Terahertz Emission: Terahertz Emission from Hybrid Perovskites Driven by Ultrafast Charge Separation and Strong Electron–Phonon Coupling (Adv. Mater. 11/2018). Issue 11 (12th March 2018)

• Record Type: Journal Article
• Authors: 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.
• Is Part Of: Advanced materials. Volume 30:Issue 11(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-03-12
• Subjects: carrier–lattice coupling -- charge separation -- hybrid organic–inorganic perovskites -- MAPbI3 -- THz emission -- ultrafast structural dynamics; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201870079
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : 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 number1704737 . 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.