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Temperature-induced evolution of novel mixture-phased particles at the tips of SnO2 whiskers
- Kim, Sang Sub;
- Choi, Sun-Woo;
- Lee, Chongmu;
- Yang, Ju Chan;
- Na, Han Gil;
- ... Kim, Hyoun Woo;
- 외 1명
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1초록
A mixture of Sn, In, and Ge powders was thermally evaporated to synthesize SnO2 whiskers. Elevation of the growth temperature from 800 degrees C to 900 degrees C contributed to the generation of mixture-phased particles at the tips of whickers, due to the change of the dominant growth mechanism from base-growth vapor-liquid-solid (VLS) to a tip-growth VLS process. We observed that the particles were comprised of a mixture of tetragonal SnO2, rhomboheclral In2O3, and hexagonal GeO2. The composite materials exhibited stable and reproducible sensing properties with respect to NO2 and CO.
키워드
Tin oxide; Nanostructures; Gas sensors; Whiskers; CATALYZED GROWTH; TIN OXIDE; NANOWIRES; FABRICATION
- 제목
- Temperature-induced evolution of novel mixture-phased particles at the tips of SnO2 whiskers
- 저자
- Kim, Sang Sub; Choi, Sun-Woo; Lee, Chongmu; Yang, Ju Chan; Na, Han Gil; Kwak, Dong Sub; Kim, Hyoun Woo
- 발행일
- 2012-01
- 유형
- Article
- 권
- 179
- 페이지
- 381 ~ 387