Aqueous colloidal CuInS2 for quantum dot sensitized solar cells

Abstract

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.