10.9-EFFICENT CIGS-BASED SOLAR CELLS PREPARED FROM ELECTRODEPOSITED CIGS/Cu/In PRECURSOR FILMS

摘要

CIGS-based solar cells are fabricated directly from electrodeposited CIGS/Cu/In precursor films.Electrodeposited precursor films are fabricated by a three-stage electrodeposition process in which: (a) CIGS iselectrodeposited in the first stage, (b) Cu is electrodeposited in the second stage, and (c) an In layer is deposited in thefinal third stage. All films are electrodeposited from an aqueous-based solution at room temperature in a twoelectrodecell configuration, with platinum gauze as the counter electrode and a glass substrate as the workingelectrode. The substrate is DC-sputtered with about 1 μm of Mo. The electrodeposited films are selenized at hightemperature (～550oC) to obtain a 10.9%-efficient device.