文献类型：期刊文献

英文题名：A low-temperature processed flower-like TiO2 array as an electron transport layer for high-performance perovskite solar cells

作者：Chen, Xiao[1];Tang, Li Juan[1];Yang, Shuang[1];Hou, Yu[1];Yang, Hua Gui[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：4

期号：17

起止页码：6521

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20162102404452);WOS:【SCI-EXPANDED(收录号:WOS:000374862600034)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21373083), SRF for ROCS, SEM, SRFDP, Programme for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, Fundamental Research Funds for the Central Universities (WD1514003 and WD1514301), China Postdoctoral Science Foundation Funded Project (2015M581547), "Chen Guang" Project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (15CG26), Project supported by the Major Research plan of the National Natural Science Foundation of China (91534202), 111 Project (B14018) and Shanghai Sailing Program (16YF1402100).

语种：英文

外文关键词：Efficiency - Electron transport properties - Nanorods - Perovskite - Solar cells - Temperature - Titanium dioxide

摘要：As an important portion in perovskite solar cells, an electron transport layer (ETL) is essential for high efficiency perovskite devices. In this work, a flower-like TiO2 array layer grown on an FTO substrate was prepared by a low-temperature (80 degrees C) chemical bath deposition (CBD) method. The flower-like TiO2 layer, which is composed of anatase TiO2 nanorods, was then utilized as an ETL for perovskite solar cells. As a result, excellent light-harvesting efficiency (LHE) and low recombination of electrons and holes lead to an enhanced power conversion efficiency (PCE, 15.71%) than that of traditional mesoporous TiO2 layer based perovskite devices (13.25%) with less hysteresis. To the best of our knowledge, it is the highest PCE for all low-temperature processed three-dimensional (3D) TiO2 ETL based perovskite devices. Moreover, it is proved that our perovskite devices are highly reproducible. This work offers a novel method to achieve all low-temperature processed, reproducible and high-performance perovskite solar cells.