The Influence of Energy Levels and Defects on the Thermoluminescence of LiF: SiO5 Phosphors Doped with Ce3+

被引：0

作者：

Etefa, Habtamu F. ^{[1
]}

Mbuyise, Xolani G. ^{[2
,3
]}

Geldasa, Fikadu T. ^{[1
]}

Mola, Genene T. ^{[3
]}

Chithambo, Makaiko L. ^{[4
]}

Dejene, Francis B. ^{[1
]}

机构：

[1] Walter Sisulu Univ, Fac Nat Sci, Dept Phys, Mthatha Campus,Nelson Mandela Dr Private Bag X1, ZA-5117 Mthatha, South Africa

[2] Univ KwaZulu Natal, Sch Educ, Edgewood Campus,Admin Bldg,LG Floor,Room 140, ZA-4000 Durban, South Africa

[3] Univ KwaZulu Natal, Sch Chem & Phys, Pietermaritzburg Campus,Private bag X01, ZA-3209 Scottsville, South Africa

[4] Rhodes Univ, Dept Phys & Elect, Artillery Rd,POB 94, ZA-6139 Grahamstown, South Africa

来源：

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES | 2025年 / 26卷 / 07期

关键词：

TL luminescence; phosphor; dose; trap depth; phosphorescence; DOSIMETRIC CHARACTERISTICS; PHOTOLUMINESCENCE;

D O I：

10.3390/ijms26073183

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The morphological, structural, and thermoluminescence (TL) properties of LiF:SiO5 doped with Ce3+ solid powder phosphor were systematically analyzed. X-ray diffraction (XRD) confirmed the crystalline nature of single-phase LiF:SiO5:Ce3+ nanoparticles (NPs), with crystalline size (D) determined using the Williamson-Hall (W-H) and Scherrer methods. Ce3+ doping induced structural modifications, reflected in variations of full width at half maximum (FWHM), strain, and stress values. The TL glow curve revealed two distinct peaks at approximately 64 degrees C and 134 degrees C, shedding light on the electron capture and release mechanisms following beta irradiation. A dose-dependent study demonstrated that TL intensity increased proportionally with radiation exposure, showing a superlinearity relationship up to 6 Gy. Additionally, investigations into different heating rates indicated only a slight shift in peak of the temperature, confirming the thermal stability of the materials. This study provides valuable insights into the TL behavior of LiF:SiO5:Ce3+, making it a promising candidate for radiation dosimetry and luminescence applications.

引用

页数：15

共 47 条

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