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Dynamic THz signatu...
Dynamic THz signatures of charge-lattice correlations
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- Cooke, David G. (författare)
- McGill Univ, Canada
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- Lan, Yang (författare)
- McGill Univ, Canada
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- Dringoli, Benjamin J. (författare)
- McGill Univ, Canada
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- Valverde-Chavez, David A. (författare)
- McGill Univ, Canada
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- Ponseca, Carlito (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Sutton, Mark (författare)
- McGill Univ, Canada
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- He, Yihui (författare)
- Northwestern Univ, IL 60208 USA
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- Kanatzidis, Mercouri G. (författare)
- Northwestern Univ, IL 60208 USA
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(creator_code:org_t)
- IEEE, 2020
- 2020
- Engelska.
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Ingår i: 2020 45TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ). - : IEEE. - 9781728166209
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- The hybrid metal halide perovskites have shown enormous promise for optoelectronic devices, including efficient photovoltaics, however their insensitivity to defects has remained puzzling. Polaron correlations have been cited as a possible means to protect charge carriers from defect scattering. In this paper, we show time-resolved THz spectroscopy measurements are capable of directly probing polaron correlations via an intra-band coherent beat arising from center-of-mass quasi-particle motion and the internal motion of charge within its self-induced potential. We describe these measurements indicating that charge carriers do indeed exist as polarons, which are coherent for several hundred femtoseconds following photon absorption.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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