Open AccessEffect of solvent on the performance of poly(2-methoxy-5-(2-ethyl-hexyloxy)-p-phenylene vinylene): N, N′-bis(1-ethylpropyl)-3,4,9,10-perylene bis(tetracarboxyl diimide) solar cells
Author(s) -
Wei Wu,
Yinhua Zhou,
Shizhu Wen,
Liang Han,
Tian Wenjing
Publication year - 2007
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.56.5003
Subject(s) - perylene , diimide , materials science , phenylene , energy conversion efficiency , solar cell , solvent , phase (matter) , organic solar cell , polymer chemistry , chemical engineering , organic chemistry , polymer , optoelectronics , composite material , chemistry , molecule , engineering
The effects of different solvents on the morphology of poly(2-methoxy-5-(2-ethyl-hexyloxy)-p-phenylene vinylene) (MEH-PPV): N,N′-bis(1-ethylpropyl)-3,4,9,10-perylene bis(tetracarboxyl diimide) (EP-PTC) blend film and the performance of solar cells based on MEH-PPV: EP-PTC blend film were studied. The results show that the phase separation in the blend film using non-aromatic solvents is of micron (0.5—5 μm) size, which leads to low charge separation efficiency and consequently the low power conversion efficiency of the assembled solar cell; whereas the phase separation in the blend film using aromatic solvents is of nano-size, which increases the interface area of the two phases obviously and consequently increases the ratio of charge separation significantly. The power conversion efficiency of solar cells based on MEH-PPV: EP-PTC blend film using aromatic solvents is improved 30 times of magnitude compared with that of solar cell based on the blend film using non-aromatic solvents.