Abstract
2D Photoconductivity Light–matter interaction under different oxygen pressures can reversibly manipulate photoconductivity from surface oxygen vacancies of perovskite stannate semiconductors. In article number 2107650, utilizing a surface-selective photochemical reaction, Junwoo Son and co-workers report that ultraviolet-excited electron–hole pairs of a perovskite compound under low oxygen pressure accelerate the unprecedented formation of spatially confined and optically programmable in-gap states induced by oxygen vacancies at room temperature.
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