A low-temperature TiO2/SnO2 electron transport layer for high-performance planar perovskite solar cells

doi:10.1007/s40843-019-9586-x

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	A low-temperature TiO2/SnO2 electron transport layer for high-performance planar perovskite solar cells
	Li, Nan ; Yan, Jin ; Ai, Yuqian ; Jiang, Ershuai ; Lin, Liujin ; Shou, Chunhui ; Yan, Baojie ; Sheng, Jiang ; Ye, Jichun
刊名	SCIENCE CHINA-MATERIALS
	2020
卷号	63 期号:2 页码:207-215
关键词	COMPACT LAYER EFFICIENT TIO2
DOI	10.1007/s40843-019-9586-x
英文摘要	Conventional titanium oxide (TiO2) as an electron transport layer (ETL) in hybrid organic-inorganic perovskite solar cells (PSCs) requires a sintering process at a high temperature to crystalize, which is not suitable for flexible PSCs and tandem solar cells with their low-temperatureprocessed bottom cell. Here, we introduce a low-temperature solution method to deposit a TiO2/tin oxide (SnO2) bilayer towards an efficient ETL. From the systematic measurements of optical and electronic properties, we demonstrate that the TiO2/SnO2 ETL has an enhanced charge extraction ability and a suppressed carrier recombination at the ETL/perovskite interface, both of which are beneficial to photo-generated carrier separation and transport. As a result, PSCs with TiO2/SnO2 bilayer ETLs present higher photovoltaic performance of the baseline cells compared with their TiO2 and Sn-2 single-layer ETL counterparts. The champion PSC has a power conversion efficiency (PCE) of 19.11% with an open-circuit voltage (V-oc) of 1.15 V, a short-circuit current density (k) of 22.77 mA cm(-2), and a fill factor (FF) of 72.38%. Additionally, due to the suitable band alignment of the TiO2/SnO2 ETL in the device, a high V-oc, of 1.18 V is achieved. It has been proven that the TiO2/SnO2 bilayer is a promising alternative ETL for high efficiency PSCs.
学科主题	Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20062]
专题	2020专题
作者单位	1.Ye, JC (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Sheng, J 3.Ye, JC (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
推荐引用方式 GB/T 7714	Li, Nan,Yan, Jin,Ai, Yuqian,et al. A low-temperature TiO2/SnO2 electron transport layer for high-performance planar perovskite solar cells[J]. SCIENCE CHINA-MATERIALS,2020,63(2):207-215.
APA	Li, Nan.,Yan, Jin.,Ai, Yuqian.,Jiang, Ershuai.,Lin, Liujin.,...&Ye, Jichun.(2020).A low-temperature TiO2/SnO2 electron transport layer for high-performance planar perovskite solar cells.SCIENCE CHINA-MATERIALS,63(2),207-215.
MLA	Li, Nan,et al."A low-temperature TiO2/SnO2 electron transport layer for high-performance planar perovskite solar cells".SCIENCE CHINA-MATERIALS 63.2(2020):207-215.