Afterglow and thermoluminescence of ZrO2 nanopowders

被引：21

作者：

Puust, Laurits ^{[1
]}

Kiisk, Valter ^{[1
]}

Utt, Kathriin ^{[1
]}

Maendar, Hugo ^{[1
]}

Sildos, Ilmo ^{[1
]}

机构：

[1] Univ Tartu, Inst Phys, EE-51014 Tartu, Estonia

来源：

CENTRAL EUROPEAN JOURNAL OF PHYSICS | 2014年 / 12卷 / 06期

关键词：

zirconium dioxide; photoluminescence; afterglow; thermoluminescence; electron traps; PERSISTENT LUMINESCENCE; MONOCLINIC ZRO2; PHOTOLUMINESCENCE; PHOSPHORESCENCE; DECONVOLUTION; DOSIMETER;

D O I：

10.2478/s11534-014-0456-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A careful study of the phosphorescence afterglow and the thermoluminescence (TL) of sol-gel-prepared m-ZrO2 nanocrystalline powders in an extended temperature range -100 to 300 A degrees C was carried out. Wavelength-resolved TL proved the existence of a single active luminescence centre in this temperature range. A TL method based on various heating rates was used to derive more reliable trap depths of 0.75, 0.95, 1.25, 1.46 and 1.66 eV whereas deconvolution methods provided somewhat lower values. The most intense room-temperature afterglows (that were easily observable beyond 1000 s) were obtained from samples annealed at 1250 and 1500 A degrees C, and were attributed mainly to depopulation of the 1.25 eV traps.

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页码：415 / 420

页数：6

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