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Dynamic Effects and...
Dynamic Effects and Hydrogen Bonding in Mixed-Halide Perovskite Solar Cell Absorbers
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Wilks, Regan G. (author)
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- Erbing, Axel (author)
- Stockholms universitet,Fysikum
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Sadoughi, Golnaz (author)
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Starr, David E. (author)
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Handick, Evelyn (author)
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Meyer, Frank (author)
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Benkert, Andreas (author)
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Iannuzzi, Marcella (author)
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Hauschild, Dirk (author)
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Yang, Wanli (author)
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Blum, Monika (author)
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Weinhardt, Lothar (author)
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Heske, Clemens (author)
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Snaith, Henry J. (author)
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- Odelius, Michael (author)
- Stockholms universitet,Fysikum
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Bär, Marcus (author)
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(creator_code:org_t)
- 2021-04-15
- 2021
- English.
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In: The Journal of Physical Chemistry Letters. - : American Chemical Society (ACS). - 1948-7185. ; 12:16, s. 3885-3890
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The organic component (methylammonium) of CH3NH3PbI3-xClx-based perovskites shows electronic hybridization with the inorganic framework via H-bonding between N and I sites. Femtosecond dynamics induced by core excitation are shown to strongly influence the measured X-ray emission spectra and the resonant inelastic soft X-ray scattering of the organic components. The N K core excitation leads to a greatly increased N-H bond length that modifies and strengthens the interaction with the inorganic framework compared to that in the ground state. The study indicates that excited-state dynamics must be accounted for in spectroscopic studies of this perovskite solar cell material, and the organic-inorganic hybridization interaction suggests new avenues for probing the electronic structure of this class of materials. It is incidentally shown that beam damage to the methylamine component can be avoided by moving the sample under the soft X-ray beam to minimize exposure and that this procedure is necessary to prevent the creation of experimental artifacts.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Ultrafast phenomena
- Energy
- Electronic structure
- Resonance structures
- Perovskites
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Wilks, Regan G.
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Erbing, Axel
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Sadoughi, Golnaz
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Starr, David E.
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Handick, Evelyn
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Meyer, Frank
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show more...
-
Benkert, Andreas
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Iannuzzi, Marcel ...
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Hauschild, Dirk
-
Yang, Wanli
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Blum, Monika
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Weinhardt, Lotha ...
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Heske, Clemens
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Snaith, Henry J.
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Odelius, Michael
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Bär, Marcus
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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The Journal of P ...
- By the university
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Stockholm University