Dihydrophenanthrene-based metal-free dyes for highly efficient cosensitized solar cells
Journal
Organic Letters
Journal Volume
14
Journal Issue
14
Pages
3612-3615
Date Issued
2012
Author(s)
Lin, R.Y.-Y.
Yen, Y.-S.
Cheng, Y.-T.
Lee, C.-P.
Hsu, Y.-C.
Chou, H.-H.
Hsu, C.-Y.
Chen, Y.-C.
Lin, J.T.
Ho, K.-C.
Tsai, C.
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.
SDGs
Type
journal article