Thin film solar cell having homojunction and manufacturing method thereof

• Main Authors: YANG, CHIEN-PANG, LU, WEI-LUN
• Format: Patent
• Language: Chinese; English
• Published: 01.02.2010
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

This invention discloses a thin film solar cell having homojunction and manufacturing method thereof. The thin film solar cell comprises a substrate, a back electrode layer, an absorber layer, a buffer layer, and a transparent electrode layer which are stacked in order. Wherein the absorber layer has a chalcopyrite structure which is formed of a group I-III-VI compound, the buffer layer is formed of a group II-VI compound, a group III-VI compound or a group II-III-VI compound, and the absorber layer and the buffer layer are respectively and simultaneously formed by means of depositing precursors thereof and thermal treatment therein so that a homogenous junction is formed between the absorber layer and the buffer layer.