Journal article
Emergent properties from CuPd alloy films under near-infrared excitation
The Journal of chemical physics, v 157(17), pp 174702-174702
07 Nov 2022
PMID: 36347709
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Noble-transition metal alloys offer emergent optical and electronic properties for near-infrared (NIR) optoelectronic devices. We investigate the optical and electronic properties of CuxPd1-x alloy thin films and their ultrafast electron dynamics under NIR excitation. Ultraviolet photoelectron spectroscopy measurements supported by density functional theory calculations show strong d-band hybridization between the Cu 3d and Pd 4d bands. These hybridization effects result in emergent optical properties, most apparent in the dilute Pd case. Time-resolved terahertz spectroscopy with NIR (e.g., 1550 nm) excitation displays composition-tunable electron dynamics. We posit that the negative peak in the normalized increment of transmissivity (delta T/T) below 2 ps from dilute Pd alloys is due to non-thermalized hot-carrier generation. On the other hand, Pd-rich alloys exhibit an increase in delta T/T due to thermalization effects upon ultrafast NIR photoexcitation. CuxPd1-x alloys in the dilute Pd regime may be a promising material for future ultrafast NIR optoelectronic devices. Published under an exclusive license by AIP Publishing.
Metrics
Details
- Title
- Emergent properties from CuPd alloy films under near-infrared excitation
- Creators
- Gregory A. Manoukian - Drexel UniversityOrhan Kizilkaya - Louisiana State UniversitySergi Lendinez - University of DelawareLuis D. B. Manuel - Louisiana State UniversityTiago. R. R. Leite - Louisiana State UniversityKarunya. S. S. Shirali - Louisiana State UniversityWilliam. A. A. Shelton - Louisiana State UniversityPhillip. T. T. Sprunger - Louisiana State UniversityJason. B. B. Baxter - Drexel UniversityKevin. M. M. McPeak - Louisiana State University
- Publication Details
- The Journal of chemical physics, v 157(17), pp 174702-174702
- Publisher
- AIP Publishing
- Number of pages
- 8
- Grant note
- DMR-2114304; DMR-2114312 / National Science Foundation; National Science Foundation (NSF) W911NF2110129 / Army Research Office
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000884800300019
- Scopus ID
- 2-s2.0-85141454469
- Other Identifier
- 991020200889804721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Physics, Atomic, Molecular & Chemical