Abstract
We report on HgTe colloidal-based quantum-dot mid-infrared (IR) photodetectors. We demonstrate tuning the cutoff wavelength of this detector from the near IR up to 7 μm. Responsivity values of films of HgTe nanoparticles a few hundred nanometers thick are in the 100 mA W−1 range even at room temperature. The detectivity of this film is limited by large 1/f noise. Time responses as short as 200 ns are achieved.
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Lhuillier, E., Keuleyan, S., Liu, H. et al. Colloidal HgTe Material for Low-Cost Detection into the MWIR. J. Electron. Mater. 41, 2725–2729 (2012). https://doi.org/10.1007/s11664-012-2006-9
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DOI: https://doi.org/10.1007/s11664-012-2006-9