Hot electron generation via internal surface photo-effect in structures with quantum well

Fedor A. Shuklin*, Igor V. Smetanin, Igor E. Protsenko, Jacob B. Khurgin, Alexander V. Uskov

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

It was recently demonstrated in the experiments [1,2] that the internal photoemission efficiency can reach several tens of percents because of "coherent" or, "surface" photoemission. In present work we provide theoretical description of this effect assuming the surface photoemissionin the structureconsisting ofthe Schottky-barrier metal-semiconductor interface with the Quantum Well (QW) inside. We take into account the difference of dielectric permittivities for the metal and the semiconductor which strongly affects the photoemission efficiency. We show that QW inside the Schottky-barrier can lead to (a) lowering the threshold energy of the photoemission due to resonance tunneling of electrons through the intermediate quasi-level of energy in QW; (b) the photoemission efficiency can be increased by several orders of magnitude.

Original languageEnglish
Title of host publicationMetamaterials XII
EditorsKevin F. MacDonald, Isabelle Staude, Anatoly V. Zayats
PublisherSPIE - International Society for Optical Engineering
Publication date1. Jan 2020
Article number113441X
ISBN (Electronic)9781510634602
DOIs
Publication statusPublished - 1. Jan 2020
EventMetamaterials XII 2020 - None, France
Duration: 6. Apr 202010. Apr 2020

Conference

ConferenceMetamaterials XII 2020
Country/TerritoryFrance
CityNone
Period06/04/202010/04/2020
SponsorCity of Strasbourg, CNRS - The National Center for Scientific Research, et al., Eurometropole, Region Grand Est, The Society of Photo-Optical Instrumentation Engineers (SPIE)
SeriesProceedings of SPIE, the International Society for Optical Engineering
Volume11344
ISSN0277-786X

Keywords

  • Hot electron generation
  • Metal-semiconductor interface
  • Photo-effect
  • Schottky barrier
  • Water splitting

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