Current Photovoltaic Research ISSN:2288-3274(Print) 2508-125X(Online)

We report hybrid solar cells fabricated with polymer/fullerene bulk heterojunction layers that contain inorganic nanocrystals synthesized by in-situ reaction in the presence of polymer chains. The inorganic (cadmium sulfide) nanocrystal (CdS_3NC) was generated by the reaction of cadmium acetate and sulfur by varying the reaction time up to 30 min. The synthesized CdS_3NC showed a rectangular flake shape, while the size of CdS_3NC reached ca. 150 nm when the reaction time was 10 min. The performance of hybrid solar cells with CdS_3NC synthesized for 10 min was better than that of a control device, whereas poor performances were measured for other hybrid solar cells with CdS_3NC synthesized for more than 10 min.