Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
DOI: https://doi.org/10.29363/nanoge.hopv.2022.291
Publication date: 20th April 2022
Lead halide perovskite nanocrystals (PNCs) have garnered much attention from the scientific community due to their fluorescence quantum yield, tunable size, bandgap, versatile morphology, thermal and photo-stability, etc. With the addition of QDs into the donor CsPbBr3 and CsPbCl3 PNCs as-synthesized by ligand-assisted precipitation method, there is a sequential drop in the fluorescence intensity as well as an average lifetime with a simultaneous increase in these values for QDs, which ensures the presence of FRET in such systems. The FRET efficiency is found to be higher in case of CsPbBr3 PNCs (85 %) as compared to CsPbCl3 (5 %). The two-probe measurements suggest a remarkable current enhancement for the blend structure of PNCs with QDs, compared to the pristine PNCs. We observe FRET-induced conduction mechanism along with negative differential resistance and negligible hysteresis for CsPbBr3 PNCs, which can pave a new path in studying the high performance-based photovoltaics and optoelectronics.
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