Long-Wave Infrared Photodetectors Based on 2D Platinum Diselenide atop Optical Cavity Substrates
Nima Sefidmooye Azar, James Bullock, Vivek Raj Shrestha, Sivacarendran Balendhran, Wei Yan, Hyungjin Kim, Ali Javey, Kenneth B Crozier
ACS NANO | AMER CHEMICAL SOC | Published : 2021
Long-wave infrared (LWIR) photodetection is of high technological importance, having a wide range of applications that include thermal imaging and spectroscopy. Two-dimensional (2D) noble-transition-metal dichalcogenides, platinum diselenide (PtSe2) in particular, have recently shown great promise for infrared detection. However, previous studies have mainly focused on wavelengths up to the short-wave infrared region. In this work, we demonstrate LWIR photodetectors based on multilayer PtSe2. In addition, we present an optical cavity substrate that enhances the light-matter interaction in 2D materials and thus their photodetection performance in the LWIR spectral region. The PtSe2 photocondu..View full abstract
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Awarded by Defense Advanced Research Projects Agency
Awarded by Australian Research Council
This work was supported by the Defense Advanced Research Projects Agency (HR0011-16-1-0004) and by the Australian Research Council (DP180104141 and DP210103428). It was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF).