| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5353902 | Applied Surface Science | 2013 | 5 Pages |
Abstract
The hexagonal bi-pillar structures of undoped and sulfur-doped ZnO particles have been synthesized by hydrothermal method to study the relationship between UV and long wavelength emissions, green emission (GE) and orange emission (OE) bands. A room temperature photoluminescence comparison between undoped and sulfur-doped ZnO shows an increase of long wavelength emission, that is presumably due to an increase of defects in doped ZnO. Spatial cathode luminescence (CL) analysis on a single ZnO particle shows a competitive behavior between GE and OE bands. The long wavelength emissions in ZnO are all related to Zn vacancies. GE will dominate if the Zn vacancy-related oxygen stays at lattice point; otherwise OE will dominate if this oxygen atom leaves lattice point to form a interstitial atom.
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Authors
Yuanping Sun, Hongying Guo, Feihong Jiang, Run Yuan, Jun Zhang, Xionghui Zeng, Taofei Zhou, Yongxin Qiu, Baoshun Zhang, Ke Xu, Hui Yang,