𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The effects of ZnGa2O4 formation on structural and optical properties of ZnO:Ga powders

✍ Scribed by Agnaldo de Souza Gonçalves; Sergio Antonio Marques de Lima; Marian Rosaly Davolos; Selma Gutierrez Antônio; Carlos de Oliveira Paiva-Santos

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
197 KB
Volume
179
Category
Article
ISSN
0022-4596

No coin nor oath required. For personal study only.

✦ Synopsis

Gallium-doped zinc oxide (ZnO:Ga 1, 2, 3, 4 and 5 at%) samples were prepared in powder form by modifying the Pechini method. The formation of zinc gallate (ZnGa 2 O 4 ) with the spinel crystal structure was observed even in ZnO:Ga 1 at% by X-ray diffraction. The presence of ZnGa 2 O 4 in ZnO:Ga samples was also evidenced by luminescence spectroscopy through its blue emission at 430 nm, assigned to charge transfer between Ga 3+ at regular octahedral symmetry and its surrounding O 2À ions. The amount of ZnGa 2 O 4 increases as the dopant concentration increases, as observed by the quantitative phase analysis by the Rietveld method.

📜 SIMILAR VOLUMES

The effect of ZnO buffer layer on struct
The effect of ZnO buffer layer on structural and optical properties of ZnO nanorods
✍ Jihui Lang; Xue Li; Jinghai Yang; Qiang Han; Yongsheng Yan; Ming Gao; Dan Wang; 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 251 KB 👁 1 views

## Abstract A low‐temperature synthetic route was used to prepare oriented arrays of ZnO nanorods on ITO conducting glass substrate coated with buffer layer of ZnO seeds in an aqueous solution. The corresponding growth behavior and optical properties of ZnO nanorod arrays were studied. It was found

Effect of La doping on the electronic st
Effect of La doping on the electronic structure and optical properties of ZnO
✍ S.H. Deng; M.Y. Duan; M. Xu; L. He 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 446 KB

The electronic structure and optical properties of ZnO doped with La have been investigated using density functional theory based on first-principles ultrasoft pseudopotential method. The calculated results show that the La doping increases the bandgap of ZnO, in agreement with the experimental resu