A GaAs nanowire array solar cell with 15.3% efficiency at 1 sun

Ingvar Aberg; Giuliano Vescovi; Damir Asoli; Umear Naseem; James P. Gilboy; Christian Sundvall; Andreas Dahlgren; K. Erik Svensson; Nicklas Anttu; Mikael T. Bjork; Lars Samuelson

doi:10.1109/JPHOTOV.2015.2484967

A GaAs nanowire array solar cell with 15.3% efficiency at 1 sun

Ingvar Aberg^*, Giuliano Vescovi, Damir Asoli, Umear Naseem, James P. Gilboy, Christian Sundvall, Andreas Dahlgren, K. Erik Svensson, Nicklas Anttu, Mikael T. Bjork, Lars Samuelson

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

257 Citations (Scopus)

Abstract

A GaAs nanowire array solar cell with an independently verified solar energy conversion efficiency of 15.3% and open-circuit voltage of 0.906 V under AM1.5g solar illumination at 1-sun intensity has been fabricated. This is the highest published efficiency for nanowire array solar cells and is twice the prior record for GaAs nanowire array solar cells. The solar cell has been fabricated by substrate-based epitaxy but is structurally compatible with substrate-less aerotaxy fabrication, providing a path to high-volume manufacturing. The short-circuit current of 21.3 mA/cm² was generated with axial p-n junction GaAs cores covering 13% of the surface area, which is a volume of GaAs equivalent to a 370-nm-thick planar layer.

Original language	English
Article number	7298402
Pages (from-to)	185-190
Number of pages	6
Journal	IEEE Journal of Photovoltaics
Volume	6
Issue number	1
DOIs	https://doi.org/10.1109/JPHOTOV.2015.2484967
Publication status	Published - Jan 2016
MoE publication type	A1 Journal article-refereed

Keywords

Diodes
gallium arsenide
nanowires
photovoltaic cells
surfaces

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10.1109/JPHOTOV.2015.2484967

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title = "A GaAs nanowire array solar cell with 15.3% efficiency at 1 sun",

abstract = "A GaAs nanowire array solar cell with an independently verified solar energy conversion efficiency of 15.3% and open-circuit voltage of 0.906 V under AM1.5g solar illumination at 1-sun intensity has been fabricated. This is the highest published efficiency for nanowire array solar cells and is twice the prior record for GaAs nanowire array solar cells. The solar cell has been fabricated by substrate-based epitaxy but is structurally compatible with substrate-less aerotaxy fabrication, providing a path to high-volume manufacturing. The short-circuit current of 21.3 mA/cm2 was generated with axial p-n junction GaAs cores covering 13% of the surface area, which is a volume of GaAs equivalent to a 370-nm-thick planar layer.",

keywords = "Diodes, gallium arsenide, nanowires, photovoltaic cells, surfaces",

author = "Ingvar Aberg and Giuliano Vescovi and Damir Asoli and Umear Naseem and Gilboy, {James P.} and Christian Sundvall and Andreas Dahlgren and Svensson, {K. Erik} and Nicklas Anttu and Bjork, {Mikael T.} and Lars Samuelson",

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year = "2016",

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doi = "10.1109/JPHOTOV.2015.2484967",

language = "English",

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AU - Aberg, Ingvar

AU - Vescovi, Giuliano

AU - Asoli, Damir

AU - Naseem, Umear

AU - Gilboy, James P.

AU - Sundvall, Christian

AU - Dahlgren, Andreas

AU - Svensson, K. Erik

AU - Anttu, Nicklas

AU - Bjork, Mikael T.

AU - Samuelson, Lars

PY - 2016/1

Y1 - 2016/1

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AB - A GaAs nanowire array solar cell with an independently verified solar energy conversion efficiency of 15.3% and open-circuit voltage of 0.906 V under AM1.5g solar illumination at 1-sun intensity has been fabricated. This is the highest published efficiency for nanowire array solar cells and is twice the prior record for GaAs nanowire array solar cells. The solar cell has been fabricated by substrate-based epitaxy but is structurally compatible with substrate-less aerotaxy fabrication, providing a path to high-volume manufacturing. The short-circuit current of 21.3 mA/cm2 was generated with axial p-n junction GaAs cores covering 13% of the surface area, which is a volume of GaAs equivalent to a 370-nm-thick planar layer.

KW - Diodes

KW - gallium arsenide

KW - nanowires

KW - photovoltaic cells

KW - surfaces

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A GaAs nanowire array solar cell with 15.3% efficiency at 1 sun

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Keywords

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