摘要
用直流磁控溅射法在不同溅射功率下沉积了TiO2薄膜,并制备了染料敏化太阳能电池。I-V曲线的结果表明,150～200W,随着溅射功率的升高,电池的短路光电流和光电转换效率增大,200W时制备的TiO2电极的光电转换效率较175W时的提高了75%,225W时短路光电流和转换效率均有所下降;从喇曼光谱、透射光谱等的表征可知,200W时沉积的TiO2薄膜开始形成锐钛矿结构,并且其厚度比225W时沉积的薄膜更大。
TiO2 films deposited by direct current magnetron sputtering at different powers were used to fabricate dye-sensitized solar cells. The I-V curves show that with the sputtering power increasing from 150 W to 200 W, remarkable enhancements were observed in both short-circuit photoeurrent （Isc） and photoelectric conversion efficiency （η）. Especially, the η of the TiO2 electrode prepared at 200 W increased by 75% than that prepared at 175 W. However, the Isc and η decreased as TiO2 electrode prepared at 225 W. Raman and transmission spectra reveal that the thickness of the TiO2 thin film deposited at 200 W reaches the maximum when anatase ohase is initially formed.
出处
《半导体技术》
CAS
CSCD
北大核心
2009年第9期868-871,共4页
Semiconductor Technology
基金
湖南省自然科学基金资助项目(07JJ3010)
