Wafer-scale growth of silicon microwire arrays for photovoltaics and solar fuel generation

Adele C. Tamboli, Christopher T. Chen, Emily L. Warren, Daniel B. Turner-Evans, Michael D. Kelzenberg, Nathan S Lewis, Harry A. Atwater

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Silicon microwire arrays have recently demonstrated their potential for low-cost, high-efficiency photovoltaics and photoelectrochemical fuel generation. A remaining challenge to making this technology commercially viable is scaling up of microwire-array growth. We discuss here a technique for vapor-liquid-solid growth of microwire arrays on the scale of six-inch wafers using a cold-wall radio-frequency heated chemical vapor deposition furnace, enabling fairly uniform growth over large areas with rapid cycle time and improved run-to-run reproducibility. We have also developed a technique to embed these large-area wire arrays in polymer and to peel them intact from the growth substrate, which could enable lightweight, flexible solar cells with efficiencies as high as multicrystalline Si solar cells. We characterize these large-area microwire arrays using scanning electron microscopy and confocal microscopy to assess their structure and fidelity, and we test their energy-conversion properties using a methyl viologen (MV 2+/+) liquid junction contact in a photoelectrochemical cell. Initial photoelectrochemical conversion efficiencies suggest that the material quality of these microwire arrays is similar to smaller (∼1 cm 2) wire arrays that we have grown in the past, indicating that this technique is a viable way to scale up microwire-array devices.

Original languageEnglish
Article number6187686
Pages (from-to)294-297
Number of pages4
JournalIEEE Journal of Photovoltaics
Volume2
Issue number3
DOIs
Publication statusPublished - 2012

Fingerprint

Silicon
wafers
silicon
Solar cells
Wire
Photoelectrochemical cells
Paraquat
Confocal microscopy
Liquids
Energy conversion
Contacts (fluid mechanics)
Conversion efficiency
Chemical vapor deposition
Polymers
Furnaces
solar cells
Vapors
wire
cold walls
Scanning electron microscopy

Keywords

  • Microwire
  • nanowire
  • photoelectrochemical
  • photovoltaic

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Tamboli, A. C., Chen, C. T., Warren, E. L., Turner-Evans, D. B., Kelzenberg, M. D., Lewis, N. S., & Atwater, H. A. (2012). Wafer-scale growth of silicon microwire arrays for photovoltaics and solar fuel generation. IEEE Journal of Photovoltaics, 2(3), 294-297. [6187686]. https://doi.org/10.1109/JPHOTOV.2012.2191941

Wafer-scale growth of silicon microwire arrays for photovoltaics and solar fuel generation. / Tamboli, Adele C.; Chen, Christopher T.; Warren, Emily L.; Turner-Evans, Daniel B.; Kelzenberg, Michael D.; Lewis, Nathan S; Atwater, Harry A.

In: IEEE Journal of Photovoltaics, Vol. 2, No. 3, 6187686, 2012, p. 294-297.

Research output: Contribution to journalArticle

Tamboli, AC, Chen, CT, Warren, EL, Turner-Evans, DB, Kelzenberg, MD, Lewis, NS & Atwater, HA 2012, 'Wafer-scale growth of silicon microwire arrays for photovoltaics and solar fuel generation', IEEE Journal of Photovoltaics, vol. 2, no. 3, 6187686, pp. 294-297. https://doi.org/10.1109/JPHOTOV.2012.2191941
Tamboli, Adele C. ; Chen, Christopher T. ; Warren, Emily L. ; Turner-Evans, Daniel B. ; Kelzenberg, Michael D. ; Lewis, Nathan S ; Atwater, Harry A. / Wafer-scale growth of silicon microwire arrays for photovoltaics and solar fuel generation. In: IEEE Journal of Photovoltaics. 2012 ; Vol. 2, No. 3. pp. 294-297.
@article{da163b65e82540bfba90fa05dd5fe185,
title = "Wafer-scale growth of silicon microwire arrays for photovoltaics and solar fuel generation",
abstract = "Silicon microwire arrays have recently demonstrated their potential for low-cost, high-efficiency photovoltaics and photoelectrochemical fuel generation. A remaining challenge to making this technology commercially viable is scaling up of microwire-array growth. We discuss here a technique for vapor-liquid-solid growth of microwire arrays on the scale of six-inch wafers using a cold-wall radio-frequency heated chemical vapor deposition furnace, enabling fairly uniform growth over large areas with rapid cycle time and improved run-to-run reproducibility. We have also developed a technique to embed these large-area wire arrays in polymer and to peel them intact from the growth substrate, which could enable lightweight, flexible solar cells with efficiencies as high as multicrystalline Si solar cells. We characterize these large-area microwire arrays using scanning electron microscopy and confocal microscopy to assess their structure and fidelity, and we test their energy-conversion properties using a methyl viologen (MV 2+/+) liquid junction contact in a photoelectrochemical cell. Initial photoelectrochemical conversion efficiencies suggest that the material quality of these microwire arrays is similar to smaller (∼1 cm 2) wire arrays that we have grown in the past, indicating that this technique is a viable way to scale up microwire-array devices.",
keywords = "Microwire, nanowire, photoelectrochemical, photovoltaic",
author = "Tamboli, {Adele C.} and Chen, {Christopher T.} and Warren, {Emily L.} and Turner-Evans, {Daniel B.} and Kelzenberg, {Michael D.} and Lewis, {Nathan S} and Atwater, {Harry A.}",
year = "2012",
doi = "10.1109/JPHOTOV.2012.2191941",
language = "English",
volume = "2",
pages = "294--297",
journal = "IEEE Journal of Photovoltaics",
issn = "2156-3381",
publisher = "IEEE Electron Devices Society",
number = "3",

