文献类型：期刊文献

英文题名：Highly efficient overlayer derived from peroxotitanium for dye-sensitized solar cells

作者：Yang, Shuang[1];Hou, Yu[1];Zhang, Bo[1];Yang, Xiao Hua[1];Fang, Wen Qi[1];Zhao, Hui Jun[2];Yang, Hua Gui[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Griffith Univ, Ctr Clean Environm & Energy, Brisbane, Qld 4222, Australia

年份：2013

卷号：1

期号：4

起止页码：1374

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20131816289775);WOS:【SCI-EXPANDED(收录号:WOS:000314633500053)】；

基金：This work was financially supported by Major Basic Research Programme of Science and Technology Commission of Shanghai Municipality (10JC1403200), Shuguang Talents Programme of Education Commission of Shanghai Municipality (09SG27), National Natural Science Foundation of China (20973059, 91022023, 21076076), Fundamental Research Funds for the Central Universities (WJ0913001), Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning and Program for New Century Excellent Talents in University (NCET-09-0347).

语种：英文

外文关键词：Silica - Aluminum oxide - Niobium oxide - Zirconia - Chlorine compounds - Coatings - Energy conversion efficiency - Titanium dioxide - Alumina

摘要：Low-cost and high-efficiency dye-sensitized solar cells (DSSCs) have attracted intense research attention recently, especially the key component of sensitized titanium dioxide (TiO2) photoanode. Owing to the short electron diffusion length of sintered TiO2 nanoparticles and the charge recombination near the FTO substrate, crucial structures of overlayers on the FTO substrate and the whole TiO2 film have been applied. However, the generally accepted TiCl4 overlayer cannot work effectively due to its loose structure and the presence of chloride ions. Therefore, researchers are still faced with the challenge of developing new efficient overlayers on TiO2 photoanodes. In this study, by employing super-pure peroxotitanium solution (PTS), we have succeeded in significantly improving DSSC performance with simple dip coating. The uniform and compact structure of PTS overlayers can be ascribed to a polymerization mechanism. Overlayers derived from TiCl4, PTS and other materials such as Nb2O5, Al2O3, SiO2 or ZrO2 are probed. Among these coatings, an energy conversion efficiency as high as 7.33% has been achieved by applying PTS overlayers on the FTO substrate and the whole TiO2 film.