Woven textile-based solar cells: engineering wearable photovoltaics by conformal coating of perovskite thin films on ZnO-modified cotton fibers
Аннотация
This study describes the creation of a flexible and washable photovoltaic device made of textiles by putting a layer of CH3NH3PbI3 perovskite on cotton fibers that have been modified with ZnO nanoparticles. Under AM 1.5G light, the device had a power conversion efficiency (PCE) of 3.7%, a short-circuit current density (J<sub>sc</sub>) of 8.2 mA/cm<sup>2</sup>, an open-circuit voltage (V<sub>oc</sub>) of 0.78 V, and a fill factor (FF) of 0.58. The fabricated textile photovoltaic was very durable in the wash, keeping more than 80% of its original PCE after 5 gentle wash cycles and 62% after 10 cycles. After washing, SEM analysis showed that the performance drop was mostly caused by the spread of micro-cracks and localized delamination, not by the complete dissolution of the perovskite. These findings underscore the potential of perovskite-coated textiles as a viable medium for wearable solar energy harvesting. Future work will focus on improving layer interfaces, looking into new ways to encapsulate things, and testing how well they work when put under mechanical stress.
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