Mid-infrared photodetectors
AssigneeThe University of Chicago
InventorsPhilippe Guyot-Sionnest, Sean E. Keuleyan, Emmanuel Lhuillier
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Abstract
Nanoparticles, methods of manufacture, devices comprising the nanoparticles, methods of their manufacture, and methods of their use are provided herein. The nanoparticles and devices having photoabsorptions in the range of 1.7 μm to 12 μm and can be used as photoconductors, photodiodes, phototransistors, charge-coupled devices (CCD), luminescent probes, lasers, thermal imagers, night-vision systems, and/or photodetectors.
Claims23
A method comprising:
- reacting a mercury(II) salt in an oleylamine and elemental tellurium dissolved in a trialkylphosphine at a temperature in the range from 70 to 100° C., thereby forming HgTe nanoparticles;
- and
- isolating the HgTe nanoparticles,
- wherein the nanoparticles exhibit an absorption edge above 3 μm and a photoluminescence peak at a wavelength in a range of 1.7 μm to 12 μm.
A film of HgTe nanoparticle that exhibits an absorption edge above 3 μm at a temperature of 300 K, and a photoluminescence peak at a wavelength in a range from 2.5 μm to 12 μm.
Dependencies are inferred from the claim text.