]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Queensland Univ Technol, Sch Chem Phys & Mech Engn, Brisbane, Qld 4001, Australia 2.Chinese Acad Sci, Shanghai Inst Appl Phys, 2019 Jia Luo Rd, Shanghai 201800, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Chinese Acad Sci, High Field Magnet Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Anhui, Peoples R China 5.La Trobe Univ, La Trobe Inst Mol Sci, Dept Chem & Phys, Melbourne, Vic 3086, Australia |
| 推荐引用方式 GB/T 7714 | Zhang, XN,Su, ZH,Zhao, B,et al. Chemical interaction dictated energy level alignment at the N,N '-dipentyl-3,4,9,10-perylenedicarboximide/CH3NH3PbI3 interface[J]. APPLIED PHYSICS LETTERS,2018,113(11):-. |
| APA | Zhang, XN.,Su, ZH.,Zhao, B.,Yang, YG.,Xiong, YM.,...&Cao, L.(2018).Chemical interaction dictated energy level alignment at the N,N '-dipentyl-3,4,9,10-perylenedicarboximide/CH3NH3PbI3 interface.APPLIED PHYSICS LETTERS,113(11),-. |
| MLA | Zhang, XN,et al."Chemical interaction dictated energy level alignment at the N,N '-dipentyl-3,4,9,10-perylenedicarboximide/CH3NH3PbI3 interface".APPLIED PHYSICS LETTERS 113.11(2018):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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