Sub‐Picosecond Carrier Dynamics Explored using Automated High‐Throughput Studies of Doping Inhomogeneity within a Bayesian Framework

Abstract: Bottom–up production of semiconductor nanomaterials is often accompanied by inhomogeneity resulting in a spread in electronic properties which may be influenced by the nanoparticle geometry, crystal quality, stoichiometry, or doping. Using photoluminescence spectroscopy of a population of more than 11 000 individual zinc‐doped gallium arsenide nanowires, inhomogeneity is revealed in, and correlation between doping and nanowire diameter by use of a Bayesian statistical approach. Recombination of hot‐carriers is shown to be responsible for the photoluminescence lineshape; by exploiting lifetime variation across the population, hot‐carrier dynamics is revealed at the sub‐picosecond timescale showing interband electronic dynamics. High‐throughput spectroscopy together with a Bayesian approach are shown to provide unique insight in an inhomogeneous nanomaterial population, and can reveal electronic dynamics otherwise requiring complex pump‐probe experiments in highly non‐equilibrium conditions.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Sub‐Picosecond Carrier Dynamics Explored using Automated High‐Throughput Studies of Doping Inhomogeneity within a Bayesian Framework ; day:24 ; month:04 ; year:2023 ; extent:10 ; Small ; (24.04.2023) (gesamt 10)

Contributors, Places and Time

• Creator: Al‐Abri, Ruqaiya ; Al Amairi, Nawal ; Church, Stephen ; Byrne, Conor ; Sivakumar, Sudhakar ; Walton, Alex ; Magnusson, Martin H. ; Parkinson, Patrick

Further information

• DOI: 10.1002/smll.202300053
• URN: urn:nbn:de:101:1-2023042515414857271775
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:47 AM CEST