Abstract
Results of experimental investigations into the spectral dependences of the light absorption coefficient of an undoped Bi 12GeO 20 crystal annealed in vacuum at a temperature of 650°S and subsequently annealed in the air atmosphere at temperatures in the range T AA = 315-590°S are presented for the spectral range 400-1100 nm at room temperature. It is established that the optical absorption of the crystal after temperature annealing in vacuum increases in the entire examined spectral range. Subsequent annealing in air leads to gradual restoration of the initial impurity absorption spectrum in the range from 530 to 1100 nm. The wide band that can be caused by oxygen vacancies is observed in the spectrum of absorption changes induced by annealing in vacuum.
| Original language | English |
|---|---|
| Pages (from-to) | 444-448 |
| Number of pages | 5 |
| Journal | Russian Physics Journal |
| Volume | 55 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Sep 2012 |
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Keywords
- bismuth germanium oxide
- impurity absorption
- optical absorption
- vacuum annealing
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Spectral dependences of the optical absorption in bismuth germanium oxide crystals annealed in vacuum. / Kisteneva, M. G.; Akrestina, A. S.; Shandarov, S. M.; Mandel, A. E.; Grebenchukov, A. N.; Pozdeeva, É V.; Kargin, Yu F.
In: Russian Physics Journal, Vol. 55, No. 4, 01.09.2012, p. 444-448.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spectral dependences of the optical absorption in bismuth germanium oxide crystals annealed in vacuum
AU - Kisteneva, M. G.
AU - Akrestina, A. S.
AU - Shandarov, S. M.
AU - Mandel, A. E.
AU - Grebenchukov, A. N.
AU - Pozdeeva, É V.
AU - Kargin, Yu F.
PY - 2012/9/1
Y1 - 2012/9/1
N2 - Results of experimental investigations into the spectral dependences of the light absorption coefficient of an undoped Bi 12GeO 20 crystal annealed in vacuum at a temperature of 650°S and subsequently annealed in the air atmosphere at temperatures in the range T AA = 315-590°S are presented for the spectral range 400-1100 nm at room temperature. It is established that the optical absorption of the crystal after temperature annealing in vacuum increases in the entire examined spectral range. Subsequent annealing in air leads to gradual restoration of the initial impurity absorption spectrum in the range from 530 to 1100 nm. The wide band that can be caused by oxygen vacancies is observed in the spectrum of absorption changes induced by annealing in vacuum.
AB - Results of experimental investigations into the spectral dependences of the light absorption coefficient of an undoped Bi 12GeO 20 crystal annealed in vacuum at a temperature of 650°S and subsequently annealed in the air atmosphere at temperatures in the range T AA = 315-590°S are presented for the spectral range 400-1100 nm at room temperature. It is established that the optical absorption of the crystal after temperature annealing in vacuum increases in the entire examined spectral range. Subsequent annealing in air leads to gradual restoration of the initial impurity absorption spectrum in the range from 530 to 1100 nm. The wide band that can be caused by oxygen vacancies is observed in the spectrum of absorption changes induced by annealing in vacuum.
KW - bismuth germanium oxide
KW - impurity absorption
KW - optical absorption
KW - vacuum annealing
UR - http://www.scopus.com/inward/record.url?scp=84866463907&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866463907&partnerID=8YFLogxK
U2 - 10.1007/s11182-012-9831-4
DO - 10.1007/s11182-012-9831-4
M3 - Article
VL - 55
SP - 444
EP - 448
JO - Russian Physics Journal
JF - Russian Physics Journal
SN - 1064-8887
IS - 4
ER -