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Nat Nanotechnol. 2015 Jan;10(1):25-34. doi: 10.1038/nnano.2014.311.

Plasmon-induced hot carrier science and technology.

Author information

1
1] Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA [2] Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
2
Laboratory for Nanophotonics, Department of Electrical and Computer Engineering, Department of Physics and Astronomy, and Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77005, USA.

Abstract

The discovery of the photoelectric effect by Heinrich Hertz in 1887 set the foundation for over 125 years of hot carrier science and technology. In the early 1900s it played a critical role in the development of quantum mechanics, but even today the unique properties of these energetic, hot carriers offer new and exciting opportunities for fundamental research and applications. Measurement of the kinetic energy and momentum of photoejected hot electrons can provide valuable information on the electronic structure of materials. The heat generated by hot carriers can be harvested to drive a wide range of physical and chemical processes. Their kinetic energy can be used to harvest solar energy or create sensitive photodetectors and spectrometers. Photoejected charges can also be used to electrically dope two-dimensional materials. Plasmon excitations in metallic nanostructures can be engineered to enhance and provide valuable control over the emission of hot carriers. This Review discusses recent advances in the understanding and application of plasmon-induced hot carrier generation and highlights some of the exciting new directions for the field.

PMID:
25559968
DOI:
10.1038/nnano.2014.311

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