Prospects of sprayed CZTS thin film solar cells from the perspective of material characterization and device performance

Abstract

This thesis is devoted to the development of thin film solar cells using a relatively new, rapidly developing quaternary semiconducting material (viz., Cu2ZnSnS4) through spray technique. This semiconductor, commonly known as CZTS, is closely related to the family of materials that have been used for the development of solar cell applications [1]. It is a compound semiconductor made of copper, zinc, tin and sulfur, which are sufficiently abundant elements; more over none of them is harmful to the environment. At first the influence of various spray parameters like substrate temperature, spray rate, precursor ratio etc., on the opto-electronic properties of CZTS films are studied in detail. Then the fabrication of CZTS/In2S3 heterojunctions and various ways to improve the performance parameters are discussed.