Background limited mid-infrared photodetection with photovoltaic HgTe colloidal quantum dots
Abstract
The photovoltaic response of thin films of HgTe colloidal quantum dots in the 3–5 μm range is observed. With no applied bias, internal quantum efficiency exceeding 40%, specific detectivity above 1010 Jones and microseconds response times are obtained at 140 K. The cooled devices detect the ambient thermal radiation. A detector with 5.25 μm cut-off achieves Background Limited Infrared Photodetection at 90 K.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 21, 2015
- Source ID
- 10.1063/1.4938135
Entities
People
- John Andris Roberts
- Philippe Guyot-Sionnest
Organizations
- Army Research Office
- National Science Foundation
- University of Chicago