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Efficiency Enhancement of Br-Based Perovskite Solar Cells Based on Localized Surface Plasmon Resonance with Mo@MoS2
Risu Na1, Wenhui Zhang2, Ruoqian Gao3
1State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.
Abstract:
Carbon-electrode Br-based perovskite solar cells (PSCs) show potential application because of high open-circuit voltage and stability. Utilizing the localized surface plasmon resonance (LSPR) effect of metal-semiconductor core-shell nanostructures may alter the light absorption range of PSCs and enhance their short-circuit current density. In this study, an antisolvent-mediated strategy for interfacial modification at both perovskite grain boundaries and perovskite/carbon electrode interfaces was developed using Mo@MoS2 core-shell nanospheres. By tuning the Mo:MoS2 ratio, we achieved concurrent control of crystallization dynamics and photon management in MAPbBr3 solar cells. The modified devices achieved significant improvements in external quantum efficiency within a wavelength range above 525 nm, showcasing improved spectral utilization. An average power conversion efficiency of 9.2% (best of 9.62%) was obtained with an optimized plasmonic effect, representing an improvement of 12% over reference cells. This work demonstrates the potential of LSPR core-shell nanostructures to unlock new efficiencies in stable, carbon-electrode perovskite photovoltaics by tailored interfacial and optical engineering.
