Defect Engineering in β‐Bi2 SeO5 /Bi2 O2 Se Heterostructures for High‐Resolution Phototransistor Arrays
Defect-engineered β-Bi2SeO5/Bi2O2Se heterojunctions suppress vacancies, enable type-II charge separation, and achieve high-responsivity phototransistors and high-resolution arrays for advanced optoelectronics.










