The optical properties of nanocomposite MEH-PPV:ZnO thin films

Recently, the performance of optoelectronics devices such as organic light emitting diodes and organic solar cells has been enhanced by the incorporation of inorganic semiconductors to form hybrid organic-inorganic. This approach can take advantages of the beneficial properties of both materials: superior optoelectronic properties of conjugated organic polymers and high electron mobility of inorganic semiconductors [1]. The objective of this paper is to study the effect of different weight percentage of ZnO nanoparticles on the optical properties of the nanocomposite MEH-PPV:ZnO thin films. The samples were prepared using sol-gel spin coating method on glass substrates. Current-voltage properties of the thin films were investigated. Conductivity of the thin films is plotted and shown in Fig.1. The conductivity of the samples increases with the increment of the ZnO nanoparticles except for sample with 10wt% of the ZnO in the nanocomposite thin films.