新型合成二氧化钛提高染料敏化太阳能电池的效率

Enhanced efficiency of dye-sensitized solar cells with novel synthesized TiO2.

作者信息

Ju Ki-Young, Cho Jung-Min, Cho Sung-June, Yun Je-Jung, Mun Soo-San, Han Eun-Mi

机构信息

Department of Advanced Chemicals, Chonnam National University, Gwangju 500-757, Korea.

出版信息

J Nanosci Nanotechnol. 2010 May;10(5):3623-7. doi: 10.1166/jnn.2010.2277.

DOI:10.1166/jnn.2010.2277

PMID:20359013

Abstract

An anatase TiO2 and three kinds of novel TiO2 nanoparticles were prepared by a hydrothermal method for dye-sensitized solar cells (DSSCs), which were obtained by mixing NaOH (10 M), KOH (14 M) and LiOH (10 M) solution with an anatase TiO2 powder, respectively. The TiO2 working electrodes of DSSCs were prepared and the photoelectric properties of the cells were characterized. The influence of different poly(ethylene glycol) contents in TiO2 films with and without HNO3 treatment on the electron transfer in DSSCs were investigated. It is found that the DSSC with HNO3 (0.002 mol/l)-treated film containing 16.7 wt% PEG shows the higher power conversion efficiency of 6.0%, which was mainly depended on the degrees of TiO2 pore size and uniformity of TiO2 films.

摘要

采用水热法制备了一种锐钛矿型TiO₂和三种新型TiO₂纳米颗粒用于染料敏化太阳能电池（DSSC），分别将NaOH（10 M）、KOH（14 M）和LiOH（10 M）溶液与锐钛矿型TiO₂粉末混合得到这些纳米颗粒。制备了DSSC的TiO₂工作电极并对电池的光电性能进行了表征。研究了不同聚乙二醇含量的TiO₂薄膜在有无HNO₃处理的情况下对DSSC中电子转移的影响。结果发现，含有16.7 wt% PEG且经HNO₃（0.002 mol/l）处理的薄膜的DSSC具有更高的功率转换效率，为6.0%，这主要取决于TiO₂孔径大小和TiO₂薄膜的均匀程度。