Abstract
Focused on phase separation and morphologies of polymer poly [2-methoxy-5-(2'-ethyl) hexoxy-1,4-phenylenevinylene] (MEH-PPV) and [6,6]-phenylC71-butyric acid methyl ester (PC70BM) nano composite, we studied the effect of organic solvent on the optical and morphological properties of these blends. The MEH-PPV: PC70BM films was prepared using three different solvent; Tetrahydrofuran (THF), Chlorobenzene (CB) and Toluene. On the other hand, the effect of 1-8 octanedithiol additives is also studied with the same different solvents. These blend films are characterized by photoluminescence spectroscopy, UV-Vis absorption spectroscopy and atomic force microscopy (AFM). The photoluminescence results show that the THE solvent provide the better charge transfer. In a morphological view point, the phase segregation was clearly appearing by the addition of the additive on the surface of the blend films. (C) 2017 Elsevier B.V. All rights reserved.