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Title: Photon upconversion with hot carriers in plasmonic systems

We propose a scheme of photon upconversion based on harnessing the energy of plasmonic hot carriers. Low-energy photons excite hot electrons and hot holes in a plasmonic nanoparticle, which are then injected into an adjacent semiconductor quantum well where they radiatively recombine to emit a photon of higher energy. We theoretically study the proposed upconversion scheme using Fermi-liquid theory and determine the internal quantum efficiency of upconversion to be as high as 25% in 5 nm silver nanocubes. This upconversion scheme is linear in its operation, does not require coherent illumination, offers spectral tunability, and is more efficient than conventional upconverters.
Authors:
;  [1]
  1. Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, California 94305 (United States)
Publication Date:
OSTI Identifier:
22482186
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 13; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CARRIERS; EMISSION; FERMI GAS; ILLUMINANCE; PHOTONS; QUANTUM EFFICIENCY; QUANTUM WELLS; SEMICONDUCTOR MATERIALS; SILVER