Experimental study demonstrates enhanced photoinduced hole transfer in amine-free perovskite nanocrystal hybrids, suggesting improved design strategies for photonic devices.
Outstanding optoelectronic properties of cesium lead bromide (CsPbBr 3 ) perovskite nanocrystals (PNCs) are recognized in various photonic devices. The surface chemistry of PNCs determines the excited states of PNCs, and their interactions with charge drive redox-active molecules. Here, we have investigated the potential difference between the surface modification of different CsPbBr 3 -based PNCs (amine-free and amine-based) with the hole-accepting organic molecule, i.e., 7,7-diethyl-5,7-dihydroindeno[2,1- b ] carbazole (SPS-IND-Cbz). We have evaluated photoinduced hole transfer (PHT) with the steady-state photoluminescence and lifetime decay curves. Excitingly, the resulting PHT in amine-free CsPbBr 3 PNC was nearly twice that of the amine-based CsPbBr 3 PNC. Further, we have studied the photocurrent density of amine-free CsPbBr 3 PNCs in the newly introduced organic molecule (SPS-IND-Cbz), enhancing the photocurrent responsivity, which could open a promising perspective for implementing these fascinating materials in various photonic strategies.
No takes yet. Share an insight, caveat, or question.
Swetha et al. (2023) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: