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Title: Solar heating of GaAs nanowire solar cells

Abstract

We use a coupled thermal-optical approach to model the operating temperature rise in GaAs nanowire solar cells. Our findings show that despite more highly concentrated light absorption and lower thermal conductivity, the overall temperature rise in a nanowire structure is no higher than in a planar structure. Moreover, coating the nanowires with a transparent polymer can increase the radiative cooling power by 2.2 times, lowering the operating temperature by nearly 7 K.

Authors:
 [1];  [1]
  1. Univ. of Southern California, Los Angeles, CA (United States). Ming Hsieh Department of Electrical Engineering and Center for Energy Nanoscience
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Energy Nanoscience (CEN); Univ. of Southern California, Los Angeles, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1369903
Alternate Identifier(s):
OSTI ID: 1240847
Grant/Contract Number:  
SC0001013
Resource Type:
Accepted Manuscript
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 23; Journal Issue: 24; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
nanostructures; solar energy; thermal emission; 14 SOLAR ENERGY; 77 NANOSCIENCE AND NANOTECHNOLOGY; subwavelength structures

Citation Formats

Wu, Shao-Hua, and Povinelli, Michelle L. Solar heating of GaAs nanowire solar cells. United States: N. p., 2015. Web. doi:10.1364/OE.23.0A1363.
Wu, Shao-Hua, & Povinelli, Michelle L. Solar heating of GaAs nanowire solar cells. United States. doi:10.1364/OE.23.0A1363.
Wu, Shao-Hua, and Povinelli, Michelle L. Fri . "Solar heating of GaAs nanowire solar cells". United States. doi:10.1364/OE.23.0A1363. https://www.osti.gov/servlets/purl/1369903.
@article{osti_1369903,
title = {Solar heating of GaAs nanowire solar cells},
author = {Wu, Shao-Hua and Povinelli, Michelle L.},
abstractNote = {We use a coupled thermal-optical approach to model the operating temperature rise in GaAs nanowire solar cells. Our findings show that despite more highly concentrated light absorption and lower thermal conductivity, the overall temperature rise in a nanowire structure is no higher than in a planar structure. Moreover, coating the nanowires with a transparent polymer can increase the radiative cooling power by 2.2 times, lowering the operating temperature by nearly 7 K.},
doi = {10.1364/OE.23.0A1363},
journal = {Optics Express},
number = 24,
volume = 23,
place = {United States},
year = {2015},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 6 works
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Figures / Tables:

Fig. 1 Fig. 1: Schematic illustrations of the structures of interest. (a) Square array of GaAs nanowires, embedded in optional BCB. The inset is the magnified top view of one unit cell; a is the lattice constant for the nanowire array, and d is the nanowire diameter. Note that the layer thicknessesmore » are not drawn to scale. (b) Planar GaAs structure. (c) Boundary conditions used to solve the 3D heat diffusion equation.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.