The demand on flexible and stretchable energy harvesting devices is rapidly increasing, driven by the substantial market growth of a wide range of applications including wearables and humane robotics. In this talk, we will demonstrate a deep reactive ion etching based corrugation technique to transform large-scale commercial rigid solar cells with interdigitated back contacts into ultra-flexible and ultra-stretchable cells with negligible degradation in the initial efficiency. The design of the corrugated patterns to achieve the desired performance and characteristics of the solar cells in terms of flexibility, stretchability, specific weight, power output and heat dissipation will be discussed. Finally, the encapsulation of the solar cells for a reliable and mechanically robust performance will be explained.
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