On the Optical Spectroscopy, Exciton Dynamics, Ergodicity and Hole-Trapping of/in Quantum Dots and Perovskite Nano-Crystals

Quantum dots (QDs) and Perovskite Nano-Crystals (PNCs) have been the choicest set
of nanomaterials for optoelectronic applications.1 Strong quest has been in place in order to answer the questions outlined below:

Can we solve the problems of blueing, blinking and bleaching of QDs? [2,3]

Whether QDs/PNCs follow the well-known Kasha’s rule and Vavilov’s rule? [4]

Is there any new way to improve the brightness of the QDs/PNCs other than the PLQY
channel? [5]

Is it possible to observe memory effect and ergodicity in the optical behaviour of QDs/PNCs? [6]

Do different regions of the solar spectrum control the exciton dynamics of PNCs
differently? How is the variation of the extent of hole trapping (detrimental or beneficial?) in QDs/PNCs?7

How is the exciton dynamics and bioimaging application potential of a sustainable
QD/PNC?

Plausible answers of the above-mentioned questions will be elaborated.

References:
1. (a) Nano Lett. 2023, 23, 2443-2453. (b) Adv. Energy Mater. 2021, 11, 2101693. (c) Adv. Funct. Mater.2022, 32, 2207662. (d) ACS Nano 2021, 15, 10775-10981.

2. (a) Phys. Chem. Chem. Phys. 2022, 24, 8578-8590. (b) J. Phys. Chem. C 2016, 120, 3483-3491.

3. (a) J. Phys. Chem. Lett. 2019, 10, 4330-4338. (b) Phys. Chem. Chem. Phys. 2018, 20, 10332-10344.

4. (a) J. Phys. Chem. Lett. 2022, 13, 2404-2417. (b) J. Phys. Chem. Lett. 2020, 11, 1702-1707. (c) J.Phys. Chem. C 2019, 123, 6922-6933. (d) J. Phys. Chem. C 2019, 123, 28502-28510.

5. Adv. Optical Mater. 2025, 13, 2402608.

6. (a) Nanoscale Adv. 2019, 1, 3506-3513. (b) J. Phys. Chem. Lett. 2021, 12, 10169-10174.

7. (a) J. Phys. Chem. Lett. 2021, 12, 1426-1431. (b) J. Phys. Chem. Lett. 2023, 14, 260-266.