Using fundamental electronic structure properties as an indicative of defect tolerance, a broad class of semiconductors containing partially oxidized cations can be identified, as well as several specific instances that can share these properties. These defect tolerant semiconductors can make a high-performance optoelectric device, for example, photovoltaic cells.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with Government support under Contract No. DE-AC36-08GO28308 awarded by the Department of Energy. The Government has certain rights to the invention.