title: Dihydrophenanthrene-based metal-free dyes for highly efficient cosensitized solar cells.
abstract: 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.
authors: Institute of Chemistry, Academia Sinica , Nankang, Taipei 11529, Taiwan, Department of Chemical Engineering, National Taiwan University , Taipei, 10617, Taiwan, Department of Chemistry, Chinese Culture University , Taipei, Taiwan, and Institute of Polymer Science and Engineering, National Taiwan University , Taipei 10617, Taiwan.
authors: Ryan Yeh-Yung
authors: RY
authors: Lin
authors: Yung-Sheng
authors: YS
authors: Yen
authors: Yung-Tse
authors: YT
authors: Cheng
authors: Chuan-Pei
authors: CP
authors: Lee
authors: Ying-Chan
authors: YC
authors: Hsu
authors: Hsien-Hsin
authors: HH
authors: Chou
authors: Chih-Yu
authors: CY
authors: Hsu
authors: Yung-Chung
authors: YC
authors: Chen
authors: Jiann T
authors: JT
authors: Lin
authors: Kuo-Chuan
authors: KC
authors: Ho
authors: Chiitang
authors: C
authors: Tsai