Spectral behavior of plasmon enhanced fluorescence in organic-inorganic perovskite quantum dots solutions

Hybrid lead halide perovskite quantum dots are of great interest in different fields of optoelectronic devices for their unique properties. Many efforts have been done to improve their performance. In this work the effect of localized surface plasmon resonance (LSPR) of gold nanoparticles in vicinity of CH3NH3PbBr3 perovskite quantum dots is investigated and the result of spectral overlapping between the fluorescence peak of quantum dots and LSPR peak of nanoparticles is studied. For quantum dots showing emission peak with higher energy than LSPR energy, quenching of fluorescence occurs but for quantum dots with emission peak slightly red shifted compared to LSPR, fluorescence is enhanced by the factor of 2