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Effect of alloying ...
Effect of alloying on the dynamics of coherent acoustic phonons in bismuth double perovskite single crystals
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- Lin, Xihong (författare)
- South China Normal Univ, Peoples R China
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- Wu, Bo (författare)
- South China Normal Univ, Peoples R China
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- Ning, Weihua (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Feng, Minjun (författare)
- Nanyang Technol Univ, Singapore
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- Xu, Qiang (författare)
- Nanyang Technol Univ, Singapore
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- Gao, Feng (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Sum, Tze Chien (författare)
- Nanyang Technol Univ, Singapore
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- Zhou, Guofu (författare)
- South China Normal Univ, Peoples R China; Shenzhen Guohua Optoelect Tech Co Ltd, Peoples R China
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(creator_code:org_t)
- Optical Society of America, 2021
- 2021
- Engelska.
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Ingår i: Optics Express. - : Optical Society of America. - 1094-4087. ; 29:5, s. 7948-7955
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The bismuth double perovskite Cs2AgBiBr6 has been regarded as a potential candidate for lead-free perovskite photovoltaics. A detailed study on the coherent acoustic phonon dynamics in the pure, Sb- and T1-alloyed Cs2AgBiBr6 single crystals is performed to understand the effects of alloying on the phonon dynamics and band edge characteristics. The coherent acoustic phonon frequencies are found to be independent of the alloying, while the damping rates are highly dependent on the alloying. Based on the mechanism of coherent acoustic phonon damping, a technique has been successfully developed that can accurately extract the absorption spectra near the indirect band gap for these single crystals with coefficients on the order of 10(2) cm(-1). (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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