Atomically thin semiconductors (TMDCs) can help make light-emitting diodes, lasers, and solar cells operate more efficiently, but they’re difficult to create without defects that dampen their performance. Lab scientists have developed a technique to improve TMDCs’ photoluminescence quantum yield. https://newscenter.lbl.gov/2019/06/17/you-dont-have-to-be-perfect-to-shine-bright/