Effects of Eu3+ co-doping on the structural and optical properties of Ce3+ doped ZnO powder synthesized by chemical bath deposition method

被引：15

作者：

Malimabe, Moipone A. ^{[1
]}

Motloung, Setumo, V ^{[2
,3
]}

Motaung, Tshwafo E. ^{[4
]}

Koao, Lehlohonolo F. ^{[1
]}

机构：

[1] Univ Free State, Dept Phys, Qwaqwa Campus,Private Bag X13, ZA-9866 Phuthaditjhaba, South Africa

[2] Nelson Mandela Univ, Dept Phys, POB 77000, ZA-6031 Port Elizabeth, South Africa

[3] Sefako Makgatho Hlth Sci Univ, Dept Phys, POB 94, ZA-0204 Medunsa, South Africa

[4] Univ Zululand, Dept Chem, Private Bag X1001, ZA-3886 Kwa Dlangezwa, South Africa

来源：

PHYSICA B-CONDENSED MATTER | 2020年 / 579卷

基金：

新加坡国家研究基金会;

关键词：

Luminescence; CBD; Band gap; Co-doped; Aggregation; Emission; ENERGY-TRANSFER; MORPHOLOGY; NANOPARTICLES; LUMINESCENCE; EU2+; SIZE; TIME;

D O I：

10.1016/j.physb.2019.411890

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this study undoped, Ce3+-, Eu3+- doped and Ce3+: Eu3+ and co-doped ZnO nanopowders were synthesized by the chemical bath deposition (CBD) method. The samples were annealed at 700 degrees C for 2 h using an open furnace. The aim in this study was to investigate the energy transfer processes between Ce3+ and Eu3+ ions into ZnO powders. The X-Ray diffraction results indicated an increase in the crystallite sizes while scanning electron microscopy shown aggregation for the Ce3+: Eu3+ co-doped ZnO nanopowders. Ultraviolet-visible spectra exhibited red and blue shift in the Ce3+-, Eu3+ doped and Ce3+: Eu3+ co-doped ZnO nanopowders, respectively. The emission peaks at 582, 617, 659 and 705 nm are attributed to Eu3+ intra-4f transitions of D-5(0) -> F-7(1), D-5(0) -> F-7(2), D-5(0) -> F-7(3) and D-5(0) -> F-7(4) when excited by 465, 534 and 582 nm after co-doping. The chromaticity diagram show colour co-ordination in the orange vertex.

引用

页数：8

共 41 条

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