• Title/Summary/Keyword: Thin composite films(TCFs)

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Thin composite film passivation through RF sputtering method For Large-sized Organic Display Devices

  • Lee, Joo-Won;Kim, Young-Min;Park, Jung-Soo;Bea, Sung-Jin;Kim, Na-Rae;Kim, Jai-Kyeong;Jang, Jin;Ju, Byeong-Kwon
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07b
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    • pp.1480-1483
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    • 2005
  • Transparent thin composite films (TCFs) were deposited on OLED devices by means of RF sputtering method and their passivation-properties were evaluated by comparing to the e-beam evaporating method. This composite film formed by mixed ratio of MgO (3wt %): $SiO_2$ (1wt %) was developed from pallet as a source of e-beam evaporator to 6-inch size target for sputtering in order to apply for large-sized organic display devices. Water Vapor Transmission Rates (WVTR) of the deposited films were measured as a function of thickness to assess the effectiveness of this film as a passivation layer and it applied to real devices. From this study, we can confirm that the passivation layer formed by TCFs using RF sputtering method sufficiently shows the potentiality of application to passivation layer for organic display devices.

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Development of Spray Coating Methods for Large Area Sol-Gel ZnO/Ag Nanowire Composite Transparent Conducting Substrates (대면적 졸-겔 산화아연/은 나노선 복합 투명 전도 기판 제조를 위한 스프레이 코팅법 개발)

  • Cho, Wonki;Baik, Seung Jae
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.31 no.1
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    • pp.55-60
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    • 2018
  • Transparent conductive thin films (TCFs) are essential materials for solar cells, organic light-emitting diodes, and display panels. Indium tin oxide (ITO) is one of the most widely used commercial materials to create TCFs'; however, new materials that can possibly replace ITO at a lower cost and/or those possessing mechanical flexibility are urgently needed. Silver nanowire (AgNW) is one of those promising materials, as it is less expensive and possesses superior mechanical flexibility as compared to ITO. We used AgNW and sol-gel ZnO to fabricate composite thin films by spray coating. We propose two spray-coating methods: the 'metal-organic chemical vapor deposition (MOCVD)/AgNW' method and the Mixture method. These two methods are expected to be commercialized for high-quality and low-cost products, respectively.

Study on the Water Vapor Permeation Properties of the Inorganic Thin Composite Film for the Passivation Layer in the OLED (유기 EL 보호층으로 적용하기 위한 무기 복합 박막의 투습율 특성 연구)

  • 김광호;이주원;김영철;주병권;김재경
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.17 no.4
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    • pp.432-438
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    • 2004
  • In this study, we investigated the WVTRs Properties of inorganic thin composite films(ITCFs) to be newly adopted as the passivation layer of the OLED to replace the inorganic compound material Because we thought that inorganic compound materials were limited to enhance the barrier property of thin film. So, ITCFs were fabricated by mixing the cooperated material with the base material. And then, ITCFs were deposited onto the plastic substrate using the electron beam evaporation system and the water vapor transmission rates(WVTRs) were measured using the Mocon equipment. As a result of the WVTR measurement, we could analyze the WVTR values for various ITCFs. ITCFs had a remarkably lower value than the inorganic compound film. Through the analysis of thin film, we can understand the crystal structure and mixed amount. Therefore, ITCFs can be used as the inorganic passivation layers of OLED with the inorganic compound film.