Optical properties of CsPbBr3 perovskite nanocrystals with silver nanoparticles using a room-temperature synthesis process

Abstract CsPbBr3 nanocrystals (NCs) are all-inorganic perovskite materials with unique optoelectronic properties for their use in next-generation photoluminescent, electroluminescent, and photovoltaic devices. The optical properties of CsPbBr3 nanocrystals can be changed by compositional substitution, phase transition, doping into the perovskite nanostructures, and adding metal nanoparticles for achieving efficient optoelectronic devices. In this work, CsPbBr3 NCs are synthesized by ligand-assisted re-precipitation (LARP) technique. Different concentrations of plasmonic silver nanoparticles are added into CsPbBr3 NCs to get the CsPbBr3 NCs–Ag NPs mixture. The changes in structural and optical properties of CsPbBr3 NCs are analyzed by using XRD and PL spectral analysis. The enhancement, peak shift, and quenching in the PL spectra of CsPbBr3 NCs is observed due to the addition of different concentrations of plasmonic silver nanoparticles. The study provides a facile strategy for tuning and manipulating optical properties of all-inorganic CsPbBr3 NCs by adding silver nanoparticles and utilizing their properties in various future optoelectronic applications.