Blue electroluminescence from ZnGa2O4:Eu powder samples

被引：26

作者：

Somasundaram, K. ^{[1
,2
]}

Girija, K. G. ^{[2
]}

Selvin, P. Christopher ^{[1
]}

Sudarsan, V. ^{[2
]}

Kadam, R. M. ^{[3
]}

Vatsa, R. K. ^{[2
]}

机构：

[1] Nallamuthu Gounder Mahalingatn Coll, Dept Phys, Coimbatore 642001, Tamil Nadu, India

[2] Bhabha Atom Res Ctr, Div Chem, Mumbai 400085, Maharashtra, India

[3] Bhabha Atom Res Ctr, Radiochem Div, Mumbai 400085, Maharashtra, India

来源：

JOURNAL OF LUMINESCENCE | 2017年 / 185卷

关键词：

Electroluminescence; Photoluminescence; Anti-site defects; Electron paramagnetic resonance; THIN-FILMS; ENERGY-TRANSFER; PHOTOLUMINESCENCE; LUMINESCENCE; PHOSPHOR; EU3+; CATHODOLUMINESCENCE; REDUCTION; NANOWIRES; CENTERS;

D O I：

10.1016/j.jlumin.2017.01.010

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

ZnGa2O4 and Europium incorporated ZnGa2O4 powder samples were prepared by solid state reaction of ZnO, Ga2O3 and Eu2O3 in stoichiometric quantities at 900 degrees C. The samples were subjected to AC powder electroluminescence and photoluminescence studies. Undoped ZnGa2O4 showed an electroluminescence peak with emission maximum around 525 nm, characteristic of luminescent centers like Ga2O3 structural units, anti-site defects and oxygen vacancies present in the lattice. Unlike this, for Europium incorporated ZnGa2O4 samples, blue light emission, characteristic of Eu2+ ions has been observed upon application of AC voltages. Europium ions also exist as separate Eu3+ containing phase in the samples as confirmed by photoluminescence studies. Electron Paramagnetic Resonance (EPR) studies confirmed the incorporation of Eu2+ at six coordinated Zn2+ site (anti-site) in ZnGa2O4 lattice. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：145 / 150

页数：6

共 50 条

[21] Hydrothermal synthesis and characterization of ZnGa2O4 phosphors
Chen, LM
Liu, YN
Lu, ZG
Huang, KL
MATERIALS CHEMISTRY AND PHYSICS, 2006, 97 (2-3) : 247 - 251
[22] The effect of Li, Cu and Zn doping on the luminance and conductivity of blue ZnGa2O4 phosphor
Yang, SH
Yokoyama, M
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1998, 37 (12A): : 6429 - 6433
[23] Blue, green, and red emission from undoped and doped ZnGa2O4 colloidal nanocrystals
Byun, Ho-June
Kim, Jong-Uk
Yang, Heesun
NANOTECHNOLOGY, 2009, 20 (49)
[24] Controlling the white phosphorescence ZnGa2O4 phosphors by surface defects
Garcia, C. R.
Oliva, J.
Diaz-Torres, L. A.
Montes, E.
Hirata, G.
Bernal-Alvarado, J.
Gomez-Solis, C.
CERAMICS INTERNATIONAL, 2019, 45 (04) : 4972 - 4979
[25] Structure and luminescent properties of Co2+/Cr3+ co-doped ZnGa2O4 nanoparticles
Duan, Xiulan
Liu, Jian
Wu, Yuanchun
Yu, Fapeng
Wang, Xinqiang
JOURNAL OF LUMINESCENCE, 2014, 153 : 361 - 368
[26] A facile hydrothermal route to self-assembled ZnGa2O4 particles and their microwave application
Lu, Mingjia
Ouyan, Xin
Wu, Songping
Ge, Rongyun
Xu, Rui
APPLIED SURFACE SCIENCE, 2016, 364 : 775 - 782
[27] Synthesis of In-doped ZnGa2O4 nanobelts and its enhanced cathodoluminescence
Wu, Lili
Zhang, Xitian
Liang, Yao
Xu, Haiyang
JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 468 (1-2) : 452 - 454
[28] Defect luminescence and lattice strain in Mn2+ doped ZnGa2O4
Somasundaram, K.
Abhilash, K. P.
Sudarsan, V.
Selvin, P. Christopher
Kadam, R. M.
PHYSICA B-CONDENSED MATTER, 2016, 491 : 79 - 83
[29] ZnGa2O4:Mn phosphor particles with spherical shape and clean surface
Roh, HS
Kang, YC
Park, SB
Park, HD
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2002, 41 (7A): : 4559 - 4562
[30] Synthesis and influence of annealing atmosphere on the luminescence properties of ZnGa2O4 nanowires
Hyunsu Kim
Soyeon An
Sunghoon Park
Chongmu Lee
Journal of the Korean Physical Society, 2013, 63 : 2367 - 2370

← 1 2 3 4 5 →