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题名:
Interfacial electronic structures revealed at the rubrene/CH3NH3PbI3 interface
作者: Ji, GW; Zheng, GHJ; Zhao, B; Song, F; Zhang, XN; Shen, KC; Yang, YG; Xiong, YM; Gao, XY; Cao, L; Qi, DC
刊名: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
出版日期: 2017
卷号: 19, 期号:9, 页码:6546-6553
DOI: 10.1039/c6cp07592d
文章类型: 期刊论文
英文摘要: The electronic structures of rubrene films deposited on CH3NH3PbI3 perovskite have been investigated using in situ ultraviolet photoelectron spectroscopy (UPS) and X-ray photoelectron spectroscopy (XPS). It was found that rubrene molecules interacted weakly with the perovskite substrate. Due to charge redistribution at their interface, a downward ' band bending '-like energy shift of similar to 0.3 eV and an upward band bending of similar to 0.1 eV were identified at the upper rubrene side and the CH3NH3PbI3 substrate side, respectively. After the energy level alignment was established at the rubrene/CH3NH3PbI3 interface, its highest occupied molecular orbital (HOMO)-valence band maximum (VBM) offset was found to be as low as similar to 0.1 eV favoring the hole extraction with its lowest unoccupied molecular orbital (LUMO)-conduction band minimum (CBM) offset as large as similar to 1.4 eV effectively blocking the undesired electron transfer from perovskite to rubrene. As a demonstration, simple inverted planar solar cell devices incorporating rubrene and rubrene/poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS) hole transport layers (HTLs) were fabricated in this work and yielded a champion power conversion efficiency of 8.76% and 13.52%, respectively. Thus, the present work suggests that a rubrene thin film could serve as a promising hole transport layer for efficient perovskite-based solar cells.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000396031200023
ISSN号: 1463-9076
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27356
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Ji, GW,Zheng, GHJ,Zhao, B,et al. Interfacial electronic structures revealed at the rubrene/CH3NH3PbI3 interface[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2017-01-01,19(9):6546-6553.
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文件名: Interfacial electronic structures revealed at the rubrene_CH3NH3PbI3 interface.pdf
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