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Molecular Crystals and Liquid Crystals Volume 458, 2006 - Issue 1
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Organic Light-Emitting Materials and Devices

Characterization of the Multi-Layer Encapsulation of Thin Films on Ethylene Terephthalate (PET)

Jin-Woo Han Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University, Seodaemoon-ku, Seoul, Korea
,
Hee-Jin Kang Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University, Seodaemoon-ku, Seoul, Korea
,
Jong-Hwan Kim Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University, Seodaemoon-ku, Seoul, Korea
,
Young-Hwan Kim Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University, Seodaemoon-ku, Seoul, Korea
,
Dae-Shik Seo Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University, Seodaemoon-ku, Seoul, KoreaCorrespondence[email protected]
,
Yong-Hoon Kim Information Display Research Center, Korea Electronics Technology Institute, Yatap-dong, Gyeonggi-do, Korea
,
Dae-Gyu Moon Information Display Research Center, Korea Electronics Technology Institute, Yatap-dong, Gyeonggi-do, Korea
&
Jung-In Han Information Display Research Center, Korea Electronics Technology Institute, Yatap-dong, Gyeonggi-do, Korea
 show all
Pages 255-261 | Published online: 21 Dec 2006
 
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Abstract

In this paper, the inorganic-organic thin film encapsulation layer was newly adopted to protect the organic layer from moisture and oxygen. Using the electron beam, sputter and spin-coater system, the various kinds of inorganic and organic thin-films were deposited onto the Ethylene Terephthalate (PET) and their interface properties between organic and inorganic layer were investigated. In this investigation, the SiON and Polyimide (PI) layer showed the most suitable properties Under these conditions, the WVTR for PET can be reduced from a level of 0.57 g/m2/day (bare substrate) to 1*10−5 g/m2/day after application of a SiON and PI layer. These results indicate that the SiON/PI/SiON/PI/PET barrier coatings have high potential for flexible organic light-emitting diode (OLED) applications.

Acknowledgments

This work was supported by National Research Laboratory program (M1-0412-00-0008) and by the Ministry of Information & Communications of Korea under the Information Technology Research Center (ITRC) Program.

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