EXCITON LUMINESCENCE IN TIN DIOXIDE SINGLE-CRYSTALS

被引：4

作者：

AGUEKIAN, VF ^{[1
]}

STEPANOV, YA ^{[1
]}

AKAI, I ^{[1
]}

KARASAWA, T ^{[1
]}

KOMATSU, T ^{[1
]}

机构：

[1] OSAKA CITY UNIV, DEPT PHYS, SUMIYOSHI KU, OSAKA 558, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1993年 / 62卷 / 12期

关键词：

TIN DIOXIDE; EXCITON; OXYGEN VACANCIES; EXCITON LOCALIZATION;

D O I：

10.1143/JPSJ.62.4516

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The exciton spectra of SnO2 single crystals with the low and high concentrations of the oxygen vacancies (OV) are investigated. The series of luminescence lines adjacent to the lowest free exciton states (the excitons localized by the isolated OV and OV clusters) increases superlinearly with the optical excitation level. It is shown that the luminescence spectra of SnO2 can be described as the zero-phonon and one LO-phonon assisted anihilation of the free and localized excitons. The shape of LO-phonon replicas of the free exciton luminescence corresponds to Maxwellian distribution of the excitons which have the effective temperature significantly higher than the lattice temperature in the case of pulse excitation level 10(6)-10(7)/cm2.

引用

页码：4516 / 4521

页数：6

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