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International Journal of Photoenergy
Volume 2015, Article ID 276404, 7 pages
Research Article

Optimization of Solar Module Encapsulant Lamination by Optical Constant Determination of Ethylene-Vinyl Acetate

1Department of Opto-Electronic System Engineering, Minghsin University of Science and Technology, No. 1 Xinxing Road, Xinfeng, Hsinchu 304, Taiwan
2Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu 310, Taiwan
3Department of Electronics Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan

Received 21 July 2014; Revised 9 November 2014; Accepted 19 January 2015

Academic Editor: Harald Hoppe

Copyright © 2015 Bing-Mau Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This investigation elucidates the physical properties of ethylene-vinyl acetate (EVA) used in the lamination process of module encapsulation and the module performance from the optical transmission to the photoelectric power. In module encapsulation, the effects of the lamination parameters on the module performance, transmittance, and stack adhesion have been considered as they were found to influence the reliability of the module. The determination of the optical constants of EVA may serve as a nondestructive analytical method for optimizing the module encapsulation, on the basis of its effects on the optical transmittance, gel content, peel strength, and performance power.