Heat-treatment-induced luminescence degradation in Tb3+-doped CePO4 nanorods

Weihua Di; Xiaoxia Zhao; Zhaogang Nie; Xiaojun Wang; Shaozhe Lu; Haifeng Zhao; Xinguang Ren

doi:10.1016/j.jlumin.2009.11.034

Heat-treatment-induced luminescence degradation in Tb³⁺-doped CePO₄ nanorods

Weihua Di, Xiaoxia Zhao, Zhaogang Nie, Xiaojun Wang, Shaozhe Lu, Haifeng Zhao, Xinguang Ren

Biochemistry, Chemistry, & Physics

CAS - Changchun Institute of Optics Fine Mechanics and Physics

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

CePO₄:Tb nanorods were synthesized via a simple wet-chemical route. The as-synthesized CePO₄:Tb nanorods present high photoluminescence efficiency due to an efficient energy transfer form Ce³⁺ to Tb³⁺. However, heat treatment at 150 °C in air leads to a significant decrease of photoluminescence. X-ray photoelectron spectroscopy and excitation spectra revealed the oxidation of Ce³⁺ to Ce⁴⁺ in the heat-treatment process, which should be responsible for significant photoluminescence degradation due to the breakage of Ce³⁺→Tb³⁺ energy transfer. This conclusion is further supported by atmosphere and size effects of photoluminescence of CePO₄:Tb under the heat treatment.

Original language	English
Pages (from-to)	728-732
Number of pages	5
Journal	Journal of Luminescence
Volume	130
Issue number	4
DOIs	https://doi.org/10.1016/j.jlumin.2009.11.034
State	Published - Apr 2010

Keywords

Ce
Ce
Photoluminescence
Tb
Thermal degradation

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10.1016/j.jlumin.2009.11.034

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title = "Heat-treatment-induced luminescence degradation in Tb3+-doped CePO4 nanorods",

abstract = "CePO4:Tb nanorods were synthesized via a simple wet-chemical route. The as-synthesized CePO4:Tb nanorods present high photoluminescence efficiency due to an efficient energy transfer form Ce3+ to Tb3+. However, heat treatment at 150 °C in air leads to a significant decrease of photoluminescence. X-ray photoelectron spectroscopy and excitation spectra revealed the oxidation of Ce3+ to Ce4+ in the heat-treatment process, which should be responsible for significant photoluminescence degradation due to the breakage of Ce3+→Tb3+ energy transfer. This conclusion is further supported by atmosphere and size effects of photoluminescence of CePO4:Tb under the heat treatment.",

keywords = "Ce, Ce, Photoluminescence, Tb, Thermal degradation",

author = "Weihua Di and Xiaoxia Zhao and Zhaogang Nie and Xiaojun Wang and Shaozhe Lu and Haifeng Zhao and Xinguang Ren",

year = "2010",

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volume = "130",

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TY - JOUR

T1 - Heat-treatment-induced luminescence degradation in Tb3+-doped CePO4 nanorods

AU - Di, Weihua

AU - Zhao, Xiaoxia

AU - Nie, Zhaogang

AU - Wang, Xiaojun

AU - Lu, Shaozhe

AU - Zhao, Haifeng

AU - Ren, Xinguang

PY - 2010/4

Y1 - 2010/4

N2 - CePO4:Tb nanorods were synthesized via a simple wet-chemical route. The as-synthesized CePO4:Tb nanorods present high photoluminescence efficiency due to an efficient energy transfer form Ce3+ to Tb3+. However, heat treatment at 150 °C in air leads to a significant decrease of photoluminescence. X-ray photoelectron spectroscopy and excitation spectra revealed the oxidation of Ce3+ to Ce4+ in the heat-treatment process, which should be responsible for significant photoluminescence degradation due to the breakage of Ce3+→Tb3+ energy transfer. This conclusion is further supported by atmosphere and size effects of photoluminescence of CePO4:Tb under the heat treatment.

AB - CePO4:Tb nanorods were synthesized via a simple wet-chemical route. The as-synthesized CePO4:Tb nanorods present high photoluminescence efficiency due to an efficient energy transfer form Ce3+ to Tb3+. However, heat treatment at 150 °C in air leads to a significant decrease of photoluminescence. X-ray photoelectron spectroscopy and excitation spectra revealed the oxidation of Ce3+ to Ce4+ in the heat-treatment process, which should be responsible for significant photoluminescence degradation due to the breakage of Ce3+→Tb3+ energy transfer. This conclusion is further supported by atmosphere and size effects of photoluminescence of CePO4:Tb under the heat treatment.

KW - Ce

KW - Photoluminescence

KW - Tb

KW - Thermal degradation

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DO - 10.1016/j.jlumin.2009.11.034

M3 - Article

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JO - Journal of Luminescence

JF - Journal of Luminescence

IS - 4

ER -

Heat-treatment-induced luminescence degradation in Tb³⁺-doped CePO₄ nanorods

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Keywords

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