잉크젯 프린팅을 이용한 초박막 투명 TiO2 코팅층 제조
Preparation of Ultra-Thin Transparent TiO2 Coated Film by Ink-Jet Printing Method
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초록
나노기술의 발전과 함께 소재 분야에서 가장 널 리 연구되어지고 있는 반도체 산화물 물질 중 하나 인 TiO2는 물리화학적 안정성과 광학적 안정성을 동시에 지니고 있어, 광촉매1), 전극재료2), 가스센 서3), 광학소재4), 수소발생재료5) 등과 같이 다양한 분야에 응용되고 있다.
Abstract
Dye sensitized solar cells(DSSC) are the most promising future energy resource due to their high energy efficiency, low production cost, and simple manufacturing process. But one problem in DSSC is short life time compared to silicon solar cells. This problem occurred from photocatalytic degradation of dye material by nanometer sized TiO2 particles. To prevent dye degradation as well as to increase its life time, the transparent coating film is needed for UV blocking. In this study, we synthesized nanometer sized TiO2 particles in sols by increasing its internal pressure up to 200 bar in autoclave at 120oC for 10 hrs. The synthesized TiO2 sols were all formed with brookite phase and their particle size was several nm to 30 nm. Synthesized TiO2 sols were coated on the backside of fluorine doped tin oxide(FTO) glass by ink jet printing method. With increasing coating thickness by repeated ink jet coating, the absorbance of UV region (under 400 nm) also increases reasonably. Decomposition test of titania powders dispersed in 0.1 mM amaranth solution covered with TiO2 coating glass shows more stable dye properties under UV irradiation, compared to that with asreceived FTO glass.
참고문헌 (2)
- "고분자과학과 기술", 17(4), pp.436~ (2006)
- Meng Ni, Michal, "Sust. Energ. Rev" (2007)