Open AccessEffect of mixed solvents on P3HT:PCBM based solar cell
Author(s) -
Shaopeng Yang,
Li Na,
Guang Li,
Jing Shi,
Xiaowei Li,
Guangsheng Fu
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.014702
Subject(s) - chlorobenzene , energy conversion efficiency , materials science , short circuit , solar cell , solvent , chloroform , acceptor , chemical engineering , absorption spectroscopy , open circuit voltage , polymer solar cell , absorption (acoustics) , current density , organic solar cell , analytical chemistry (journal) , optoelectronics , voltage , organic chemistry , chemistry , optics , composite material , polymer , catalysis , engineering , physics , quantum mechanics , condensed matter physics
We fabricate solar cells based on blends of poly(3-hexylthiophene) (P3HT) as the donor and [6, 6]-phenyl-C60-butyric acid methyl ester (PCBM) as the acceptor using various solvents such as pure chlorobenzene (CB), pure chloroform (CF) and mixed solvent (CB/CF) with different ratios.We investigate the influences of various solvents and mixed solvents with different ratios on the performances of solar cells. The results show that for the device by using a mixed solvent of CB/CF (3/1), its UV-Vis absorption spectrum and external quantum efficiency show a red-shift and its AFM image shows finely structured phase segregation between P3HT and PCBM. We obtain an open circuit voltage of 0.61 V, short circuit current density of 9 mA/cm2, fill factor of 57.9%, and power conversion efficiency of 3.2% under irratiation of light with a strength of 100 mW/cm2.