Abstract

The results of a study of multilayer photodiodes based on InAs1- x Sb x solid solutions (0.3 < x <0.4), with a long-wavelength cut-off of λ 0.1 ≈ 11 μm at room temperature are presented. The current-voltage and spectral characteristics of photosensitivity and electroluminescence were analyzed in the temperature range of 80 ÷ 300 K. Experimental samples of photodetectors are characterized by a quantum efficiency of 0.23 at 150 K and a diffusion mechanism of current flow at least in the 200-300 K range. The detectivity of the immersion lens PD at the maximum has values of at least D*8 µm = 8·108 and D* 5.5 µm = 1010 cm·Hz1/2W-1 at 300 and 150 K, respectively.

Details

Title
Long-wave infrared InAs0.6Sb0.4 photodiodes grown onto n-InAs substrates
Author
Klimov, A A 1 ; Kunkov, R E 1 ; Lavrov, A A 1 ; Lebedeva, N M 1 ; Lukhmyrina, T C 1 ; Matveev, B A 2 ; Remennyi, M A 2 

 Ioffe Institute RAS, St. Petersburg 194021, Russia 
 Ioffe Institute RAS, St. Petersburg 194021, Russia; IoffeLED Ltd., St. Petersburg 194064, Russia 
Publication year
2021
Publication date
Mar 2021
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2515165616
Copyright
© 2021. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.