Back to results
US 2016/0258809 A1Published application
Mid-infrared photodetectors
AssigneeThe University of Chicago
InventorsPhilippe Guyot-Sionnest, Sean E. Keuleyan, Emmanuel Lhuillier
Life of this patent
Estimating the term…
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.
Claims16
1-33. (canceled)
A photodetector comprising:
- a photoabsorptive layer comprising colloidal inorganic quantum dots, wherein the colloidal inorganic quantum dots are capable of absorbing mid-infrared radiation via intraband absorption to generate a photoresponsive current;
- a first electrical connection and a second electrical connection, wherein the first and second electrical connections bridge the photoabsorptive layer;
- and
- circuitry configured to measure the photoresponsive current.
1 more element
A device comprising:
- a photoabsorptive layer comprising colloidal inorganic quantum dots, wherein the colloidal inorganic quantum dots are capable of absorbing mid-infrared radiation via intraband absorption and emitting photoluminescent radiation in the mid-infrared.
A method of detecting infrared radiation using a photodetector comprising:
- a photoabsorptive layer comprising colloidal inorganic quantum dots, wherein the colloidal inorganic quantum dots are capable of absorbing mid-infrared radiation via intraband absorption to generate a photoresponsive current;
- a first electrical connection and a second electrical connection, wherein the first and second electrical connections bridge the photoabsorptive layer;
- and circuitry configured to measure the photoresponsive current, the method comprising:
- exposing the colloidal inorganic quantum dots to mid-infrared radiation, wherein the colloidal inorganic quantum dots absorb the mid-infrared radiation via intraband transitions and generate a photoresponsive current;
- and
- measuring the photoresponsive current with the circuitry.
3 more elements
Dependencies are inferred from the claim text.