Local vibrational modes of the oxygen-vacancy complex in germanium
(2002) In Semiconductors 36(6). p.621-624- Abstract
- Infrared absorption of n- and p-Ge crystals enriched with O-16 and/or O-18 isotopes was studied after irradiation with 6-MeV electrons. Absorption spectra were measured at 10 and 300 K. Along with known bands characteristic of oxygen-containing defects, new lines at 669, 944, and 990 cm(-1) were detected. These bands are annealed at temperatures of 120-140degreesC; the band at 621 cm(-1), previously related to the vacancy-oxygen complex in Ge, is simultaneously annealed. The bands at 621 and 669 cm(-1) showed identical temperatures (10 --> 300 K) and oxygen isotope (O-16 --> O-18) shifts. These bands were found to correspond to various charge states of a defect with an energy level near E-v = 0.25 +/- 0.03 eV. It is assumed that such... (More)
- Infrared absorption of n- and p-Ge crystals enriched with O-16 and/or O-18 isotopes was studied after irradiation with 6-MeV electrons. Absorption spectra were measured at 10 and 300 K. Along with known bands characteristic of oxygen-containing defects, new lines at 669, 944, and 990 cm(-1) were detected. These bands are annealed at temperatures of 120-140degreesC; the band at 621 cm(-1), previously related to the vacancy-oxygen complex in Ge, is simultaneously annealed. The bands at 621 and 669 cm(-1) showed identical temperatures (10 --> 300 K) and oxygen isotope (O-16 --> O-18) shifts. These bands were found to correspond to various charge states of a defect with an energy level near E-v = 0.25 +/- 0.03 eV. It is assumed that such a defect is the vacancy-oxygen complex (A center). The weak bands at 944 and 990 cm(-1) were identified as combinations of asymmetric stretching modes at 621 and 669 cm(-1) with a symmetric one at 320 cm(-1) for neutral and negative charge states of the A center, respectively. (Less)
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https://lup.lub.lu.se/record/335665
- author
- Litvinov, VV ; Murin, LI ; Lindström, Lennart LU ; Markevich, VP and Petukh, AN
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Semiconductors
- volume
- 36
- issue
- 6
- pages
- 621 - 624
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- wos:000176025100003
- scopus:0036624570
- ISSN
- 1063-7826
- DOI
- 10.1134/1.1485658
- language
- English
- LU publication?
- yes
- id
- 628b27e0-ae0a-4bbe-a4c8-79da3ec124cc (old id 335665)
- date added to LUP
- 2016-04-01 16:07:12
- date last changed
- 2022-01-28 17:28:08
@article{628b27e0-ae0a-4bbe-a4c8-79da3ec124cc,
abstract = {{Infrared absorption of n- and p-Ge crystals enriched with O-16 and/or O-18 isotopes was studied after irradiation with 6-MeV electrons. Absorption spectra were measured at 10 and 300 K. Along with known bands characteristic of oxygen-containing defects, new lines at 669, 944, and 990 cm(-1) were detected. These bands are annealed at temperatures of 120-140degreesC; the band at 621 cm(-1), previously related to the vacancy-oxygen complex in Ge, is simultaneously annealed. The bands at 621 and 669 cm(-1) showed identical temperatures (10 --> 300 K) and oxygen isotope (O-16 --> O-18) shifts. These bands were found to correspond to various charge states of a defect with an energy level near E-v = 0.25 +/- 0.03 eV. It is assumed that such a defect is the vacancy-oxygen complex (A center). The weak bands at 944 and 990 cm(-1) were identified as combinations of asymmetric stretching modes at 621 and 669 cm(-1) with a symmetric one at 320 cm(-1) for neutral and negative charge states of the A center, respectively.}},
author = {{Litvinov, VV and Murin, LI and Lindström, Lennart and Markevich, VP and Petukh, AN}},
issn = {{1063-7826}},
language = {{eng}},
number = {{6}},
pages = {{621--624}},
publisher = {{American Institute of Physics (AIP)}},
series = {{Semiconductors}},
title = {{Local vibrational modes of the oxygen-vacancy complex in germanium}},
url = {{http://dx.doi.org/10.1134/1.1485658}},
doi = {{10.1134/1.1485658}},
volume = {{36}},
year = {{2002}},
}