Re-Dispersible Li+ and Eu3+ Co-Doped Nanocrystalline ZnO: Luminescence and EPR Studies

2008 ◽  
Vol 8 (6) ◽  
pp. 3059-3062 ◽  
Author(s):  
R. S. Ningthoujam ◽  
N. S. Gajbhiye ◽  
Asar Ahmed ◽  
S. S. Umre ◽  
S. J. Sharma
Keyword(s):  
Oxygen Vacancy ◽  
Ethylene Glycol ◽  
Organic Solvent ◽  
Green Light ◽  
Urea Hydrolysis ◽  
Capping Agent ◽  
Zno Particles ◽  
Doped Zno ◽  
Co Doped

Nano-crystals of ZnO, Eu3+ doped ZnO, and Li+, Eu3+ co-doped ZnO have been prepared by urea hydrolysis in ethylene glycol medium at 150 °C. Ethylene glycol acts as capping agent for nanoparticles. Three colors 437 (blue), 540 (green) and 615 nm (red) from 2 at.% Li+ and 5 at.% Eu3+ co-doped ZnO have been observed from luminescence studies compared to that from 5 at.%. Eu3+ doped ZnO, which shows emission at 437 and 615 nm. It is established that green light is originated from the oxygen vacancy brought by Li+ incorporation into ZnO. Particles are re-dispersible in organic solvent such as ethanol, and are able to incorporate into polymer-based material such as SiO2 matrix.

Optimizing physical properties of Co-doped ZnO nanoparticles: Controlling oxygen vacancy and carrier concentration

Vacuum ◽  
2021 ◽  
pp. 110488
Author(s):  
Huying Yan ◽  
Jian Xue ◽  
Wenjing Chen ◽  
Jialing Tang ◽  
Ling zhong ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Physical Properties ◽  
Carrier Concentration ◽  
Zno Nanoparticles ◽  
Doped Zno ◽  
Co Doped

First-Principles Study on Co-Doped ZnO with Oxygen Vacancy

2010 ◽  
Vol 154-155 ◽  
pp. 124-129
Author(s):  
Zhen Zhen Weng ◽  
Zhi Gao Huang ◽  
Wen Xiong Lin
Keyword(s):  
Oxygen Vacancy ◽  
First Principles ◽  
Density Functional ◽  
Exchange Interactions ◽  
First Principles Calculations ◽  
Functional Theory ◽  
Ferromagnetic Exchange ◽  
Ferromagnetic Ground State ◽  
Doped Zno ◽  
Co Doped

The interatomic exchange interactions and the electronic structure of Co-doped ZnO with and without oxygen vacancy have been investigated by the first-principles calculations based on density functional theory. It is found that the oxygen vacancy can strengthen the ferromagnetic exchange interaction between Co atoms and might be available for carrier mediation. The oxygen vacancy near to the Co atoms is more favorable for the ferromagnetic ground state.

On the oxygen vacancy in Co-doped ZnO thin films

2009 ◽  
Vol 404 (23-24) ◽  
pp. 4800-4802 ◽  
Author(s):  
D. Seghier ◽  
H.P. Gislason
Keyword(s):  
Thin Films ◽  
Oxygen Vacancy ◽  
Zno Thin Films ◽  
Doped Zno ◽  
Co Doped

scholarly journals Analysis of oxygen vacancy in Co-doped ZnO using the electron density distribution obtained using MEM

2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Ji Hun Park ◽  
Yeong Ju Lee ◽  
Jong-Seong Bae ◽  
Bum-Su Kim ◽  
Yong Chan Cho ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Density Distribution ◽  
Electron Density ◽  
Electron Density Distribution ◽  
Doped Zno ◽  
Co Doped

Ferromagnetism in co-doped zno particles prepared by vaporization–condensation in a solar image furnace

2005 ◽  
Vol 290-291 ◽  
pp. 168-170 ◽  
Author(s):  
B. Martínez ◽  
F. Sandiumenge ◽  
Ll. Balcells ◽  
J. Fontcuberta ◽  
F. Sibieude ◽  
...  
Keyword(s):  
Solar Image ◽  
Zno Particles ◽  
Doped Zno ◽  
Co Doped

Effect of Cobalt Concentration and Oxygen Vacancy on Magnetism of Co Doped ZnO Nanorods

2016 ◽  
Vol 16 (3) ◽  
pp. 2719-2724 ◽  
Author(s):  
Congli Li ◽  
Ping Che ◽  
Changyan Sun ◽  
Wenjun Li
Keyword(s):  
Oxygen Vacancy ◽  
Zno Nanorods ◽  
Cobalt Concentration ◽  
Doped Zno ◽  
Co Doped

Enhanced room temperature ferromagnetism in electrodeposited Co-doped ZnO nanostructured thin films by controlling the oxygen vacancy defects

2015 ◽  
Vol 117 (21) ◽  
pp. 214310 ◽  
Author(s):  
A. Simimol ◽  
Aji A. Anappara ◽  
S. Greulich-Weber ◽  
Prasanta Chowdhury ◽  
Harish C. Barshilia
Keyword(s):  
Thin Films ◽  
Oxygen Vacancy ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Vacancy Defects ◽  
Nanostructured Thin Films ◽  
Doped Zno ◽  
Co Doped

Improved photo-luminescence behaviour of Eu3+ activated CaMoO4 nanoparticles via Zn2+ incorporation

RSC Advances ◽  
2015 ◽  
Vol 5 (69) ◽  
pp. 55977-55985 ◽  
Author(s):  
B. P. Singh ◽  
Maheshwary Maheshwary ◽  
P. V. Ramakrishna ◽  
Saurabh Singh ◽  
V. K. Sonu ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Reaction Medium ◽  
Photo Luminescence ◽  
Polyol Method ◽  
Capping Agent ◽  
Co Doped

Zn2+ (0, 2, 5, 7 and 10 at%) co-doped CaMoO4:2Eu3+ nanophosphors have been synthesized via the polyol method using ethylene glycol (EG) as both capping agent and reaction medium at 150 °C.

Synthesis and cellular compatibility of Co-doped ZnO particles in silk-fibroin peptides

2013 ◽  
Vol 102 ◽  
pp. 29-36 ◽  
Author(s):  
Yuanwen Zou ◽  
Zhongbing Huang ◽  
Yan Wang ◽  
Xiaoming Liao ◽  
Guangfu Yin ◽  
...  
Keyword(s):  
Silk Fibroin ◽  
Zno Particles ◽  
Doped Zno ◽  
Co Doped
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