| 학회 |
한국재료학회 |
| 학술대회 |
2008년 봄 (05/22 ~ 05/23, 상록리조트) |
| 권호 |
14권 1호 |
| 발표분야 |
에너지환경/생체재료 |
| 제목 |
Evaluation of moisture permeation for metal barrier coating on polymer substrate |
| 초록 |
The moisture (water vapor) is detrimental to the performance of flexible organic light-emitting devices (OLEDs) and solar cells. They cause degradation of the organic charge carriers and oxidation at the organic-cathode interface, resulting in malfunctioning of components such as dark spots and pixel shrinkage in the OLED. In this paper, a novel weight gain test (WGT) has been demonstrated to measure the permeation property of water vapor through good barrier-layer coated polymer substrates. By using the WGT, the values of solubility, diffusivity and permeability for a sample are obtained with a simple experimental setup such as an electronic balance and an environmental chamber. The permeability values obtained from WGT are 1.0x10-15 sec, 3.98x10-16 sec and 1.21x10-17 sec, respectively. These values from WGT are similar to the value from MOCON test. Therefore, the WGT method can be potentially applicable to measure the water-vapor permeation properties for the samples that have a good barrier property and a small irregular shape. |
| 저자 |
조영래1, 최영준1, 하상훈1, 김회봉1, 장창수2
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| 소속 |
1부산대, 2메릴랜드대 |
| 키워드 |
Flexible electronic devise; Passivation; Moisture permeation; Barrier layer
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| E-Mail |
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