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- W4387156799 abstract "Photodetectors that are sensitive in shortwave infrared (SWIR) range (1 um - 2 um) are of significant interest for applications in 3D, night and adverse weather imaging, machine vision, autonomous driving, among others. Currently available technologies in the SWIR rely on costly epitaxial semiconductors that are not monolithically integrated with CMOS electronics. Solution-processed quantum dots have been developed to address this challenge enabling low-cost manufacturing and facile monolithic integration on silicon in a back-end-of-line (BEOL) process. To date, colloidal quantum dot (CQD) materials to access the SWIR have been based on lead sulfide (PbS) and mercury telluride (HgTe) compounds imposing major regulatory concerns and impeding their deployment in consumer electronics. Here we report a novel synthetic method of environmentally friendly silver telluride quantum dots and their application in high-performance SWIR photodetectors. The CQD photodetector stack is entirely based on Restriction of Hazardous Substance (RoHS) compliant materials and exhibits a spectral range from 350 nm - 1600 nm, with room-temperature detectivity of the order 1012 Jones, 3dB bandwidth in excess of 0.1 MHz and linear dynamic range of over 118 dB. We further demonstrate, for the first time, a monolithically integrated SWIR imager that is based on solution-processed, heavy-metal-free materials, paving the way of this technology to consumer electronics market." @default.
- W4387156799 created "2023-09-30" @default.
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- W4387156799 date "2023-09-26" @default.
- W4387156799 modified "2023-09-30" @default.
- W4387156799 title "Heavy-Metal Free Colloidal Quantum Dot Short-Wave Infrared Photodetectors and Image Sensors" @default.
- W4387156799 doi "https://doi.org/10.48550/arxiv.2309.15221" @default.
- W4387156799 hasPublicationYear "2023" @default.
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