CIGS nanostructure thin-film photovoltaic battery and preparation method thereof

• Main Authors: LI LIQIANG, LI MING, REN SHAN, LIU ZHUFENG, HONG LAN
• Format: Patent
• Language: Chinese; English
• Published: 08.08.2012
• Subjects: BASIC ELECTRIC ELEMENTS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; 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; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention discloses a CIGS nanostructure thin-film photovoltaic battery and a preparation method thereof. The method is on the basis of cuprous sulfide or copper sulphide nanowire array prepared by gas solid reaction method, and combines electrochemical deposition method and heat treatment. Components, phase structure and band structure of the nanowire array in a semiconductor can be changed by changing sediment method, ion kinds in an electrolyte, sequences of ion deposition and post treatment in electrochemical deposition, thereby nanowire array solar energy photovoltaic battery of different components is prepared. The battery can reduce reflection of light, increase absorption of light, and simultaneously increase probability of generation of carriers, and reduce probability of recombination of cavities and electrons, realizing great enhancement of the photoelectric conversion efficiency. The preparation method in the invention has the advantages of simple method, low cost and low requirements of equip