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
ISSN1463-9076
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.
DOI10.1039/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
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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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