Polar selenide single crystal LiGa0.5In0.5Se2 with a bulk photovoltaic effect for highly sensitive self-driven X-ray detection

This study reveals the intrinsic polarization-induced bulk photovoltaic effect in LiGa 0.5 In 0.5 Se 2 crystals, enabling fabricated self-driven X-ray detectors with high sensitivity (354 μC Gy −1 cm −2 ) and low detection limit (125.5 nGy s −1 ).