Formation mechanisms of ZnO nanocrystals embedded in an amorphous Zn2xSi1-xO2 layer due to sputtering and annealing
- Authors
- Shin, Jae-Won; Lee, Jeong Yong; No, Young Soo; Kim, Tae-Won; Choi, Won-Kook
- Issue Date
- Feb-2011
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Oxide materials; Semiconductors; Surfaces and interfaces; Thin films; Atomic scale structure; Transmission electron microscopy; TEM
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, v.509, no.6, pp.3132 - 3135
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ALLOYS AND COMPOUNDS
- Volume
- 509
- Number
- 6
- Start Page
- 3132
- End Page
- 3135
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/169133
- DOI
- 10.1016/j.jallcom.2010.12.021
- ISSN
- 0925-8388
- Abstract
- ZnO nanocrystals embedded in an amorphous Zn2xSi1-xO2 layer inserted between a ZnO thin film and a p-Si (100) substrate were formed by magnetron sputtering and thermal annealing. High-resolution transmission electron microscopy (HRTEM) images showed that ZnO nanocrystals were embedded in the Zn2xSi1-xO2 layer inserted into a ZnO/Si heterostructure. The {01 (1) over bar0} planes were observed for the ZnO nanocrystals with a [0001] orientation direction, and the {01 (1) over bar1} and the {0001} planes were observed for the ZnO nanocrystal with a [2 (1) over bar(1) over bar0] orientation direction. The formation of ZnO nanocrystals consisting of the most stable {0001} and (01 (1) over bar1) facet planes was attributed to atomic rearrangement of Zn and 0 atoms to reduce the surface energy during the thermal annealing and the cooling processes. The formation mechanisms for the ZnO nanocrystals embedded in an amorphous Zn2xSi1-xO2 layer inserted into a ZnO/p-Si (100) heterostructure were described on the basis of the HRTEM images.
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