Novel exciton dissociation behavior in tin-lead organohalide perovskites

doi:10.1016/j.nanoen.2016.08.015

CORC > 北京大学 > 化学与分子工程学院

	Novel exciton dissociation behavior in tin-lead organohalide perovskites
	Lin, Guoming ; Lin, Yuanwei ; Huang, Huan ; Cui, Rongli ; Guo, Xihong ; Liu, Bing ; Dong, Jinquan ; Guo, Xuefeng ; Sun, Baoyun
刊名	NANO ENERGY
	2016
关键词	Tin-lead organohalide perovskites Fullerenes Solar cells Exciton dissociation behaviors HETEROJUNCTION SOLAR-CELLS OPEN-CIRCUIT VOLTAGE HIGH-EFFICIENCY PHOTOVOLTAIC PERFORMANCE QUANTUM EFFICIENCY CHARGE SEPARATION RECOMBINATION ABSORPTION TRIHALIDE
DOI	10.1016/j.nanoen.2016.08.015
英文摘要	The design of organic-inorganic trihalide perovskite solar cells with higher performance, lower environmental pollution, lower cost and easier of fabrication should be a significant stride towards their practical application. Nevertheless, the contribution of exciton dissociation behavior of the perovskite to this strategy has not been recognized comparing with film morphology, device architecture and fabrication process. Here we demonstrated a series of solution-processed solid-state tin-lead organohalide perovskite photovoltaic solar cells using carefully selected fullerene derivatives as the electron transport layer. The hybrid excitonic feature of CH3NH3Sn0.5Pb0.5I3 was revealed for the first time by comparing the exciton dissociation behaviors of CH3NH3Sn0.5Pb0.5I3 with conventional excitonic semiconductor in both planar heterojunction solar cells and lateral architecture photosensors. By optimizing the lowest unoccupied molecular orbital level of electron transport layer materials, high open circuit voltage of 0.69 V, short circuit photocurrent density of 22.8 mA cm-2 and power conversion efficiency of more than 10% were achieved with the incident photon conversion efficiency spectra onset reaching 1050 nm. These devices may work as high performance photodetectors with a broad spectral response expanding from UV-visible to near-infrared. Our results have suggested the exciton dissciation behavior to be an efficient perspective for the improvement of provskite solar cells. (C) 2016 Elsevier Ltd. All rights reserved.; National Natural Science Funds of China [21271174, 21225311, 91333102, 21402202, 21373014, 51121091]; 973 Project [2012CB932601, 2012CB921404]; SCI(E); EI; ARTICLE; guoxf@pku.edu.cn; sunby@ihep.ac.cn; 638-646; 27
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/494354]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Lin, Guoming,Lin, Yuanwei,Huang, Huan,et al. Novel exciton dissociation behavior in tin-lead organohalide perovskites[J]. NANO ENERGY,2016.
APA	Lin, Guoming.,Lin, Yuanwei.,Huang, Huan.,Cui, Rongli.,Guo, Xihong.,...&Sun, Baoyun.(2016).Novel exciton dissociation behavior in tin-lead organohalide perovskites.NANO ENERGY.
MLA	Lin, Guoming,et al."Novel exciton dissociation behavior in tin-lead organohalide perovskites".NANO ENERGY (2016).