}

TY - JOUR

T1 - Wafer-scale growth of silicon microwire arrays for photovoltaics and solar fuel generation

AU - Tamboli, Adele C.

AU - Chen, Christopher T.

AU - Warren, Emily L.

AU - Turner-Evans, Daniel B.

AU - Kelzenberg, Michael D.

AU - Lewis, Nathan S

AU - Atwater, Harry A.

PY - 2012

Y1 - 2012

N2 - Silicon microwire arrays have recently demonstrated their potential for low-cost, high-efficiency photovoltaics and photoelectrochemical fuel generation. A remaining challenge to making this technology commercially viable is scaling up of microwire-array growth. We discuss here a technique for vapor-liquid-solid growth of microwire arrays on the scale of six-inch wafers using a cold-wall radio-frequency heated chemical vapor deposition furnace, enabling fairly uniform growth over large areas with rapid cycle time and improved run-to-run reproducibility. We have also developed a technique to embed these large-area wire arrays in polymer and to peel them intact from the growth substrate, which could enable lightweight, flexible solar cells with efficiencies as high as multicrystalline Si solar cells. We characterize these large-area microwire arrays using scanning electron microscopy and confocal microscopy to assess their structure and fidelity, and we test their energy-conversion properties using a methyl viologen (MV 2+/+) liquid junction contact in a photoelectrochemical cell. Initial photoelectrochemical conversion efficiencies suggest that the material quality of these microwire arrays is similar to smaller (∼1 cm 2) wire arrays that we have grown in the past, indicating that this technique is a viable way to scale up microwire-array devices.

AB - Silicon microwire arrays have recently demonstrated their potential for low-cost, high-efficiency photovoltaics and photoelectrochemical fuel generation. A remaining challenge to making this technology commercially viable is scaling up of microwire-array growth. We discuss here a technique for vapor-liquid-solid growth of microwire arrays on the scale of six-inch wafers using a cold-wall radio-frequency heated chemical vapor deposition furnace, enabling fairly uniform growth over large areas with rapid cycle time and improved run-to-run reproducibility. We have also developed a technique to embed these large-area wire arrays in polymer and to peel them intact from the growth substrate, which could enable lightweight, flexible solar cells with efficiencies as high as multicrystalline Si solar cells. We characterize these large-area microwire arrays using scanning electron microscopy and confocal microscopy to assess their structure and fidelity, and we test their energy-conversion properties using a methyl viologen (MV 2+/+) liquid junction contact in a photoelectrochemical cell. Initial photoelectrochemical conversion efficiencies suggest that the material quality of these microwire arrays is similar to smaller (∼1 cm 2) wire arrays that we have grown in the past, indicating that this technique is a viable way to scale up microwire-array devices.

KW - Microwire

KW - nanowire

KW - photoelectrochemical

KW - photovoltaic

UR - http://www.scopus.com/inward/record.url?scp=84865171136&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865171136&partnerID=8YFLogxK

U2 - 10.1109/JPHOTOV.2012.2191941

DO - 10.1109/JPHOTOV.2012.2191941

M3 - Article

VL - 2

SP - 294

EP - 297

JO - IEEE Journal of Photovoltaics

JF - IEEE Journal of Photovoltaics

SN - 2156-3381

IS - 3

M1 - 6187686

ER -