Opening book details…
Can I read Photoexcited Charge Carrier Dynamics in <Mml:math Xmlns:mml=" on EtoBox?
Photoexcited Charge Carrier Dynamics in <Mml:math Xmlns:mml=" by Grad, Lisa ;von Rohr, Fabian ;Zhao, Jianzhou ;Hengsberger, Matthias ;Osterwalder, Jürg is a Materials Science article available to read on EtoBox.
What is Photoexcited Charge Carrier Dynamics in <Mml:math Xmlns:mml=" about?
Antimony selenide (Sb 2 Se 3 ) consists of one-dimensional ribbons that are van der Waals bonded to each other. Due to its favorable optoelectronic properties, it is a promising material for solar energy conversion. Owing to its narrow direct band gap and its high absorption coefficient it is an efficient absorber for solar light. Besides, it is cheap, stable in harsh environments, and abundant with low toxicity. For its use in solar devices, efficient transport of photoexcited charge carriers towards the active interface and long lifetimes at sufficiently high energies are mandatory. Here time-resolved two-photon photoemission experiments on the (100) surface of Sb 2 Se 3 are presented. Data were taken along and perpendicular to the direction of the one-dimensional ribbons in order to unravel the anisotropic lifetimes and relaxation dynamics of photoexcited charge carriers. In both cases, various conduction bands could be populated and within the first picosecond ultrafast scattering towards the lowest conduction band was observed. Moreover, long lifetimes of up to 35 ps in the conduction band bottom at the surface were obtained and no sign of trapping in defect states was found.
Who reads Photoexcited Charge Carrier Dynamics in <Mml:math Xmlns:mml="?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Grad, Lisa ;von Rohr, Fabian ;Zhao, Jianzhou ;Hengsberger, Matthias ;Osterwalder, Jürg
- Publisher
- American Physical Society (APS)
- Published
- 2020
- Language
- EN
- Field
- Materials Science (Physical Sciences)