Aqueous colloidal CuInS2 for quantum dot sensitized solar cells

We, for the first time, employed aqueous colloidal CuInS2 in quantum dot sensitized solar cells. With heat treatment and introduction of CdS buffer layer, a power conversion efficiency of 1.47% was achieved. The CuInS2 quantum dot made without using organic solvents offers facile fabrication and potential for further photovoltaic application.