Temperature-Dependent Intensity Modulated Two-Photon Excited Fluorescence Microscopy for High Resolution Mapping of Charge Carrier Dynamics
(2023) In ACS Physical Chemistry Au 3(5). p.467-476- Abstract
We present a temperature-dependent intensity modulated two-photon excited fluorescence microscopy technique that enables high-resolution quantitative mapping of charge carrier dynamics in perovskite microcrystal film. By disentangling the emission into harmonics of the excitation modulation frequency, we analyze the first and second order charge carrier recombination processes, including potential accumulation effects. Our approach allows for a quantitative comparison of different emission channels at a micrometer resolution. To demonstrate the effectiveness of the method, we applied it to a methylammonium lead bromide perovskite microcrystal film. We investigated the temperature-dependent modulated imaging, encompassing the exciton... (More)
We present a temperature-dependent intensity modulated two-photon excited fluorescence microscopy technique that enables high-resolution quantitative mapping of charge carrier dynamics in perovskite microcrystal film. By disentangling the emission into harmonics of the excitation modulation frequency, we analyze the first and second order charge carrier recombination processes, including potential accumulation effects. Our approach allows for a quantitative comparison of different emission channels at a micrometer resolution. To demonstrate the effectiveness of the method, we applied it to a methylammonium lead bromide perovskite microcrystal film. We investigated the temperature-dependent modulated imaging, encompassing the exciton dissociation-association and charge carrier trapping-detrapping equilibrium. Additionally, we explored the potential freezing out of traps and the phase transition occurring at low temperatures.
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- author
- Shi, Qi LU ; Kumar, Pushpendra LU and Pullerits, Tönu LU
- organization
- publishing date
- 2023-09-27
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- first-order recombination, intensity modulation technique, MAPbBr perovskite, phase transition, second-order recombination
- in
- ACS Physical Chemistry Au
- volume
- 3
- issue
- 5
- pages
- 10 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:37780538
- scopus:85165908914
- ISSN
- 2694-2445
- DOI
- 10.1021/acsphyschemau.3c00013
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2023 The Authors. Published by American Chemical Society.
- id
- c3b26562-68d3-4130-a2e3-3fbb75e9d15c
- date added to LUP
- 2024-01-15 15:21:40
- date last changed
- 2024-04-16 01:48:07
@article{c3b26562-68d3-4130-a2e3-3fbb75e9d15c, abstract = {{<p>We present a temperature-dependent intensity modulated two-photon excited fluorescence microscopy technique that enables high-resolution quantitative mapping of charge carrier dynamics in perovskite microcrystal film. By disentangling the emission into harmonics of the excitation modulation frequency, we analyze the first and second order charge carrier recombination processes, including potential accumulation effects. Our approach allows for a quantitative comparison of different emission channels at a micrometer resolution. To demonstrate the effectiveness of the method, we applied it to a methylammonium lead bromide perovskite microcrystal film. We investigated the temperature-dependent modulated imaging, encompassing the exciton dissociation-association and charge carrier trapping-detrapping equilibrium. Additionally, we explored the potential freezing out of traps and the phase transition occurring at low temperatures.</p>}}, author = {{Shi, Qi and Kumar, Pushpendra and Pullerits, Tönu}}, issn = {{2694-2445}}, keywords = {{first-order recombination; intensity modulation technique; MAPbBr perovskite; phase transition; second-order recombination}}, language = {{eng}}, month = {{09}}, number = {{5}}, pages = {{467--476}}, publisher = {{The American Chemical Society (ACS)}}, series = {{ACS Physical Chemistry Au}}, title = {{Temperature-Dependent Intensity Modulated Two-Photon Excited Fluorescence Microscopy for High Resolution Mapping of Charge Carrier Dynamics}}, url = {{http://dx.doi.org/10.1021/acsphyschemau.3c00013}}, doi = {{10.1021/acsphyschemau.3c00013}}, volume = {{3}}, year = {{2023}}, }