文献类型：期刊文献

英文题名：Significant roughness enhancement of fluorine-doped tin oxide films with low resistivity and high transparency by using HNO3 addition

作者：Wang, Jian Tao;Zhong, Xin Hua;Wang, Jian Nong[1]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Nanomat Res Ctr, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：5

期号：64

起止页码：52174

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20152500960193);WOS:【SCI-EXPANDED(收录号:WOS:000356305300088)】；

基金：Financial supports from Pilkington Technology Management Limited, National Natural Science Foundation of China (project #: 51271077 and U1362104) and Shanghai Nanoscience and Nanotechnology Promotion Center (project #: 12nm0503300) are greatly acknowledged.

语种：英文

外文关键词：Solar cells - Nucleation - Nanocomposites - Transparency - Oxide films - Tin oxides

摘要：Current development of fluorine-doped tin oxide (FTO) films for application in solar cells is limited by tradeoffs among surface roughness related light trapping, optical transparency and electrical conductivity. Proposed methods for improving the surface roughness are usually dependent upon thickness increment or sacrificing the conductivity. In this study, we report a simple method for preparing FTO films with a flower-like grain morphology and thus a higher than ever mean roughness of 51.4-73.3 nm or mean-root-square roughness of 70.5-91 nm, by inclusion of HNO3 additive into the deposition system. The very rough films are 200-300 nm thick and also have maintained a high transparency of 80-85% in the visible region and a low sheet resistance of 14 Omega square(-1) and resistivity of 4.2 x 10(-4) Omega cm, perhaps resulting from the effects of HNO3 on heterogeneous nucleation and development of the (200) preferred orientation. The high roughness, combined with high transparency and low resistivity, would be beneficial to improving the light trapping of FTO films and thus the efficiency of solar cells.