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Atomic layer deposition coating of ZnO shell for GaN-ZnO core-sheath heteronanowires
- Authors
- Kim, Hyoun Woo; Yang, Ju Chan; Na, Han Gil; Lee, Chongmu
- Issue Date
- Sep-2011
- Publisher
- ELSEVIER
- Keywords
- Nanostructures; Chemical synthesis; Transmission electron microscopy
- Citation
- APPLIED SURFACE SCIENCE, v.257, no.22, pp.9420 - 9424
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 257
- Number
- 22
- Start Page
- 9420
- End Page
- 9424
- ISSN
- 0169-4332
- Abstract
- We have synthesized GaN-core/ZnO-shell nanowires and investigated effects of the ZnO coating. The Xray diffraction pattern showed that as-synthesized samples are composed of GaN and ZnO. Transmission electron microscopy indicated that the deposited ZnO shell layer is poly-crystalline. The photoluminescence (PL) spectrum of GaN has been changed by the ZnO coating, where emission bands centered at roughly 1.9 eV, 2.5 eV, and 3.3 eV were newly added to the emissions from core GaN nanowires. We found that overall PL intensity has been significantly increased by coating the ZnO shell layers.
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Related Researcher
- Kim, Hyoun Woo
- COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)