Correlation of Photoluminescence and Structural Morphologies at the Individual Nanoparticle Level

Abstract
Single-particle spectroscopy have demonstrated great potential for analyzing the microscopic behavior of various nanoparticles (NPs). However, high-resolution optical imaging of these materials at the nanoscale is still very challenging. Here, we present an experimental setup that combines the high sensitivity of time-correlated single-photon counting (TCSPC) techniques with atomic force microscopy (AFM). This system enabled us to have a single-photon emitter detection with a time resolution of 120 ps and a spatial resolution of 5 nm. We utilized our setup to investigate the photoluminescence (PL) characteristics of both zero-dimensional (0D) and threedimensional (3D) perovskite nanocrystals (PNCs) and establish a correlation between the particle’s sizes, their PL blinking, and the lifetime behavior. Our system demonstrates an unprecedented level of information, opening the door to understanding the morphology-luminescence correlation of various nanosystems.

Citation
Gutiérrez-Arzaluz, L., Ahmed, G. H., Yang, H., Shikin, S., Bakr, O. M., Malko, A. V., & Mohammed, O. F. (2020). Correlation of Photoluminescence and Structural Morphologies at the Individual Nanoparticle Level. The Journal of Physical Chemistry A. doi:10.1021/acs.jpca.0c02340

Acknowledgements
The authors gratefully acknowledge financial support from King Abdullah University of Science and Technology (KAUST).

Publisher
American Chemical Society (ACS)

Journal
The Journal of Physical Chemistry A

DOI
10.1021/acs.jpca.0c02340

Additional Links
https://pubs.acs.org/doi/abs/10.1021/acs.jpca.0c02340

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