Se-on-Bi antisite defects in Se-rich Bi₂O₂Se raise carrier effective mass and disrupt the Bi₂O₂ conduction channel, explaining the unconventional mobility increase with carrier concentration and limiting room-temperature mobility.
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Optimizing high-temperature electron mobility in single-crystal Bi$_2$O$_2$Se based on its unconventional dependence on concentration
Se-on-Bi antisite defects in Se-rich Bi₂O₂Se raise carrier effective mass and disrupt the Bi₂O₂ conduction channel, explaining the unconventional mobility increase with carrier concentration and limiting room-temperature mobility.