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  4. Comparison of the ultrafast hot electron dynamics of titanium nitride and gold for plasmonic applications
 
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Comparison of the ultrafast hot electron dynamics of titanium nitride and gold for plasmonic applications
File(s)
1034604.pdf (930.39 KB)
Published version
Doiron Brock Manuscript_V5_RFO_BD.pdf (504.53 KB)
Accepted version
Author(s)
Doiron, Brock
Li, Yi
Mihai, Andrei P
Cohen, Lesley F
Pretrov, Peter K
more
Type
Conference Paper
Abstract
With similar optical properties to gold and high thermal stability, titanium nitride continues to prove itself as a promising plasmonic material for high-temperature applications in the visible and near-infrared. In this work, we use transient pump probe differential reflection measurements to compare the electron energy decay channels in titanium nitride and gold thin films. Using an extended two temperature model to incorporate the photoexcited electrons, it is possible to separate the electron-electron and electron-phonon scattering contributions immediately following the arrival of the pump pulse. This model allows for incredibly accurate determination of the internal electronic properties using only optical measurements. As the electronic properties are key in hot electron applications, we show that titanium nitide has substantially longer electron thermalization and electron-phonon scattering times. With this, we were also able to resolve electron thermal conduction in the film using purely optical measurements.
Editor(s)
Tsai, DP
Tanaka, T
Date Issued
2017-08-25
Date Acceptance
2017-08-01
Citation
PLASMONICS: DESIGN, MATERIALS, FABRICATION, CHARACTERIZATION, AND APPLICATIONS XV, 2017, 10346
URI
http://hdl.handle.net/10044/1/56538
DOI
https://www.dx.doi.org/10.1117/12.2273941
ISSN
0277-786X
Publisher
SPIE-INT SOC OPTICAL ENGINEERING
Journal / Book Title
PLASMONICS: DESIGN, MATERIALS, FABRICATION, CHARACTERIZATION, AND APPLICATIONS XV
Volume
10346
Copyright Statement
© 2017 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (E
Grant Number
EP/G060940/1
EP/M013812/1
Source
SPIE Optics + Photonics Conference on Plasmonics - Design, Materials, Fabrication, Characterization, and Applications XV
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Materials Science, Multidisciplinary
Optics
Chemistry
Materials Science
Titanium nitride
plasmonics
electron dynamics
hot electrons
THERMALIZATION
Publication Status
Published
Start Date
2017-08-06
Finish Date
2017-08-10
Coverage Spatial
San Diego, CA
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