About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
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Innovative Process Design and Processing for Advanced Structural Materials
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Presentation Title |
K-6: Development of Highly Stretchable and Impermeable Encapsulation by Applying Wavy-structure to Thermally Grown Silicon Dioxide |
Author(s) |
Hangeul Kim, Gyeong-Seok Hwang, Hyeonji Yoo, Sohyeon Lee, Ju-Young Kim |
On-Site Speaker (Planned) |
Ju-Young Kim |
Abstract Scope |
Stretchable organic light-emitting diodes require encapsulations with high stretchable and low water-vapor transmittance rate to ensure long-term operation. A thermally-grown silicon dioxide has an extremely water vapor transmittance rate due to a high density without defects, but it has low an elastic limit and shows a brittle fracture. Fortunately, stretchability can be increased by structure design of materials. Here, we develop the highly stretchable and impermeable encapsulations by applying a wavy-structure to the thermally-grown SiO2. By theoretically analyzing mechanical behaviors of wavy-structured SiO2, the correlation between stretchability and characteristics of wavy-structured SiO2 were carried out. Through barrier properties after cyclic deformation with 90% of stretchability during 1000 cycles, it was confirmed that mechanical reliability of the wavy-structured SiO2.
This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Korean government (MSIT) (2020R1A5A6017701) and the Ministry of Trade, Industry and Energy (MOTIE, Korea) (20011735) |