Site-selective study of the 1.8 eV luminescence band in glassy GeO2

L. Skuja; H. Hosono; M. Mizuguchi; B. Güttler; A. Silin

doi:10.1016/S0022-2313(99)00364-6

Site-selective study of the 1.8 eV luminescence band in glassy GeO₂

L. Skuja^*
, H. Hosono
, M. Mizuguchi
, B. Güttler
, A. Silin

^*Corresponding author for this work

Laboratory of Optical Materials, Institute of Solid State Physics

Institute of Science Tokyo
Physikalisch-Technische Bundesanstalt

Research output: Contribution to journal › Conference article › peer-review

20 Citations (Scopus)

Abstract

Photoluminescence (PL) band around 1.8 eV in γ-irradiated glassy GeO₂ was studied by site-selective excitation at 1.8 eV. At T < 50 K a vibronic line at 701 cm^-1 appears in the emission spectra. This line is similar to the 890 cm^-1 local vibration seen in the site-selective emission spectra of the 1.9 eV PL center in glassy SiO₂, which is attributed to non-bridging oxygen hole center (NBOHC, a dangling oxygen bond). The vibrational frequencies scale well with the reduced mass and force constants of Si-O and Ge-O quasimolecules. This finding confirms the similarity between both centers and the assignments of the 1.8 eV PL center in GeO₂ and 1.9 eV PL center in SiO₂ to NBOHC. However, NBOHC is not the sole cause of the PL of GeO₂ in the 1.8 eV region and different defect centers may contribute too.

Original language	English
Pages (from-to)	699-701
Number of pages	3
Journal	Journal of Luminescence
Volume	87
DOIs	https://doi.org/10.1016/S0022-2313(99)00364-6
Publication status	Published - May 2000
Event	International Conference on Luminescence and Optical Spectroscopy of Condensed Matter (ICL'99) - Osaka, Jpn Duration: 23 Aug 1999 → 27 Aug 1999

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title = "Site-selective study of the 1.8 eV luminescence band in glassy GeO2",

abstract = "Photoluminescence (PL) band around 1.8 eV in γ-irradiated glassy GeO2 was studied by site-selective excitation at 1.8 eV. At T < 50 K a vibronic line at 701 cm-1 appears in the emission spectra. This line is similar to the 890 cm-1 local vibration seen in the site-selective emission spectra of the 1.9 eV PL center in glassy SiO2, which is attributed to non-bridging oxygen hole center (NBOHC, a dangling oxygen bond). The vibrational frequencies scale well with the reduced mass and force constants of Si-O and Ge-O quasimolecules. This finding confirms the similarity between both centers and the assignments of the 1.8 eV PL center in GeO2 and 1.9 eV PL center in SiO2 to NBOHC. However, NBOHC is not the sole cause of the PL of GeO2 in the 1.8 eV region and different defect centers may contribute too.",

author = "L. Skuja and H. Hosono and M. Mizuguchi and B. G{\"u}ttler and A. Silin",

year = "2000",

month = may,

doi = "10.1016/S0022-2313(99)00364-6",

language = "English",

volume = "87",

pages = "699--701",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

note = "International Conference on Luminescence and Optical Spectroscopy of Condensed Matter (ICL'99) ; Conference date: 23-08-1999 Through 27-08-1999",

}

TY - JOUR

T1 - Site-selective study of the 1.8 eV luminescence band in glassy GeO2

AU - Skuja, L.

AU - Hosono, H.

AU - Mizuguchi, M.

AU - Güttler, B.

AU - Silin, A.

PY - 2000/5

Y1 - 2000/5

N2 - Photoluminescence (PL) band around 1.8 eV in γ-irradiated glassy GeO2 was studied by site-selective excitation at 1.8 eV. At T < 50 K a vibronic line at 701 cm-1 appears in the emission spectra. This line is similar to the 890 cm-1 local vibration seen in the site-selective emission spectra of the 1.9 eV PL center in glassy SiO2, which is attributed to non-bridging oxygen hole center (NBOHC, a dangling oxygen bond). The vibrational frequencies scale well with the reduced mass and force constants of Si-O and Ge-O quasimolecules. This finding confirms the similarity between both centers and the assignments of the 1.8 eV PL center in GeO2 and 1.9 eV PL center in SiO2 to NBOHC. However, NBOHC is not the sole cause of the PL of GeO2 in the 1.8 eV region and different defect centers may contribute too.

AB - Photoluminescence (PL) band around 1.8 eV in γ-irradiated glassy GeO2 was studied by site-selective excitation at 1.8 eV. At T < 50 K a vibronic line at 701 cm-1 appears in the emission spectra. This line is similar to the 890 cm-1 local vibration seen in the site-selective emission spectra of the 1.9 eV PL center in glassy SiO2, which is attributed to non-bridging oxygen hole center (NBOHC, a dangling oxygen bond). The vibrational frequencies scale well with the reduced mass and force constants of Si-O and Ge-O quasimolecules. This finding confirms the similarity between both centers and the assignments of the 1.8 eV PL center in GeO2 and 1.9 eV PL center in SiO2 to NBOHC. However, NBOHC is not the sole cause of the PL of GeO2 in the 1.8 eV region and different defect centers may contribute too.

UR - https://www.scopus.com/pages/publications/0033728333

U2 - 10.1016/S0022-2313(99)00364-6

DO - 10.1016/S0022-2313(99)00364-6

M3 - Conference article

AN - SCOPUS:0033728333

SN - 0022-2313

VL - 87

SP - 699

EP - 701

JO - Journal of Luminescence

JF - Journal of Luminescence

T2 - International Conference on Luminescence and Optical Spectroscopy of Condensed Matter (ICL'99)

Y2 - 23 August 1999 through 27 August 1999

ER -

Site-selective study of the 1.8 eV luminescence band in glassy GeO₂

Abstract

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