상압 플라즈마 표면처리를 통한 태양광모듈 커버글라스와 불소계 코팅의 응착력 향상

초록

We propose a method for improving the reliability of a solar cell by applying a fluorinated surface coatingto protect the cell from the outdoor environment using an atmospheric pressure plasma (APP) treatment. An APP sourceis operated by radio frequency (RF) power, Ar gas, and O₂gas. APP treatment can remove organic contaminants fromthe surface and improve other surface properties such as the surface free energy. We determined the optimal APPparameters to maximize the surface free energy by using the dyne pen test. Then we used the scratch test in order toconfirm the correlation between the APP parameters and the surface properties by measuring the surface free energy andadhesive characteristics of the coating. Consequently, an increase in the surface free energy of the cover glass causedan improvement in the adhesion between the coating layer and the cover glass. After treatment, adhesion between thecoating and cover glass was improved by 35%.

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