Quantifying Polaron Formation and Charge Carrier Cooling in Lead-Iodide Perovskites.
Sign Up to like & getrecommendations! Published in 2018 at "Advanced materials"
DOI: 10.1002/adma.201707312
Abstract: Notwithstanding the success of lead-halide perovskites in emerging solar energy conversion technologies, many of the fundamental photophysical phenomena in this material remain debated. Here, the initial steps following photogeneration of free charge carriers in lead-iodide… read more here.
Keywords: carrier cooling; formation; carrier; charge carrier ... See more keywords
Elucidating the Unique Hot Carrier Cooling in Two-Dimensional Inorganic Halide Perovskites: The Role of Out-of-Plane Carrier-Phonon Coupling.
Sign Up to like & getrecommendations! Published in 2022 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c00203
Abstract: Two-dimensional (2D) halide perovskites represent the natural semiconductor quantum wells (QWs), which hold great promise for optoelectronics. However, due to the hybrid structure of Ruddlesden-Popper 2D perovskites, the intrinsic nature of hot-carrier kinetics remains shielded… read more here.
Keywords: phonon; carrier cooling; carrier; hot carrier ... See more keywords
Facet Engineering for Decelerated Carrier Cooling in Polyhedral Perovskite Nanocrystals.
Sign Up to like & getrecommendations! Published in 2023 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c05107
Abstract: We report here the hot carrier (HC) cooling time scales within polyhedral CsPbBr3 nanocrystals (NCs) characterized by different numbers of facets (6 to 26) utilizing a femtosecond upconversion setup. Interestingly, the observed cooling time scale… read more here.
Keywords: decelerated carrier; cooling polyhedral; carrier cooling; engineering decelerated ... See more keywords
Hot Carrier Cooling and Trapping in Atomically Thin WS2 Probed by Three-Pulse Femtosecond Spectroscopy
Sign Up to like & getrecommendations! Published in 2023 at "ACS Nano"
DOI: 10.1021/acsnano.2c10479
Abstract: Transition metal dichalcogenides (TMDs) have shown outstanding semiconducting properties which make them promising materials for next-generation optoelectronic and electronic devices. These properties are imparted by fundamental carrier–carrier and carrier–phonon interactions that are foundational to hot… read more here.
Keywords: femtosecond; carrier; ws2; spectroscopy ... See more keywords
Confinement and Exciton Binding Energy Effects on Hot Carrier Cooling in Lead Halide Perovskite Nanomaterials
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DOI: 10.1021/acsnano.2c12373
Abstract: The relaxation of the above-gap (“hot”) carriers in lead halide perovskites (LHPs) is important for applications in photovoltaics and offers insights into carrier–carrier and carrier–phonon interactions. However, the role of quantum confinement in the hot… read more here.
Keywords: carrier; carrier carrier; hot carrier; lead halide ... See more keywords
Tuning Hot Carrier Cooling Dynamics by Dielectric Confinement in Two-Dimensional Hybrid Perovskite Crystals.
Sign Up to like & getrecommendations! Published in 2019 at "ACS nano"
DOI: 10.1021/acsnano.9b04085
Abstract: Hot-carrier cooling is one of the critical photophysical processes that significantly influence the performance of hybrid perovskite-based optoelectronic devices. The extraction of hot carriers at the device interface is very challenging because of their ultrashort… read more here.
Keywords: carrier cooling; dimensional hybrid; cooling dynamics; carrier ... See more keywords