CaLa 2 ZnO 5:Gd 3+phosphor prepared by sol-gel method: Photoluminescence and electron spin resonance properties

被引：6

作者：

Singh, Vijay ^{[1
]}

Natarajan, V ^{[2
]}

Singh, N. ^{[1
]}

Srivastava, Anoop K. ^{[3
]}

Kwon, Young-Wan ^{[4
]}

Lakshminarayana, G. ^{[5
]}

机构：

[1] Konkuk Univ, Dept Chem Engn, Seoul 05029, South Korea

[2] Inst Adv Res, Gandhinagar 382007, Gujarat, India

[3] Dr Rammanohar Lohia Avadh Univ, Dept Appl Sci & Humanities, Inst Engn & Technol, Ayodhya 224001, India

[4] Korea Univ, KU KIST Grad Sch Converging Sci & Technol, Seoul 02841, South Korea

[5] Kyungpook Natl Univ, Intelligent Construct Automat Ctr, 80 Daehak Ro, Daegu 41566, South Korea

来源：

OPTIK | 2020年 / 212卷

基金：

新加坡国家研究基金会;

关键词：

UP-CONVERSION LUMINESCENCE; QUANTUM EFFICIENCY; RED LUMINESCENCE; PHOSPHORS; CALA2ZNO5; NANOPARTICLES; PHOTOTHERAPY; MORPHOLOGY; HO3+; EPR;

D O I：

10.1016/j.ijleo.2020.164247

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A sequence of Gd-doped CaLa2ZnO5 samples was synthesized through a sol gel method and their characterizations were done by X-ray diffraction (XRD), scanning electron microscope (SEM), electron spin resonance (ESR), and photoluminescence (PL) spectroscopic techniques. PL spectra exhibited a strong emission peak at 314 nm, showing the presence of Gd3+ ions in a CaLa2ZnO5 host lattice. This peak corresponded to 6P7/2 → 8S7/2 transition of Gd3+ ion under 227 nm excitation. ESR studies suggested Gd goes in the CaLa2ZnO5 matrix as Gd3+. By correlating the PL and ESR spectral data, the probable site symmetry of Gd3+ ion is proposed in the host matrix. © 2020 Elsevier GmbH

引用

页数：7

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