Interfacial electronic structures revealed at the rubrene/CH3NH3PbI3 interface

doi:10.1039/c6cp07592d

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Interfacial electronic structures revealed at the rubrene/CH3NH3PbI3 interface
	Ji, GW; Zheng, GHJ; Zhao, B; Song, F; Zhang, XN; Shen, KC; Yang, YG; Xiong, YM; Gao, XY; Cao, L; Qi, DC
	2017
发表期刊	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN	1463-9076
卷号	19 期号:9 页码:6546-6553
文章类型	期刊论文
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.
DOI	10.1039/c6cp07592d
收录类别	SCI
语种	英语
WOS记录号	WOS:000396031200023
引用统计
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/27356
专题	中科院上海应用物理研究所2011-2018年
推荐引用方式 GB/T 7714	Ji, GW,Zheng, GHJ,Zhao, B,et al. Interfacial electronic structures revealed at the rubrene/CH3NH3PbI3 interface[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2017,19(9):6546-6553.
APA	Ji, GW.,Zheng, GHJ.,Zhao, B.,Song, F.,Zhang, XN.,...&Qi, DC.(2017).Interfacial electronic structures revealed at the rubrene/CH3NH3PbI3 interface.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,19(9),6546-6553.
MLA	Ji, GW,et al."Interfacial electronic structures revealed at the rubrene/CH3NH3PbI3 interface".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 19.9(2017):6546-6553.

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