We show that scanning electron microscopy imaging can indicate hot-electron formation in aluminum plasmonic nanostructures composed of five triangular cavities. A very strong secondary electron emission was observed, up to 150 nm from the plasmonic structure. The secondary electron emission depends on the acceleration voltage, the distance between the plasmonic cavities, the metal type, and the roughness of the surface. Furthermore, the formation of hot electrons was used to increase the efficiency of an optoelectronic device.
|Number of pages||8|
|Journal||Journal of Physical Chemistry C|
|State||Published - 19 Dec 2019|
Bibliographical noteFunding Information:
We thank Dr. David Gachet for the fruitful discussions and important insights (former engineer at Attolight company, Switzerland), Dr. Adam Ginsburg for his help with the TiO 2 pyrolysis procedure, and Dr. David Keller from the BIU chemistry department for assistance with the PV measurements. E.S. thanks the Israeli Ministry of Science and Technology (MOST) for their financial support. This work is supported financially by ISF-NSFC grant no. 2525/17.
Copyright © 2019 American Chemical Society.