ELECTRONIC EXCITATIONS AND UV LUMINESCENCE IN SRO CRYSTALS AT 8 K

被引：8

作者：

FELDBACH, E ^{[1
]}

KINK, R ^{[1
]}

KIRM, M ^{[1
]}

LUSHCHIK, A ^{[1
]}

LUSHCHIK, C ^{[1
]}

LOHMUS, A ^{[1
]}

MAAROOS, A ^{[1
]}

MARTINSON, I ^{[1
]}

机构：

[1] LUND UNIV, DEPT PHYS, S-22362 LUND, SWEDEN

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 241卷 / 5-6期

关键词：

D O I：

10.1016/0009-2614(95)00672-Q

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Reflection and luminescence excitation spectra (5-30 eV) were measured for freshly cleaved SrO at 8 K. An emission band at 4.95 eV is dominant for a SrO crystal excited by photons in the region of fundamental absorption (5.6-30 eV). This emission is tentatively attributed to the radiative decay of self-trapped excitons. The emission at 5.03 eV is assigned to the excitons localized near barium impurity ions and is effectively excited by photons in the energy range 5.35-5.65 eV. The threshold energy of the secondary electron-hole pair creation by hot photoelectrons is estimated to be equal to E(th) = 13.5 +/- 0.3 eV for SrO at 8 K.

引用

页码：597 / 602

页数：6

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