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...
Saved in:
Published in | Physics and chemistry of minerals Vol. 35; no. 3; pp. 137 - 145 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer-Verlag
01.04.2008
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
Cover
Loading…
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 |