Journal article

Controlling the Light Absorption in a Photodetector Via Nanowire Waveguide Resonances for Multispectral and Color Imaging

Kenneth B Crozier, Kwanyong Seo, Hyunsung Park, Amit Solanki, Shi-Qiang Li

IEEE Journal of Selected Topics in Quantum Electronics | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | Published : 2018


The responsivity spectrum of a photodetector is one of its key specifications. It ultimately originates from the combination of the absorption spectrum of the photosensitive region and the internal quantum efficiency. Many applications of photodetectors would benefit from an improved ability to tailor the responsivity spectrum. This is particularly true for color and multispectral imaging. The absorption spectrum of a bulk (unstructured) semiconductor is fixed however, being determined by its complex refractive index. Here, we review recent work that demonstrates that the absorption spectrum of a photodetector can be controlled via waveguide resonances in semiconductor nanowires. We discuss ..

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University of Melbourne Researchers


Awarded by Australian Research Council

Awarded by National Science Foundation

Awarded by Defense Advanced Research Projects Agency

Funding Acknowledgements

This work was supported in part by the Australian Research Council (DP150103736 and FT140100577), in part by the Victorian Endowment for Science, Knowledge and Innovation, in part by the National Science Foundation (ECCS-1307561), in part by Zena Technologies, and in part by the Defense Advanced Research Projects Agency (N66001-10-1-4008, W911NF-13-2-0015).