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학술발표회초록보기

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제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 For smart window application: simple fabrication of infrared modulating VO2 film

등록일
2014년 9월 3일 11시 38분 20초
접수번호
1430
발표코드
MAT.P-1168 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
이명순, 홍성철1, 지성경, 김돈*
부경대학교 화학과, Korea
1(주)마프로 기술연구소, Korea
We could prepared a smart VO2 window from the aqueous solution of VCl4+ by one step heating procedure. This procedure was very simple and more effective method to prepare the smart window: added PVP (10 %wt) into the VCl4+ mixture solution with V2O5, N2H4, HCl and water, coated over a piece of polished sapphire glass, and then sintered under Ar flow at 520 oC with a controlled heating history. At the low temperature, below the insulator to metal transition temperature (TH = ~68 oC), the IR transmittance of the film was increased along with increased wavelength. However, in high temperature region (above TH, metal phase), the transmittance was decreased upto 25 % in the long wavelength IR region ( > 800 nm). The temperature dependence of IR transparency of the smart film, which observed by home made spectrophotometer, clearly shows the phase transition of the film near room temperature. The phase transition was also observed in electric transport measurement. These indicate the smart window can be used as energy save windows in modern green building.

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