The effect of thermal annealing on luminescence centres in Ge-silica fibres
Kirsh, Y., Townsend, P.D. and Townsend, J.E. (1992) The effect of thermal annealing on luminescence centres in Ge-silica fibres. Journal of Thermal Analysis and Calorimetry, 37, (6), 1153-1160. (doi:10.1007/BF01913851).
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The radioluminescence spectrum of Ge-silica fibres doped with Nd is found to change by the effect of pre-irradiation and thermal annealing. Originally the spectrum consists of a gaussian band centred near 3.1 eV (400 nm). Following the irradiation and heating an additional asymmetric band appears near 2.4 eV (520 nm). On top of this band there is a line spectrum, which can be ascribed to internal transitions of the Nd3+. On the basis of the spectroscopic data and previous results of thermoluminescence measurements, a model is suggested for the luminescence and the effect of the thermal annealing. The blue and green bands are ascribed to an O2' molecular ion and a hole centre near the Nd3+ ion, respectively.
|Subjects:||Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
|Date Deposited:||11 Mar 2010|
|Last Modified:||02 Mar 2012 11:43|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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