Luminescence of localized states in silicon dioxide glass. A short review

Trukhin, A.N.

doi:10.1016/j.jnoncrysol.2010.10.041

Cited by 28 publications

(18 citation statements)

References 37 publications

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“…Forming an oxygen deficient site, such Se atom can have four oxygen bonds along with two unshared electrons [20]. Similar case was observed for dense SiO 2 modifications where ODC-like luminescence was formed by defective octahedral motifs [22]. So we suggest the ¼ € Se ¼ defect as a model for the possible SeODC.…”

Section: Discussionsupporting

confidence: 76%

Photoluminescence of Se-related oxygen deficient center in ion-implanted silica films

Zatsepin

Бунтов

Пустоваров

et al. 2013

Journal of Luminescence

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a b s t r a c tThe results of low-temperature time-resolved photoluminescence (PL) investigation of thin SiO 2 films implanted with Se + ions are presented. The films demonstrate an intensive PL band in the violet spectral region, which is attributed to the triplet luminescence of a new variant of selenium-related oxygen deficient center (ODC). The main peculiarity of the defect energy structure is the inefficient direct optical excitation. Comparison with spectral characteristics of isoelectronic Si-, Ge-and SnODCs show that the difference in electronic properties of the new center is related to ion size factor. It was established that the dominating triplet PL excitation under VUV light irradiation is related to the energy transfer from SiO 2 excitons. A possible model of Se-related ODC is considered.

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Section: Discussionsupporting

confidence: 76%

Photoluminescence of Se-related oxygen deficient center in ion-implanted silica films

Zatsepin

Бунтов

Пустоваров

et al. 2013

Journal of Luminescence

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“…curves 0* and 1*). The broad luminescence band of λ max ≈ 550 nm observed for this film is not likely to be a superposition of the T 1 → S 0 bands, belonging to modified ODCs, because in the LESs (Figure 4a, curves 1 and 1*) 17 Allowing for these facts, it is natural to suppose that in our case analogous situation takes place.…”

Section: Discussionmentioning

confidence: 79%

Influence of Gold Nanoparticles on Luminescence of Eu³⁺ Ions Sensitized by Structural Defects in Germanate Films

et al. 2016

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This investigation shows new possibilities of gold nanoparticles using for rise of Ln 3+ ions luminescence in oxide matrixes at ultra violet synhrotron's excitation on example of germanate films doped with Eu and Au. It has been established that formation of gold nanoparticles (AuNPs) in such films leads to the enhancement of the Eu 3+ ions luminescence intensity by many times at excitation in broad absorption bands having λ max about 120 and 180 nm. The discovered effect is explained by joint influence of the following factors: (1) rise in the nonbridging oxygen hole centers (NBOHC) concentration as a result of breakage of the O−Eu bonds in the ≡Ge−О−Eu= bridges by the forming AuNPs; (2) nonradiative transfer of excitations from excitons to these centers; (3) effective sensitization of the Eu 3+ ions luminescence by the centers via the charge transfer (CT) state of the O 2− +Eu 3+ complexes; (4) increase in the optical path of the exciting radiation due to the intensification of light scattering by the AuNPs, and, possibly,(5) promoting by the AuNPs of excitations transfer in the exciton−NBOHC−(O 2− +Eu 3+ ) system in the nanoparticles field as well as weakening of reverse passivation of the hole centers by the hydrogen atoms formed on the breakage of the end OH − groups under the action of UV radiation.

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“…Table 3 shows the optical properties calculated from two clusters with ODC(II) defects by TDDFT-B3LYP, neglecting other paramagnetic defects. s 0 → s 1 transition energies of the SiO 2 with ODC(II) defects were calculated by Trukhin [10], Lü et al [8], and Adelstein et al [7] using different cluster models and different levels of theory. These studies yield almost the same calculated results concerning s 0 → s 1 .…”

Section: Electronic Structure Properties and Optical Properties Of Odmentioning

confidence: 99%

“…Up to now, a large number of experimental and theoretical studies have been devoted to the characterization of the structure of point defects in -quartz [1][2][3]. Among many defect centers in -quartz, oxygen-deficiency centers (ODCs) are believed to play a vital role in the irradiation process and subsequent photostructural changes [4] and thus have attracted much attention in research [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Structural and Optical Properties of α-Quartz Cluster with Oxygen-Deficiency Centers

Yin

Chen

Yang

et al. 2018

Advances in Condensed Matter Physics

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The structural and optical properties of -quartz cluster with oxygen-deficiency centers (ODCs) defects have been investigated based on the density functional theory (DFT). For cluster models with ODC(I) defect, with the increasing of cluster size and shape, the equilibrium length of Si-Si bond decreases. The excitation peaks of cluster models with ODC(I) defect are from 6.87 eV to 7.39 eV, while the excitation peaks of cluster models with ODC(II) defect are from 5.20 eV to 5.47 eV. We also study the interconversion between ODCs (≡Si-Si≡ bond and divalent Si) induced by UV irradiation. Our study predicted the existence of a metastable structure of ODC(I) for the first time in literature. Our results are in good agreement with the previous results and provide strong theoretical support to the viability of the processes.

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Luminescence of localized states in silicon dioxide glass. A short review

Cited by 28 publications

References 37 publications

Photoluminescence of Se-related oxygen deficient center in ion-implanted silica films

Photoluminescence of Se-related oxygen deficient center in ion-implanted silica films

Influence of Gold Nanoparticles on Luminescence of Eu³⁺ Ions Sensitized by Structural Defects in Germanate Films

Structural and Optical Properties of α-Quartz Cluster with Oxygen-Deficiency Centers

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Luminescence of localized states in silicon dioxide glass. A short review

Cited by 28 publications

References 37 publications

Photoluminescence of Se-related oxygen deficient center in ion-implanted silica films

Photoluminescence of Se-related oxygen deficient center in ion-implanted silica films

Influence of Gold Nanoparticles on Luminescence of Eu3+ Ions Sensitized by Structural Defects in Germanate Films

Structural and Optical Properties of α-Quartz Cluster with Oxygen-Deficiency Centers

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Influence of Gold Nanoparticles on Luminescence of Eu³⁺ Ions Sensitized by Structural Defects in Germanate Films