Two-dimensional Bi₂O₂Se with unique crystal structure and ultrahigh carrier mobility has been catching widespread attention and demonstrated great potential in nanoelectronic and optoelectronic devices. The existence of lattice oxygen ensures its ultrahigh stability at ambient environment and make it promising for high-temperature applications. Here, through systematical characterizations, the high air stability of Bi₂O₂Se nanosheets at temperatures up to 250 °C is evidently demonstrated. The fabricated photodetectors based on the as-grown Bi₂O₂Se nanosheets show high stability, high sensitivity (∼5 319 A/W at 250 °C with a bias of 1 V) and fast response (several milliseconds) from room temperature to 250 °C. Besides, it was observed that the devices also show good photoresponse covering UV, visible and infrared regions at high temperatures. These results suggest their promising high-performance applications serving under harsh conditions.

二维Bi ₂ O ₂ Se以其独特的晶体结构和超高的载流子迁移率而受到广泛关注，并在纳米电子和光电器件中展现出巨大的潜力。晶格氧的存在确保了其在环境环境下的超高稳定性，使其在高温应用中具有广阔的前景。_{在这里，通过系统表征，明显证明了 Bi 2} O ₂ Se 纳米片在高达 250 °C 的温度下具有高空气稳定性。基于生长的 Bi ₂ O ₂ Se 纳米片制造的光电探测器表现出高稳定性、高灵敏度（250 °C 时~5 319 A/W，偏置为 1 V）以及从室温到室温的快速响应（几毫秒）。 250℃。此外，还观察到该器件在高温下还表现出覆盖紫外、可见光和红外区域的良好光响应。这些结果表明它们在恶劣条件下具有良好的高性能应用前景。