SnS FORMING METHOD FOR SnS FILM AND MANUFACTURING METHOD FOR SOLAR CELL BY USING THE FORMING METHOD

摘要

The present invention relates to a method of forming a chalcogenide compound thin film suitable for a light absorbing layer of a solar cell, comprising the following steps of: preparing precursor liquid comprising an Sn precursor material and an S precursor material; applying the precursor liquid to form a precursor film; and heat-treating the precursor film, wherein the Sn precursor material and the S precursor material are in a liquid state. The present invention provides a method of forming a chalcogenide compound thin film without a sulfidation heat treatment process by using precursor materials in a liquid state, thereby providing an excellent effect of forming a high-quality SnS thin film with a process suitable for mass production at low cost. Also, by forming a light absorbing layer with a process suitable for mass production, it is possible to manufacture a chalcogenide compound thin film solar cell at low cost.