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Absorption and emission spectra of thallium activated Na2O-NaCl-B2O3 and K2O-KCl-B2O3 glasses (1974)

Pathak, N. L. ; Paul, A. ; Sen, S. C.

Springer

Journal of materials science 9 (1974), S. 1493-1498

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Details

ISSN: 1573-4803

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract Absorption and emission spectra of two Na2O-NaCl-B2O3 and two K2O-KCl-B2O3 glasses, with large thallium concentrations (about 0.01 mol thallium per litre glass) have been studied. Absorption bands have been observed at 49 000, 44 500 and 40 000 cm−1 for the Na2O-NaCl-B2O3 glasses, and at 49 000, 43 500 and 38 500 cm−1 for the K2O-KCl-B2O3 glasses at 300 K. Emission spectra have been recorded at 83, 308, 445 and 485 K; generally two emission bands have been observed in the ultraviolet region, and the intensity of both bands increased with decreasing temperature. The absorption and emission bands have been assigned to electronic transitions in different centres formed by Tl+ ions in glass.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00552935

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