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Proceedings Paper

Limiting efficiencies of solar energy conversion and photo-detection via internal emission of hot electrons and hot holes in gold
Author(s): Svetlana V. Boriskina; Jiawei Zhou; Wei-Chun Hsu; Bolin Liao; Gang Chen
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Paper Abstract

We evaluate the limiting efficiency of full and partial solar spectrum harvesting via the process of internal photoemission in Au-semiconductor Schottky junctions. Our results based on the ab initio calculations of the electron density of states (e-DOS) reveal that the limiting efficiency of the full-spectrum Au converter based on hot electron injection is below 4%. This value is even lower than previously established limit based on the parabolic approximation of the Au electron energy bands. However, we predict limiting efficiency exceeding 10% for the hot holes collection through the Schottky junction between Au and p-type semiconductor. Furthermore, we demonstrate that such converters have more potential if used as a part of the hybrid system for harvesting high- and low-energy photons of the solar spectrum.

Paper Details

Date Published: 1 September 2015
PDF: 7 pages
Proc. SPIE 9608, Infrared Remote Sensing and Instrumentation XXIII, 960816 (1 September 2015); doi: 10.1117/12.2189678
Show Author Affiliations
Svetlana V. Boriskina, Massachusetts Institute of Technology (United States)
Jiawei Zhou, Massachusetts Institute of Technology (United States)
Wei-Chun Hsu, Massachusetts Institute of Technology (United States)
Bolin Liao, Massachusetts Institute of Technology (United States)
Gang Chen, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 9608:
Infrared Remote Sensing and Instrumentation XXIII
Marija Strojnik Scholl; Gonzalo Páez, Editor(s)

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