气候变化领域集成服务门户(CCPortal): Tunable hysteresis effect for perovskite solar cells

CCPortal

DOI	10.1039/c7ee02048a
	Tunable hysteresis effect for perovskite solar cells
	Rong Y.; Hu Y.; Ravishankar S.; Liu H.; Hou X.; Sheng Y.; Mei A.; Wang Q.; Li D.; Xu M.; Bisquert J.; Han H.
发表日期	2017
ISSN	17545692
起始页码	2383
结束页码	2391
卷号	10 期号:11
英文摘要	Perovskite solar cells (PSCs) usually suffer from a hysteresis effect in current-voltage measurements, which leads to an inaccurate estimation of the device efficiency. Although ion migration, charge trapping/detrapping, and accumulation have been proposed as a basis for the hysteresis, the origin of the hysteresis has not been apparently unraveled. Herein we reported a tunable hysteresis effect based uniquely on open-circuit voltage variations in printable mesoscopic PSCs with a simplified triple-layer TiO2/ZrO2/carbon architecture. The electrons are collected by the compact TiO2/mesoporous TiO2 (c-TiO2/mp-TiO2) bilayer, and the holes are collected by the carbon layer. By adjusting the spray deposition cycles for the c-TiO2 layer and UV-ozone treatment, we achieved hysteresis-normal, hysteresis-free, and hysteresis-inverted PSCs. Such unique trends of tunable hysteresis are analyzed by considering the polarization of the TiO2/perovskite interface, which can accumulate positive charges reversibly. Successfully tuning of the hysteresis effect clarifies the critical importance of the c-TiO2/perovskite interface in controlling the hysteretic trends observed, providing important insights towards the understanding of this rapidly developing photovoltaic technology. © The Royal Society of Chemistry 2017.
英文关键词	Carbon; Cesium compounds; Open circuit voltage; Perovskite; Perovskite solar cells; Photovoltaic effects; Solar cells; Titanium compounds; Titanium dioxide; Zirconium compounds; Charge trapping/detrapping; Current voltage measurement; Device efficiency; Hysteresis effect; Photovoltaic technology; Positive charges; Spray deposition; UV-ozone treatment; Hysteresis; control system; efficiency measurement; estimation method; fuel cell; hysteresis; inorganic compound; photovoltaic system; polarization
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190389
作者单位	Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China; Institute of Advanced Materials (INAM), Universitat Jaume i, Castelló, 12006, Spain; Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
推荐引用方式 GB/T 7714	Rong Y.,Hu Y.,Ravishankar S.,et al. Tunable hysteresis effect for perovskite solar cells[J],2017,10(11).
APA	Rong Y..,Hu Y..,Ravishankar S..,Liu H..,Hou X..,...&Han H..(2017).Tunable hysteresis effect for perovskite solar cells.Energy & Environmental Science,10(11).
MLA	Rong Y.,et al."Tunable hysteresis effect for perovskite solar cells".Energy & Environmental Science 10.11(2017).