Dihydrophenanthrene-Based Metal-Free Dyes for Highly Efficient Cosensitized Solar Cells
作者:Ryan Yeh-Yung Lin、Yung-Sheng Yen、Yung-Tse Cheng、Chuan-Pei Lee、Ying-Chan Hsu、Hsien-Hsin Chou、Chih-Yu Hsu、Yung-Chung Chen、Jiann T. Lin、Kuo-Chuan Ho、Chiitang Tsai
DOI:10.1021/ol301374c
日期:2012.7.20
Metal-free dyes (BP-1 to BP-3) containing a 9,10-dihydrophenanthrene unit in the spacer have been synthesized. The dye with the highest cell efficiency, BP-2, was used in combination with SQ2 for cosensitized DSSCs. The cosensitized DSSC in which the ratio of BP-2 and SQ2 is 8:2 (v/v) has a record high efficiency of 8.14% among cosensitized systems using all metal-free sensitizers. Dye distribution along the TiO2 film depth was analyzed by an Auger electron spectroscopy technique.