Growth of ZnO-Nanorod Grating on the Seed Grating Produced by Femtosecond Laser Pulses
- Authors
- Lee, Geon Joon; Nam, Hyun Jung; Hwangbo, Chang Kwon; Lim, Hyunjin; Cheong, Hyeonsik; Kim, Hee Soo; Yoon, Chong Seung; Min, Sun-Ki; Han, Sung-Hwan; Lee, YoungPak
- Issue Date
- Oct-2010
- Publisher
- IOP PUBLISHING LTD
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS, v.49, no.10, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS
- Volume
- 49
- Number
- 10
- Start Page
- 1
- End Page
- 5
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/173593
- DOI
- 10.1143/JJAP.49.105001
- ISSN
- 0021-4922
- Abstract
- In this research, we successfully fabricated ZnO-nanorod grating by carrying out femtosecond-laser modification of the seed layer. First, a Ag-doped ZnO seed layer was deposited on a glass substrate by dc/rf magnetron co-sputtering, in which rf and dc power sources were utilized for the ZnO and the Ag targets, respectively. Next, a seed grating was produced on the seed layer by using the two-beam interference of femtosecond-laser pulses. Finally, a ZnO-nanorod grating was grown on the seed grating by chemical bath deposition in an aqueous solution of Zn(NO3)(2) and hexamethyltetramine. The scanning-electron-microscopy images indicate that the ZnO-nanorod grating can be regarded as a spatially periodic structure consisting of alternating bands of ZnO nanorods with relatively large and small diameters. The selected-area electron-diffraction patterns of the seed grating reveal that the formation of the ZnO-nanorod grating is attributable to the spatially selective modification of the seed layer produced by femtosecond-laser pulses.
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