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논문 기본 정보

자료유형
학술저널
저자정보
Seok Ryeol Lee (LG display) Jae Ha Choi (LG display) Ho Seong Lee (Kyungpook National University)
저널정보
한국표면공학회 한국표면공학회지 한국표면공학회지 제48권 제6호
발행연도
2015.12
수록면
322 - 328 (7page)

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초록· 키워드

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We investigated the diffusion behaviors, electrical properties, microstructures, and composition of In-Ga-Zn-O (IGZO) oxide thin films deposited by radio frequency reactive magnetron sputtering with increasing annealing temperatures. The samples were deposited at room temperature and then annealed at 300, 400, 500, 600 and 700℃ in air ambient for 2 h. According to the results of time-of-flight secondary ion mass spectrometry and X-ray photoelectron spectroscopy, no diffusion of In, Ga, and Zn components were observed at 300, 400, 500, 600℃, but there was a diffusion at 700℃. However, for the sample annealed at 700℃, considerable diffusion occurred. Especially, the concentration of In and Ga components were similar at the IGZO thin film but were decreased near the interface between the IGZO and glass substrate, while the concentration of Zn was decreased at the IGZO thin film and some Zn were partially diffused into the glass substrate. The high-resolution transmission electron microscopy results showed that a phase change at the interface between IGZO film and glass substrate began to occur at 500℃ and an unidentified crystalline phase was observed at the interface between IGZO film and glass substrate due to a rapid change in composition of In, Ga and Zn at 700℃. The best values of electron mobility of 15.5 cm²/V·s and resistivity of 0.21 Ωcm were obtained from the sample annealed at 600℃.

목차

Abstract
1. Introduction
2. Experimental
3. Results and discussion
4. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2016-581-002295299