| 학회 |
한국화학공학회 |
| 학술대회 |
2013년 가을 (10/23 ~ 10/25, 대구 EXCO) |
| 권호 |
19권 2호, p.1710 |
| 발표분야 |
에너지 |
| 제목 |
Effects of calcination temperatures of W-Mo co-doped VO2 particles on thermochromic properties |
| 초록 |
Vanadium dioxide(VO2) has a reversible semiconductor-to-metal(S-M) transition temperature(Tc) of approximately 68 ℃ with an abrupt electrical and optical properties change. It is possible for a few dopants to control the Tc from 68 ℃ to low temperature. In this study, W and Mo co-doped VO2 nanopowders were synthesized via hydrolysis of vanadyl sulfate mingled with a small amount of sodium tungstate and sodium molybdate and subsequent calcination process. The W-Mo co-doped VO2 particles were calcined at different temperatures(775-875℃) for 3h under N2 atmosphere to study influence of VO2 crystallnity and Tc, respectively. From the XRD and DSC results, the crystallinity is strong at 850 ℃ and its Tc change about 36 ℃ (from 68 ℃ to 32 ℃). XPS spectra revealed that Mo6+ and W6+ incorporated into the VO2 lattice and formed solid-solution phases with VO2. For further characterization, TEM and FE-SEM were done. |
| 저자 |
신지혜1, 조초원1, 유중환2
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| 소속 |
1한국세라믹기술원 / 고려대, 2한국세라믹기술원 |
| 키워드 |
smart window; Vanadium dioxide; thermochromic; co-doped vanadium dioxide; Phase transition temperature; tungsten- molybdenum codoping
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| E-Mail |
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| 원문파일 |
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