Towards High Throughput Texturing of Polymer Foils for Enhanced Light Trapping in Flexible Perovskite Solar Cells using Roll‐to‐roll Hot Embossing

摘要： In this work, a high throughput method is presented to texture polymer foils by roll-to-roll hot embossing with the objective of increasing the substrate haze factor. Triple cation perovskite solar cells were deposited onto these structured substrate showing an efficiency increase up to 15 % (relative) compared to the reference flat device, due to an enhanced light absorption.