摘要
Noble metal nanoparticles-induced localized surface plasmon resonance as a useful approach has been widely used in solar cells including perovskite solar cells (PSCs) to improve their light-harvesting. Herein, we synthesize Ag SiO2 core-shell nanocubes and investigate their application in CH3NH3PbI3-based PSCs due to both the large local EM field induced by the nanocube with sharp corners and the effective avoidance of exciton/carrier recombination at the surfaces of Ag nanocubes via covering a 5 nm ultrathin SiO2 shell. Incorporating an appropriate concentration of Ag SiO2 nanocubes into the CH3NH3PbI3 PSCs realizes a best-performing efficiency of 17.22% with an enhancement factor of 18.1%. Indepth studies on the plasmon-enhanced working mechanism of AgSiO2 nanocubes with UV-vis absorption spectra, steady-state and time-resolved transient photoluminescence, and electrochemical impedance spectroscopy characterizations eventually demonstrate both the increasing light harvesting and the improving charge transportation and extraction contribute to better performances of PSCs.
源语言 | 英语 |
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页(从-至) | 3605-3613 |
页数 | 9 |
期刊 | ACS Applied Energy Materials |
卷 | 2 |
期 | 5 |
DOI | |
出版状态 | 已出版 - 28 5月 2019 |