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자료유형
학술저널
저자정보
홍성재 (전자부품연구원) 차승재 (전자부품연구원) 이재용 (Hanchung RF Co. Ltd.) 김영성 (서울과학기술대학교)
저널정보
대한금속·재료학회 Electronic Materials Letters Electronic Materials Letters Vol.13 No.1
발행연도
2017.1
수록면
37 - 44 (8page)

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In this study, particles size of indium tin oxide nanoparticles (ITO-NPs)was improved by in-situ dispersion method. Polyvinylpyrrolidone(PVP) was used as dispersing agent, and reduced precipitates heattreatedat 400 °C. Brunauer, Emmett & Teller (BET) specific surfacearea (SSA) analysis and X-ray diffractometer (XRD) observationsfound that their particle size was improved by using the in-situdispersion. In addition, we found that the particle size of thecrystalline ITO-NPs was changed with the concentration of the PVPas well as the heat-treatment temperature. When 2 wt% PVP wasapplied, the highest BET SSA of the ITO-NPs, 114.7 m2/g, wasobtained after heat-treatment at 400 °C. In fact, the lowest sized, lessthan 7 nm, ITO-NPs was observed with high resolution transmissionelectron microscope (HRTEM). The ITO-NPs were well dispersed inthe solvent to formulate a 20 wt% ITO-NPs solution. ITO-NPscoated layer on 3 × 3 cm2 quartz substrate showed sheet resistance of319 Ω/□ and optical transmittance of 89.5% after heat-treatment at900 °C. Heat was well generated at the ITO-NPs coated layer withsupplied voltage. Also, temperature of above 150 °C was obtainedfrom the transparent heater, and 89 °C was obtained with low power,0.21 W/cm2, that is superior to commercial heaters.

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