Plasmonic Chiral Perovskite Photodetector with High Performance by Coupling Chiral Plasmonic Effects
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Hybrid organic-inorganic chiral perovskites are considered important candidates as alternative active layers due to their outstanding optoelectronic properties such as circulary polarized light (CPL) detection and effective light absorption. Chiral plasmonic effect is anticipated to dramatically enhance the chiroptical properties of perovskites through improved chiral near-field. In this work, we aim to develop unprecedented chiral perovskite photodetectors using the [(R, S)-MBA]2PbI4 perovskites combined with Au nanoparticles stabilized by cysteine ligands (L, D-cys AuNP). We show that the incorporation of cys-AuNP into the active layer enhanced CPL detection capabilities and light absorption owing to the plasmonic effect. The established synergy between the two components can open the pathway to significantly improve the chiroptical device performance.