Abstract
The labile perovskite structure can undergo catastrophic deterioration when exposed to both ultraviolet (UV) and oxygen at the same time. The introduction of down conversion layer of TIPS‐PEN can not only improve the circuit photocurrent by converting UV light into multiple excitons, but also enhance the open‐circuit voltage owing to a better matched energy level alignment. Consequently, the TIPS‐PEN incorporated PVSCs achieve the optimal efficiency up to 22.92% along with significantly enhanced UV endurance which can retain 80% of its primitive efficiency under continuous UV light soaking for 150 h. More details are discussed in the article by Tan et al. on page 1057—1065.image
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