Abstract
The purpose of this study is to bring out strain effects on outputs of polycrystalline silicon solar cells. Strains on crystalline silicon change the bandgap which relates to the open circuit voltage of solar cells. Strains are added by putting a load on a specimen. Strains are evaluated by the stress analysis using Finite Element Analysis and the measurement using strain gauges. The specimen was designed which can deliver 0.21 % tensile and compressive strain on the solar cells. In order to deliver strains on a base plate to solar cells, A7075-T651 was chosen as the base plate material. The base plate and solar cell modules were bonded by an epoxy adhesive. 1-V characteristics of the specimen were measured by exposing incandescent light to the specimen and the maximum output of the specimen was calculated. The maximum output of the specimen decreases 21 % with 0.126 % tensile strain.
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