Development of nanoimprinted InP QDs decorated polyaniline solar cell with conversion efficiency 3%

Abstract

Organic-inorganic hybrid materials received considerable attention due to promising industrial applications. The originality of novel chemical recipes, allowing incorporation of well-defined nanoparticle structures into complex hybrid architectures, opens new possibilities for multidisciplinary fields and in particular in optoelectronic devices. The rate of non-radiative recombination and energy transfer through a hybrid inorganic/organic nanocomposite is mainly governing the ability of charge transfer from semiconductor quantum dots to conjugated polymers. Herein, we report that the electron-hole non-radiative recombination in polymer can be constricted by funneling the diffusion of exciton by engineering a proper morphology of a hybrid nanostructure. InP quantum dots have been selected due to their efficient exciton generation and polyaniline as a conjugated polymer for its potency to suppress non-radiative recombination by restraining exciton diffusion. The hole transfer was monitored via bi-exponential kinetic model and time of flight method. The conversion efficiency of the prepared films increased from 0.23% to 3.1% when the thickness is increased from 14 nm to 157 nm. © 2013 Elsevier B.V.