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Degradation behavior of thin-film Si photovoltaic modules by hygrothermal and thermal cyclic stresses was studied. Degradation progresses along the scribe lines for integration and from the slit on back sheet for taking out interconnector ribbons. Not only acetic acid generated by hydrolysis reaction between ethylene-vinyl acetate encapsulant and penetrating water vapor but also water vapor itself...
Silicon spheres were fabricated from melted silicon by dropping method. In order to improve the quality of silicon spheres, we developed a novel seeding crystallization technique for the solidification of silicon droplets in high-speed dropping. High-pure silicon powders were used as seeding source material. They were embedded into the silicon droplets by floating and confining within a specific region...
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