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Proceedings Paper

Improvement of power efficiency of polymer solar cell based on P3HT: PCBM blends
Author(s): Weimin Li; Jinchuan Guo; Xiuquan Sun; Bin Zhou
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Paper Abstract

The effect of interlayer on the performance of a poly[2-methoxy-5-(3',7'-dimethylocty)-1,4-phenylenevinylene] (MDMO-PPV)/1-(3-methoxycarbony 1)-propy1-1 phney1-(6-6)C61 (PCBM) composite solar cell device has been reported recently. Herein we report bulk heterojunction organic solar cell with efficiency enhanced by interlayer made from blend film of regioregular poly(3-hexylthiophene)(P3HT) and PCBM. The interlayer, poly(9,9-dioctylfluorene)-co-N-(1,4-butylphenyl)diphenylamine)(TFB), was inserted between the poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonic acid)(PEDOT:PPS) and the active layer. With the interlayer, the efficiency was enhanced due to the increased short circuit current density (Jsc), open circuit voltage (Voc) and fill factor (FF) obtained from testing and calculation. According to the analysis, the interlayer TFB, acting as an effective exciton-blocking layer, prevented the severe quenching of radiative excitons between the interface of PEDOT:PSS. In the study, the interlayer increased Jsc from 0.891 mA/cm2 to 1.025 mA/cm-2, Voc from 0.478 V to 0.526 V, and FF from 0.327 to 0.416, under illumination by white light from a solar simulator with an incident intensity of 80mW/cm2; the power conversion efficiency of the device reached higher value 0.280% comparing with 0.174% with no interlayer.

Paper Details

Date Published: 4 January 2008
PDF: 6 pages
Proc. SPIE 6841, Solid State Lighting and Solar Energy Technologies, 68411G (4 January 2008); doi: 10.1117/12.756572
Show Author Affiliations
Weimin Li, Huazhong Univ. of Science and Technology (China)
Shenzhen Univ. (China)
Jinchuan Guo, Shenzhen Univ. (China)
Xiuquan Sun, Shenzhen Univ. (China)
Bin Zhou, Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 6841:
Solid State Lighting and Solar Energy Technologies
Jinmin Li; Yuwen Zhao; Nuofu Chen; Ling Wu; Yubo Fan; Vladimir M. Andreev; Yong-Hang Zhang; Jai Singh; Michael E. Coltrin, Editor(s)

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