4 June 2015 Nanopillar optical antenna nBn detectors for subwavelength infrared pixels
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The size, weight and power (SWaP) of state of the art infrared focal plane arrays are limited by the pixel size approaching the diffraction limit. We investigate a novel detector architecture which allows improvements in detectivity by shrinking the absorber volume while maintaining high quantum efficiency and wide field of view (FOV). It has been previously shown that the Nanopillar Optical Antenna (NOA) utilizes 3D plasmonic modes to funnel light into a subwavelength nanopillar absorber. We show detailed electro-optical simulations for the NOA-nBn architecture for overcoming generation recombination current with suitable surface passivation to achieve background limited infrared performance.
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Chung Hong Hung, Chung Hong Hung, Pradeep Senanayake, Pradeep Senanayake, Wook-Jae Lee, Wook-Jae Lee, Alan Farrell, Alan Farrell, Nick Hsieh, Nick Hsieh, Diana L. Huffaker, Diana L. Huffaker, } "Nanopillar optical antenna nBn detectors for subwavelength infrared pixels", Proc. SPIE 9481, Image Sensing Technologies: Materials, Devices, Systems, and Applications II, 948109 (4 June 2015); doi: 10.1117/12.2177483; https://doi.org/10.1117/12.2177483

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