| 초록 |
Organic photovoltaics(OPVs) using polymer materials have attracted a great deal of interests because of various potential i.e., their cheap and easy fabrication, possibilities for flexible and/or transparent devices, etc. In spite of its critical importance, very little is known as to how these materials pack at the molecular level. This is partly because polymer films usually exhibit amorphous structure, but even for crystalline materials, the thinness of films and their poly-crystallinity make the experimental analyses difficult. Thus, as a complement tool to the experiments, theoretical simulations on the polymer film morphology are demanding. In this talk, recent results of joint theoretical and experimental studies of thiophene-rich polymer films1 and pbTTT: PC71BM bimolecular crystal2 will be presented. References 1. R. Mondal et al., J. Mater. Chem. 20, 5823 (2010) 2. R. Gysel et al., MS in preparation |
