Photoluminescence spectra of S2− center in natural and heat-treated scapolites

The emission and excitation spectra of yellow luminescence due to S 2 − in scapolites (#1 from Canada and #2 from an unknown locality) were observed at 300, 80 and 10 K. Emission and excitation bands at 10 K showed vibronic structures with a series of maxima spaced 15–30 and 5–9 nm, respectively. Th...

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Published inPhysics and chemistry of minerals Vol. 35; no. 3; pp. 137 - 145
Main Authors Aierken Sidike, Kusachi, I., Kobayashi, S., Atobe, K., Yamashita, N.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.04.2008
Springer Nature B.V
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Summary:The emission and excitation spectra of yellow luminescence due to S 2 − in scapolites (#1 from Canada and #2 from an unknown locality) were observed at 300, 80 and 10 K. Emission and excitation bands at 10 K showed vibronic structures with a series of maxima spaced 15–30 and 5–9 nm, respectively. The relative efficiency of yellow luminescence from scapolite #2 was increased up to 117 times by heat treatment at 1,000°C for 2 h in air. The enhancement of yellow luminescence by heat treatment was ascribed to the alteration of SO 3 2− and SO 4 2− to S 2 − in scapolite.
ISSN:0342-1791
1432-2021
DOI:10.1007/s00269-007-0205-3