Patent ID: 7811633

Claim:
A method of manufacturing a light-absorbing layer for a solar cell, comprising of: (a) forming a compound thin film of structural formula BX from a single precursor comprising a Group III element (hereinafter, designated as “B”) and a Group VI element (hereinafter, designated as “X”) on a substrate by metal organic chemical vapor deposition; (b) forming a compound thin film of structural formula A 2 X by supplying a metal from a precursor comprising a Group I metal element (hereinafter, designated as “A”) to the compound thin film of the structural formula BX by metal organic chemical vapor deposition; (c) forming a compound thin film of the structural formula ACX 2 from a single precursor containing comprising a Group III element (hereinafter, designated as “C”, C being smaller in atomic number than B) and a Group VI element (X) on the compound thin film of the structural formula A 2 X by metal organic chemical vapor deposition; and (d) forming a compound thin film of the structural formula ABX 2 from the single precursor comprising a Group III element (B) and a Group VI element (X) on the compound thin film of the structural formula ACX 2 by metal organic chemical vapor deposition, thus achieving the formation of a multilayer thin-film structure of the structural formula ACX 2 /ABX 2 .