Abstract
This article reviews thermal properties of semiconductor and emergent plasmonic nanomaterials, focusing on mechanisms through which hot carriers and phonons are produced and dissipated as well as the related impacts on optoelectronic properties. Elevated equilibrium temperatures, of particular relevance for implementation of nanomaterials in devices, affect absorptive and radiative transitions as well as emission efficiency that can present reversible and irreversible changes with temperature. In noble metal or doped semiconductor/insulator nanomaterials, hot carriers and lattice heating can substantially influence localized surface plasmon resonances and yield large ultrafast changes in transmission or strongly oscillatory coherences. Transient optical and diffraction characterizations enable nonequilibrium investigations of phonon dynamics and cooling such as lattice expansion and crystal phase stability. Timescales of nanoparticle thermalization with surroundings and transport of heat within films of such materials are also discussed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 353-377 |
| Number of pages | 25 |
| Journal | Annual Review of Physical Chemistry |
| Volume | 70 |
| DOIs | |
| State | Published - Jun 14 2019 |
Funding
The authors gratefully acknowledge contributions of collaborators such as George Schatz, Dmitri Talapin, Michael Wasiewski, Lin Chen, Robert Chang, Mercouri Kanatzidis, and Xiaoyi Zhang. Particular thanks go to former graduate students Daniel Hannah, Clare Rowland, and Angela Chang. This work was performed, in part, at the Center for Nanoscale Materials, a US Department of Energy Office of Science User Facility, and supported by the US Department of Energy, Office of Science, under contract DE-AC02-06CH11357. Graduate student support from the NSF Graduate Student Fellowship Program is gratefully acknowledged. We acknowledge support from the Ultrafast Initiative of the US Department of Energy, Office of Science, Office of Basic Energy Sciences, through Argonne National Laboratory under contract DE-AC02-06CH11357.
Keywords
- Optical probe
- Phonon dynamics
- Photoluminescence
- Plasmon
- Semiconductor nanocrystal
- Thermal excitation
ASJC Scopus subject areas
- General Medicine