Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
729078 | Materials Science in Semiconductor Processing | 2006 | 4 Pages |
Abstract
ZnO nanoparticles were synthesized in ethanolic solution using a sol–gel method. The structural and optical properties were investigated by X-ray diffraction, transmission electron microscopy, UV absorption, and photoluminescence. After annealing at 200 °C, the particle size is increased and the peak of defect luminescence in the visible region is changed. A yellow emission was observed in the as-prepared sample and a green emission in the annealed sample. The change of the visible emission is related to oxygen defects. Annealing in the absence of oxygen would increase oxygen vacancies.
Related Topics
Physical Sciences and Engineering
Engineering
Electrical and Electronic Engineering
Authors
W.Q. Peng, S.C. Qu, G.W. Cong, Z.G. Wang,