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Effect 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
作者: Wu WC (Wu Wei-Cai), Zhou YH (Zhou Yin-Hua), Wen SP (Wen Shan-Peng), Han L (Han Liang), Tian WJ (Tian Wen-Jing)
來源出版物: ACTA PHYSICA SINICA    卷: 56    期: 8    頁: 5003-5008    出版年: AUG 2007

摘要: 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 mu m) 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.

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