volume 39 issue 1 pages 22-26

Spectra of persistent photoconductivity in InAs/AlSb quantum-well heterostructures

Publication typeJournal Article
Publication date2005-02-17
scimago Q4
wos Q4
SJR0.154
CiteScore0.9
Impact factor0.6
ISSN10637826, 10906479, 17267315, 09412751
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Abstract
Persistent photoconductivity at T = 4.2 K in AlSb/InAs/AlSb heterostructures with two-dimensional (2D) electron gas in InAs quantum wells is studied. Under illumination by IR radiation (ℏω = 0.6–1.2 eV), positive persistent photoconductivity related to the photoionization of deep-level donors is observed. At shorter wavelengths, negative persistent photoconductivity is observed that originates from band-to-band generation of electron-hole pairs with subsequent separation of electrons and holes by the built-in electric field, capture of electrons by ionized donors, and recombination of holes with 2D electrons in InAs. It is found that a sharp drop in the negative photoconductivity takes place at ℏω > 3.1 eV, which can be attributed to the appearance of a new channel for photoionization of deep-level donors in AlSb via electron transitions to the next energy band above the conduction band.
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GOST |
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GOST Copy
Aleshkin V. Spectra of persistent photoconductivity in InAs/AlSb quantum-well heterostructures // Semiconductors. 2005. Vol. 39. No. 1. pp. 22-26.
GOST all authors (up to 50) Copy
Aleshkin V. Spectra of persistent photoconductivity in InAs/AlSb quantum-well heterostructures // Semiconductors. 2005. Vol. 39. No. 1. pp. 22-26.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1134/1.1852637
UR - https://doi.org/10.1134/1.1852637
TI - Spectra of persistent photoconductivity in InAs/AlSb quantum-well heterostructures
T2 - Semiconductors
AU - Aleshkin, V. Ya.
PY - 2005
DA - 2005/02/17
PB - Pleiades Publishing
SP - 22-26
IS - 1
VL - 39
SN - 1063-7826
SN - 1090-6479
SN - 1726-7315
SN - 0941-2751
ER -
BibTex |
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BibTex (up to 50 authors) Copy
@article{2005_Aleshkin,
author = {V. Ya. Aleshkin},
title = {Spectra of persistent photoconductivity in InAs/AlSb quantum-well heterostructures},
journal = {Semiconductors},
year = {2005},
volume = {39},
publisher = {Pleiades Publishing},
month = {feb},
url = {https://doi.org/10.1134/1.1852637},
number = {1},
pages = {22--26},
doi = {10.1134/1.1852637}
}
MLA
Cite this
MLA Copy
Aleshkin, V. Ya.. “Spectra of persistent photoconductivity in InAs/AlSb quantum-well heterostructures.” Semiconductors, vol. 39, no. 1, Feb. 2005, pp. 22-26. https://doi.org/10.1134/1.1852637.