Formation of S2- and Se2- molecular ions through photochemical reactions and their vibronic luminescence in KCl:MnS/Se crystals

被引：6
|
作者：
Ye, R
Baba, M [1 ]
Nishidate, K
Schwan, LO
Schmid, D
机构：
[1] Iwate Univ, Dept Elect & Elect Engn, Fac Engn, Morioka, Iwate 0208551, Japan
[2] Univ Dusseldorf, Inst Phys Kondensierten Mat, D-40225 Dusseldorf, Germany
来源：
JOURNAL OF LUMINESCENCE | 2000年 / 87-9卷
关键词：
potassium chloride; chalcogen; manganese; vibronic spectra;
D O I：
10.1016/S0022-2313(99)00284-7
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
It is found that when quenched KCl:MnS/Se crystals are irradiated with UV light, S-2(-) and Se-2(-) molecular ions are formed. By this method these molecular ions were effectively introduced into KCI lattice for the first time. At 8.8 K, such luminescence spectra consist of one or more vibronic series of zero-phonon lines associated with isotope structure and phonon-side bands. The spectroscopic constants v(00), omega(0)(") and omega(0)(")chi(0)(") were calculated for the ground state of Se-2(-) ions. On the other hand, from the detailed observation of photochemical reactions in KCl : MnS, it was found that Mn+, Mn-0 and F centers were produced following the formation of S-2(-). From above results, a model for the formation of S-2(-) was proposed. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：542 / 545
页数：4
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