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Terahertz Emission: Terahertz Emission from Hybrid Perovskites Driven by Ultrafast Charge Separation and Strong Electron–Phonon Coupling (Adv. Mater. 11/2018)
Author(s) -
Guzelturk Burak,
Belisle Rebecca A.,
Smith Matthew D.,
Bruening Karsten,
Prasanna Rohit,
Yuan Yakun,
Gopalan Venkatraman,
Tassone Christopher J.,
Karunadasa Hemamala I.,
McGehee Michael D.,
Lindenberg Aaron M.
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201870079
Subject(s) - terahertz radiation , materials science , ultrashort pulse , phonon , electron , charge carrier , optoelectronics , lattice (music) , coupling (piping) , terahertz spectroscopy and technology , condensed matter physics , absorption (acoustics) , optics , laser , physics , quantum mechanics , acoustics , metallurgy , composite material
Terahertz radiation is emitted from hybrid organic–inorganic perovskites following light absorption. This enables an ultrafast probing of the charge‐separation dynamics and carrier–lattice coupling, even under illumination conditions equivalent to 1 sun, as described by Burak Guzelturk, Aaron M. Lindenberg, and co‐workers in article number 1704737 . Initial charge separation is shown to be diffusive in nature and not driven by surface fields or ferroelectricity. Strong carrier–lattice coupling is evidenced via coherently driven terahertz‐frequency lattice oscillations.