Share Email Print
cover

Proceedings Paper

Feasibility of room-temperature mid-wavelength infrared photodetectors using InAsSb nanostructured photoabsorbers
Author(s): Dingkun Ren; Zixuan Rong; Cao Minh; Alan C. Farrell; Xiao Meng; Diana L. Huffaker
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Compound semiconductor mid-wavelength infrared photodetectors operating at room temperature are the sensors of choice for demanding applications such as thermal imaging, heat-seeking, and spectroscopy. However, those detectors suffer from high dark current and thus normally require additional cooling accessories. In this work, we argue for the fundamental feasibility that by using nanowires coupled with plasmonic nano-antennae as photoabsorbers, the dark current can be largely reduced compared with typical planar devices. To demonstrate the idea, we simulate the device characteristics, such as dark current, responsivity, and detectivity, of InAsSb0.07 nanowire photodetectors, and compare those properties with the best research InAs photovoltaic diodes. The results show that the designed nanowire detectors offer over one-order lower dark current and enable a peak detectivity of 7.0×1010 cm Hz1/2W-1 at 3.5 μm. We believe this work will provide a guidance to the design of nanowire-based MWIR photodetectors and stimulate additional experimental and theoretical research studies.

Paper Details

Date Published: 23 February 2018
PDF: 6 pages
Proc. SPIE 10531, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI, 105310Y (23 February 2018); doi: 10.1117/12.2296791
Show Author Affiliations
Dingkun Ren, Univ. of California, Los Angeles (United States)
Zixuan Rong, Univ. of California, Los Angeles (United States)
Cao Minh, Univ. of California, Los Angeles (United States)
Alan C. Farrell, Univ. of California, Los Angeles (United States)
Xiao Meng, Cardiff Univ. (United Kingdom)
Diana L. Huffaker, Univ. of California, Los Angeles (United States)
Cardiff Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 10531:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI
Laurence P. Sadwick; Tianxin Yang, Editor(s)

© SPIE. Terms of Use
Back to Top