skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Solar heating of GaAs nanowire solar cells

Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Energy Nanoscience (CEN)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Optics Express; Journal Volume: 23; Journal Issue: 24; Related Information: CEN partners with University of Southern California (lead); University of Illinois, Urbana-Champaign; University of Michigan; University of Virginia
Country of Publication:
United States

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. 2015. "Solar heating of GaAs nanowire solar cells". United States. doi:10.1364/oe.23.0a1363.
title = {Solar heating of GaAs nanowire solar cells},
author = {Wu, Shao-Hua and Povinelli, Michelle L.},
abstractNote = {},
doi = {10.1364/oe.23.0a1363},
journal = {Optics Express},
number = 24,
volume = 23,
place = {United States},
year = 2015,
month = 1
  • 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.
  • We present an all-oxide solar cell fabricated from vertically oriented zinc oxide nanowires and cuprous oxide nanoparticles. Our solar cell consists of vertically oriented n-type zinc oxide nanowires, surrounded by a film constructed from p-type cuprous oxide nanoparticles. Our solution-based synthesis of inexpensive and environmentally benign oxide materials in a solar cell would allow for the facile production of large-scale photovoltaic devices. We found that the solar cell performance is enhanced with the addition of an intermediate oxide insulating layer between the nanowires and the nanoparticles. This observation of the important dependence of the shunt resistance on the photovoltaic performancemore » is widely applicable to any nanowire solar cell constructed with the nanowire array in direct contact with one electrode.« less
  • We demonstrate the basic operation of an organic/inorganic hybrid single nanowire solar cell. End-functionalized oligo- and polythiophenes were grafted onto ZnO nanowires to produce p-n heterojunction nanowires. The hybrid nanostructures were characterized via absorption and electron microscopy to determine the optoelectronic properties and to probe the morphology at the organic/inorganic interface. Individual nanowire solar cell devices exhibited well-resolved characteristics with efficiencies as high as 0.036percent, Jsc = 0.32 mA/cm2, Voc = 0.4 V, and a FF = 0.28 under AM 1.5 illumination with 100 mW/cm2 light intensity. These individual test structures will enable detailed analysis to be carried out inmore » areas that have been difficult to study in bulk heterojunction devices.« less