热辐射计
材料科学
光电探测器
光探测
红外线的
光电子学
光学
夜视
化学气相沉积
热稳定性
宽带
探测器
物理
量子力学
作者
Suofu Wang,Hongtao Liu,Zhangyu Cao,Xiuxiu Wang,Li Zhang,Jingzu Ding,Yunzhou Xue,Tao Han,Feng Li,Lei Shan,Mingsheng Long
标识
DOI:10.1002/adom.202300382
摘要
Abstract Ambient temperature long‐wavelength infrared (LWIR) photodetection has many critical applications ranging from thermal imaging and optical communications to night vision cameras. Currently, high performance, low cost, air stability, and ultra‐broadband response still constitute challenges. Here, the study demonstrates a high‐performance uncooled LWIR photodetector using 2D hexagonal α ‐Fe 2 O 3 single crystal nanoflakes, which are synthesized via chemical vapor deposition. The 2D α ‐Fe 2 O 3 photodetector realizes high specific detectivity ( D * ) of 3.28×10 9 cmHz 1/2 W −1 and very low noise equivalent power of 8.94×10 −14 W Hz −1/2 with 10.6 µm laser. The photo bolometer effect is responsible for the photoresponse in the infrared range with a large temperature coefficient resistance of −241.2% K −1 . This study shows a new type of potential broadband response material and provides a promising LWIR optoelectrical device with good air stability.
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