This report is the first Knowledge Sharing report for UNSW’s Development of Beyond 20% Efficiency Kesterite (CZTSSe) Solar Cells project.
Report extract
The formation of intrinsic defects and defect clusters in CZTSSe are fund to be governed by the local chemical environment at the time when the synthesis of CZTSSe initiates. By engineering the local chemical environment (including the oxidation states of precursor elements and the local chemical composition), the formation of detrimental defects such as SnZn antisites can be effectively suppressed, and the desired shallow acceptors VCu can be created, thus significantly improving the optoelectronic properties of CZTSSe absorber and corresponding power conversion efficiencies.