title: Time-Resolved Measurements of Photocarrier Dynamics in TiS3 Nanoribbons.
abstract: We report synthesis and time-resolved transient absorption measurements of TiS3 nanoribbons. TiS3 nanoribbons were fabricated by direct reaction of titanium and sulfur. Dynamics of the photocarriers in these samples were studied by transient absorption measurements. It was found that following ultrafast injection of nonequilibrium and hot photocarriers, the thermalization, energy relaxation, and exciton formation all occur on a subpicosecond time scale. Several key parameters describing the dynamical properties of photocarriers, including their recombination lifetime, diffusion coefficient, mobility, and diffusion length, were deduced.
authors.affiliation: Department of Physics and Astronomy, The University of Kansas , Lawrence, Kansas 66045, United States.
authors.forename: Qiannan
authors.initials: Q
authors.lastname: Cui
authors.affiliation: Department of Chemistry and Nebraska Center for Materials and Nanoscience, University of Nebraska - Lincoln , Lincoln, Nebraska 68588, United States.
authors.forename: Alexey
authors.initials: A
authors.lastname: Lipatov
authors.affiliation: Department of Physics and Astronomy, The University of Kansas , Lawrence, Kansas 66045, United States.
authors.forename: Jamie Samantha
authors.initials: JS
authors.lastname: Wilt
authors.affiliation: Department of Physics and Astronomy, The University of Kansas , Lawrence, Kansas 66045, United States.
authors.forename: Matthew Z
authors.initials: MZ
authors.lastname: Bellus
authors.affiliation: Department of Chemistry and Nebraska Center for Materials and Nanoscience, University of Nebraska - Lincoln , Lincoln, Nebraska 68588, United States.
authors.forename: Xiao Cheng
authors.initials: XC
authors.lastname: Zeng
authors.affiliation: Department of Physics and Astronomy, The University of Kansas , Lawrence, Kansas 66045, United States.
authors.forename: Judy
authors.initials: J
authors.lastname: Wu
authors.affiliation: Department of Chemistry and Nebraska Center for Materials and Nanoscience, University of Nebraska - Lincoln , Lincoln, Nebraska 68588, United States.
authors.forename: Alexander
authors.initials: A
authors.lastname: Sinitskii
authors.affiliation: Department of Physics and Astronomy, The University of Kansas , Lawrence, Kansas 66045, United States.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhao
keywords: carrier dynamics; exciton; nanoribbon; titanium trisulfide; transient absorption