PRESSURE AND TEMPERATURE-DEPENDENCE OF CHROMIUM PHOTOLUMINESCENCE SPECTRA IN FLUORIDE ELPASOLITES

被引：56

作者：

DOLAN, JF

RINZLER, AG

KAPPERS, LA

BARTRAM, RH

机构：

[1] UNIV CONNECTICUT,DEPT PHYS,STORRS,CT 06269

[2] UNIV CONNECTICUT,INST MAT SCI,STORRS,CT 06269

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1992年 / 53卷 / 07期

关键词：

ELPASOLITES; FLUORIDES; PHOTOLUMINESCENCE; HIGH PRESSURE; LATTICE VIBRATIONS; PHASE TRANSITION;

D O I：

10.1016/0022-3697(92)90117-V

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Photoluminescence spectra of K2NaGaF6:Cr3+ and K2NaScF6:Cr3+, measured as functions of hydrostatic pressure, reveal a blue shift of the emission band culminating in a pressure-induced transition from a broad-band fluorescence spectrum to a highly structured phosphorescence spectrum. The blue shift is interpreted in terms of a pressure dependent local compressibility. The high-pressure, low-temperature emission spectrum of K2NaScF6:Cr3+ reveals a splitting of the zero-phonon line indicative of a transition to a lower symmetry phase.

引用

页码：905 / 912

页数：8

共 15 条

[1] THERMAL QUENCHING OF CHROMIUM PHOTOLUMINESCENCE IN ORDERED PEROVSKITES .1. TEMPERATURE-DEPENDENCE OF SPECTRA AND LIFETIMES [J].