Debnath, Radhaballabh and Das, S K (1989) Site-dependent luminescence of Cu+ ions in silica glass. Chemical Physics Letters, 155 (1). pp. 52-58. ISSN 0009-2614

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Absorption and luminescence spectra for interconfigurational 3d10 ↔3d94s transitions of Cu+ ions in a glass of near-pure silica have been studied. The observed dual luminescence characteristics (≈ 433 and ≈ 490 nm) and their excitation dependence have been ascribed to two different Cu+ ion sites in the glass. Correlation of the two excitation spectra with the absorption spectrum allowed us to identify the oxygen coordination of the individual sites as tetragonal (≈ 490 nm) and cubic (≈ 433 nm) in behavior. The long lifetime and bi-exponential behaviour of each emitting state indicated that the emitting states are triplets (3Eg, 3T2g) each of which is split by spin-orbit interactions.

Item Type: Article
Subjects: Glass
Depositing User: Bidhan Chaudhuri
Date Deposited: 05 Dec 2013 09:40
Last Modified: 20 Mar 2016 12:48

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