Effect of solvents on the performance of P3HT:PCBM solar cells

Weimin Li; Jinchuan Guo; Xiuquan Sun; Bin Zhou

doi:10.1117/12.868374

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15 October 2010 Effect of solvents on the performance of P3HT:PCBM solar cells

Weimin Li, Jinchuan Guo, Xiuquan Sun, Bin Zhou

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Proceedings Volume 7847, Optoelectronic Devices and Integration III; 784709 (2010) https://doi.org/10.1117/12.868374
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

Investigating the effects of solvents on the performance of poly(3-hexylthiophene-2,5-diy1) (P3HT):C61-butyric acid methyl ester (PCBM) bulk heterojunction solar cells, we found the short current density (Jsc), fill factor(FF),and power conversion efficiency (η) of a cell with a photo-active layer made using materials dissolved in a higher boiling point solvent to be higher than those of a cell made using the same materials dissolved in a low boiling point solvent. Evaluating the surface morphology, charge mobility, and current-voltage curve of cells made using different solvents, we concluded that the polymer films using a higher boiling point solvent had longtime to self-organize, got a higher degree of crystalline, led to lower device series resistance, thereby increased the short current density (Jsc), fill factor(FF),and power conversion efficiency (η) of the photovoltaic devices.

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Weimin Li, Jinchuan Guo, Xiuquan Sun, and Bin Zhou "Effect of solvents on the performance of P3HT:PCBM solar cells", Proc. SPIE 7847, Optoelectronic Devices and Integration III, 784709 (15 October 2010); https://doi.org/10.1117/12.868374

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