期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 95, 期 12, 页码 3465-3471出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2011.08.005
关键词
Phase diagram; Differential scanning calorimetry (DSC); Ternary blends; P3HT/PCBM/PCPDTBT; Organic photovoltaic devices
Ternary blends were recently suggested as a sound approach to increase the short circuit current density of organic solar cells by sensitizing the bulk heterojunction (BHJ) with a further absorber, i.e., a low band gap polymer. Poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-bldithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT) is a suitable candidate as low band gap polymer for ternary blends with poly(3-hexylthiophene) (P3HT) and [6,61-pheny-C-61-butyric acid methyl ester ([60]PCBM) due to its ideal energy level and charge carrier properties. Phase diagrams are common in polymer science to visualize the mixing behavior of multicomponent systems as a function of temperature. In this study, we have used differential scanning calorimetry (DSC) to extract phase diagrams for binary and ternary organic semiconductor blends, and built the corresponding solar cells to analyze correlations between the thermal and the electrical properties of such semiconductor blends. (C) 2011 Elsevier B.V. All rights reserved.
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