法布里-珀罗干涉仪
光电二极管
响应度
材料科学
光电子学
光学
红外线的
探测器
光探测
谐振器
光电探测器
比探测率
波长
物理
作者
Wei Yan,Vivek Raj Shresha,Quentin Jeangros,Nima Sefidmooye Azar,Sivacarendran Balendhran,Christophe Ballif,Kenneth B. Crozier,James Bullock
出处
期刊:ACS Nano
[American Chemical Society]
日期:2020-09-21
卷期号:14 (10): 13645-13651
被引量:40
标识
DOI:10.1021/acsnano.0c05751
摘要
Thin two-dimensional (2D) material absorbers have the potential to reduce volume dependent thermal noise in infrared detectors.However, any reduction in noise must be balanced against lower absorption from the thin layer, which necessitates advanced optical architectures.Such architectures can be particularly effective for applications that require detection only within a specific narrow wavelength range.This study presents a Fabry-Pérot cavity enhanced bP/MoS2 mid-wave infrared (MWIR) photodiode.This simple structure enables tunable narrow-band (down to 0.42 µm full-widthhalf-maximum) photodetection in the 2-4 µm range by adjusting the thickness of the Fabry-Pérot cavity resonator.This is achieved whilst maintaining room temperature performance metrics comparable to previously reported 2D MWIR detectors.Zero bias specific detectivity and responsivity values of 1.7 × 10 9 cm Hz 1/2 W -1 and 0.11 A W -1 at λ = 3.0 µm are measured, with rise/fall times around 7 µs.These results introduce a promising family of 2D detectors with applications in MWIR spectroscopy.
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