Photoinduced Single- and Multiple-Electron Dynamics Processes Enhanced by Quantum Confinement in Lead Halide Perovskite Quantum Dots
Abstract
Methylammonium lead iodide perovskite (MAPbI3) is a promising material for photovoltaic devices. A modification of MAPbI3 into confined nanostructures is expected to further increase efficiency of solar energy conversion. Photoexcited dynamic processes in a MAPbI3 quantum dot (QD) have been modeled by many-body perturbation theory and nonadiabatic dynamics. A photoexcitation is followed by either exciton cooling (EC), its radiative (RR) or nonradiative recombination (NRR), or multiexciton generation (MEG) processes. Computed times of these processes fall in the order of MEG < EC < RR < NRR, where MEG is on the order of a few femtoseconds, EC is in the picosecond range, while RR and NRR are on the order of nanoseconds. Computed time scales indicate which electronic transition pathways can contribute to increase in charge collection efficiency. Simulated mechanisms of relaxation and their rates show that quantum confinement promotes MEG in MAPbI3 QDs.
- Authors:
-
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
- Department of Physics, North Dakota State University, Fargo, North Dakota 58102, United States
- L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan, National University of Science and Technology “MISIS”, Moscow, 119049 Russian Federation
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States, Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58102, United States
- Publication Date:
- Research Org.:
- Univ. of California, Oakland, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1366550
- Alternate Identifier(s):
- OSTI ID: 1372297
- Grant/Contract Number:
- AC02-05CH11231; CHE-1413614; CHE-1460872
- Resource Type:
- Published Article
- Journal Name:
- Journal of Physical Chemistry Letters
- Additional Journal Information:
- Journal Name: Journal of Physical Chemistry Letters Journal Volume: 8 Journal Issue: 13; Journal ID: ISSN 1948-7185
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Vogel, Dayton J., Kryjevski, Andrei, Inerbaev, Talgat, and Kilin, Dmitri S. Photoinduced Single- and Multiple-Electron Dynamics Processes Enhanced by Quantum Confinement in Lead Halide Perovskite Quantum Dots. United States: N. p., 2017.
Web. doi:10.1021/acs.jpclett.6b03048.
Vogel, Dayton J., Kryjevski, Andrei, Inerbaev, Talgat, & Kilin, Dmitri S. Photoinduced Single- and Multiple-Electron Dynamics Processes Enhanced by Quantum Confinement in Lead Halide Perovskite Quantum Dots. United States. https://doi.org/10.1021/acs.jpclett.6b03048
Vogel, Dayton J., Kryjevski, Andrei, Inerbaev, Talgat, and Kilin, Dmitri S. Wed .
"Photoinduced Single- and Multiple-Electron Dynamics Processes Enhanced by Quantum Confinement in Lead Halide Perovskite Quantum Dots". United States. https://doi.org/10.1021/acs.jpclett.6b03048.
@article{osti_1366550,
title = {Photoinduced Single- and Multiple-Electron Dynamics Processes Enhanced by Quantum Confinement in Lead Halide Perovskite Quantum Dots},
author = {Vogel, Dayton J. and Kryjevski, Andrei and Inerbaev, Talgat and Kilin, Dmitri S.},
abstractNote = {Methylammonium lead iodide perovskite (MAPbI3) is a promising material for photovoltaic devices. A modification of MAPbI3 into confined nanostructures is expected to further increase efficiency of solar energy conversion. Photoexcited dynamic processes in a MAPbI3 quantum dot (QD) have been modeled by many-body perturbation theory and nonadiabatic dynamics. A photoexcitation is followed by either exciton cooling (EC), its radiative (RR) or nonradiative recombination (NRR), or multiexciton generation (MEG) processes. Computed times of these processes fall in the order of MEG < EC < RR < NRR, where MEG is on the order of a few femtoseconds, EC is in the picosecond range, while RR and NRR are on the order of nanoseconds. Computed time scales indicate which electronic transition pathways can contribute to increase in charge collection efficiency. Simulated mechanisms of relaxation and their rates show that quantum confinement promotes MEG in MAPbI3 QDs.},
doi = {10.1021/acs.jpclett.6b03048},
journal = {Journal of Physical Chemistry Letters},
number = 13,
volume = 8,
place = {United States},
year = {Wed Mar 22 00:00:00 EDT 2017},
month = {Wed Mar 22 00:00:00 EDT 2017}
}
https://doi.org/10.1021/acs.jpclett.6b03048
Web of Science
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