摘要
Quantum dots(QDs)have attracted significant attention in devices such as solar cells and photodetectors.Although polymer-based hole transport layers(HTLs)have been employed in QD devices,their mechanical flexibility remains underexplored and insufficient for wearable applications.Here,we present a novel interlayer design for PbS QD solar cells and photodetectors by incorporating a low-cost thermoplastic elastomer,SEBS(styrene-ethylene-butylene-styrene),into the polymer HTL.The addition of 10 wt%SEBS promotes a more ordered molecular packing of PM6.As a result,PbS QD solar cells achieved a power conversion efficiency of 11.43%,while the corresponding photodetectors exhibited a high specific detectivity of 2.12×10^(13) Jones—among the highest reported values.Beyond performance improvements,SEBS significantly enhances the mechanical flexibility of the HTLs.This work presents a new and effective strategy for simultaneously optimizing the optoelectronic performance and mechanical robustness of QD-based devices.
基金
support from the Technology Development Program of Jilin Province(No.YDZJ202201ZYTS640)
the Opening Project of Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education,Jianghan University(No.JDGD-202304)
the Opening Project of Hubei Longzhong Laboratory(2022KF-O1)。
