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Correlation Between Crystal Structure and Properties in Polymer Solar Cells  

Kim, Jung Yong (Department of Chemical Engineering and Materials Science, University of Minnesota)
Publication Information
Korean Chemical Engineering Research / v.46, no.1, 2008 , pp. 88-93 More about this Journal
Abstract
The bulk-heterojunction polymer solar cell based on regioregular P3HT (poly(3-hexylthiophene)) and PCBM (methanofullerene [6,6]-phenyl $C_{61}$-butyric acid methyl ester) was fabricated. Annealing effects on the crystal structure of polymer-fullerene blends as well as the UV-VIS electronic absorption spectroscopy were investigated. The correlation between the crystal organization of bulk-heterojunction film and the power conversion efficiency of solar cell was studied. Resultantly, the polymer solar cell annealed on $150^{\circ}C$ for 30 min, showed both the enhanced molecular interactions and the optimized crystal structure and displayed the power conversion efficiency of 3.2 %.
Keywords
Buk-Heterojunction; Polymer Solar Cell; P3HT; PCBM; XRD;
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