Date

Place

Room H (Room Hall 1, 1F)
P2. Poster Session II
August 21, 2015 (Friday)
14:00 ~ 15:30

[P2-110]
14:00 ~ 15:30
Title:Hybrid Multilayer Barrier for Flexible OLEDs
Se Hee Lim, Seung-Woo Seo, Iljoong Kang, and Sung Min Cho (Sungkyunkwan Univ., Korea)
Abstract: Organic light-emitting diodes require moisture barrier to protect them from oxidative species such as moisture and oxygen because of the high sensitivity of organic materials and low work-function metals.? Recently, the display and lighting markets are moving toward foldable and flexible devices. Flexible thin-film encapsulation is considered indispensable for future flexible electronics.To achieve the flexible moisture barrier film, the best practice is to make the barriers as organic-inorganic multilayer structure. The inorganic layers are deposited by atomic layer deposition and organic layer is a plasma polymer synthesized with n-hexane monomer using plasma enhanced CVD. The inorganic layers work as moisture barrier and the organic layers provide the flexibility and planarization.We studied the hybrid multilayer structure of inorganic layers and organic layers to evaluate how much the moisture barrier property could be enhanced. When inorganic layers were divided by a number of ultra-thin inorganic layers which were sandwiched by polymer layers, the barrier property and flexibility were enhanced than the single inorganic layer. The WVTR values were checked by an electrical and optical Ca test in a climate cabinet under controlled environmental conditions of 85oC and 85% relative humidity.
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