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Growth of ZnO nanorod arrays by hydrothermal method using homo-seed layers annealed at various temperatures
- Growth of ZnO nanorod arrays by hydrothermal method using homo-seed layers annealed at various temperatures
- Bae, YS[Bae, Young Sook]; Kim, DC[Kim, Dong Chan]; Ahn, CH[Ahn, Cheol Hyoun]; Kim, JH[Kim, Jae Hyun]; Cho, HK[Cho, Hyung Koun]
- DGIST Authors
- Kim, JH[Kim, Jae Hyun]
- Issue Date
- Surface and Interface Analysis, 42(6-7), 978-982
- Article Type
- Article; Proceedings Paper
- Annealing Temperatures; Deep Level Emission; Gels; Hydrothermal; Hydrothermal Methods; Hydrothermally; Hydroxyl Groups; Nanorod Formation; Nanorods; Orange-Red; Oxygen; Oxygen Vacancies; Preferred Orientations; Seed; Seed Layer; Seed Layers; Sol-Gel Process; Solution Process; Zinc Oxide; ZnO; ZnO Nanorod; ZnO Nanorod Arrays
- Vertically arrayed ZnO nanorods were synthesized by a hydrothermal method on homo-seed layers deposited using a sol-gel process and heat-treated at various temperatures ranging from 400 to 700 °C in air. The effect of the annealing temperatures on nanorod formation was investigated. With increasing temperature, the microstructure of the ZnO seed layers changed from nanocrystals to coarse polycrystals with a preferred orientation, which led to an increase in the length and diameter of the hydrothermally grown nanorods. The ZnO nanorods, based on a solution process, exhibited deep-level emission in the orange- red region related with hydroxyl group reactions, while the thermally treated seed layers showed oxygen vacancy-related emission. Copyright © 2010 John Wiley & Sons, Ltd.
- Wiley Blackwell
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