Boosting solar cell photovoltage via nanophotonic engineering

Y. Cui, A.D. van Dam, S.A. Mann, N.J.J. Hoof, P.J. van Veldhoven, E.C. Garnett, E.P.A.M. Bakkers, J.E.M. Haverkort

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

37 Citaties (Scopus)
1 Downloads (Pure)

Uittreksel

Approaching the theoretically limiting open circuit voltage (V-oc) of solar cells is crucial to optimize their photovoltaic performance. Here, we demonstrate experimentally that nanostructured layers can achieve a fundamentally larger Fermi level splitting, and thus a larger V-oc, than planar layers. By etching tapered nanowires from planar indium phosphide (InP), we directly compare planar and nanophotonic geometries with the exact same material quality. We show that the external radiative efficiency of the nanostructured layer at 1 sun is increased by a factor 14 compared to the planar layer, leading to a 70 mV enhancement in V-oc. The higher voltage arises from both the enhanced outcoupling of photons, which promotes radiative recombination, and the lower active material volume, which reduces bulk recombination. These effects are generic and promise to enhance the efficiency of current record planar solar cells made from other materials as well.
Originele taal-2Engels
Pagina's (van-tot)6467-6471
Aantal pagina's5
TijdschriftNano Letters
Volume16
Nummer van het tijdschrift10
DOI's
StatusGepubliceerd - 1 okt 2016

Vingerafdruk

Nanophotonics
photovoltages
Solar cells
solar cells
engineering
Indium phosphide
Open circuit voltage
Fermi level
Sun
indium phosphides
Nanowires
Etching
radiative recombination
Photons
open circuit voltage
high voltages
sun
nanowires
Geometry
etching

Citeer dit

Cui, Y., van Dam, A. D., Mann, S. A., Hoof, N. J. J., van Veldhoven, P. J., Garnett, E. C., ... Haverkort, J. E. M. (2016). Boosting solar cell photovoltage via nanophotonic engineering. Nano Letters, 16(10), 6467-6471. https://doi.org/10.1021/acs.nanolett.6b02971
Cui, Y. ; van Dam, A.D. ; Mann, S.A. ; Hoof, N.J.J. ; van Veldhoven, P.J. ; Garnett, E.C. ; Bakkers, E.P.A.M. ; Haverkort, J.E.M. / Boosting solar cell photovoltage via nanophotonic engineering. In: Nano Letters. 2016 ; Vol. 16, Nr. 10. blz. 6467-6471.
@article{e3839cbcbe5647bea14e9cad0ac8042e,
title = "Boosting solar cell photovoltage via nanophotonic engineering",
abstract = "Approaching the theoretically limiting open circuit voltage (V-oc) of solar cells is crucial to optimize their photovoltaic performance. Here, we demonstrate experimentally that nanostructured layers can achieve a fundamentally larger Fermi level splitting, and thus a larger V-oc, than planar layers. By etching tapered nanowires from planar indium phosphide (InP), we directly compare planar and nanophotonic geometries with the exact same material quality. We show that the external radiative efficiency of the nanostructured layer at 1 sun is increased by a factor 14 compared to the planar layer, leading to a 70 mV enhancement in V-oc. The higher voltage arises from both the enhanced outcoupling of photons, which promotes radiative recombination, and the lower active material volume, which reduces bulk recombination. These effects are generic and promise to enhance the efficiency of current record planar solar cells made from other materials as well.",
author = "Y. Cui and {van Dam}, A.D. and S.A. Mann and N.J.J. Hoof and {van Veldhoven}, P.J. and E.C. Garnett and E.P.A.M. Bakkers and J.E.M. Haverkort",
year = "2016",
month = "10",
day = "1",
doi = "10.1021/acs.nanolett.6b02971",
language = "English",
volume = "16",
pages = "6467--6471",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "10",

}

Cui, Y, van Dam, AD, Mann, SA, Hoof, NJJ, van Veldhoven, PJ, Garnett, EC, Bakkers, EPAM & Haverkort, JEM 2016, 'Boosting solar cell photovoltage via nanophotonic engineering', Nano Letters, vol. 16, nr. 10, blz. 6467-6471. https://doi.org/10.1021/acs.nanolett.6b02971

Boosting solar cell photovoltage via nanophotonic engineering. / Cui, Y.; van Dam, A.D.; Mann, S.A.; Hoof, N.J.J.; van Veldhoven, P.J.; Garnett, E.C.; Bakkers, E.P.A.M.; Haverkort, J.E.M.

In: Nano Letters, Vol. 16, Nr. 10, 01.10.2016, blz. 6467-6471.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Boosting solar cell photovoltage via nanophotonic engineering

AU - Cui, Y.

AU - van Dam, A.D.

AU - Mann, S.A.

AU - Hoof, N.J.J.

AU - van Veldhoven, P.J.

AU - Garnett, E.C.

AU - Bakkers, E.P.A.M.

AU - Haverkort, J.E.M.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Approaching the theoretically limiting open circuit voltage (V-oc) of solar cells is crucial to optimize their photovoltaic performance. Here, we demonstrate experimentally that nanostructured layers can achieve a fundamentally larger Fermi level splitting, and thus a larger V-oc, than planar layers. By etching tapered nanowires from planar indium phosphide (InP), we directly compare planar and nanophotonic geometries with the exact same material quality. We show that the external radiative efficiency of the nanostructured layer at 1 sun is increased by a factor 14 compared to the planar layer, leading to a 70 mV enhancement in V-oc. The higher voltage arises from both the enhanced outcoupling of photons, which promotes radiative recombination, and the lower active material volume, which reduces bulk recombination. These effects are generic and promise to enhance the efficiency of current record planar solar cells made from other materials as well.

AB - Approaching the theoretically limiting open circuit voltage (V-oc) of solar cells is crucial to optimize their photovoltaic performance. Here, we demonstrate experimentally that nanostructured layers can achieve a fundamentally larger Fermi level splitting, and thus a larger V-oc, than planar layers. By etching tapered nanowires from planar indium phosphide (InP), we directly compare planar and nanophotonic geometries with the exact same material quality. We show that the external radiative efficiency of the nanostructured layer at 1 sun is increased by a factor 14 compared to the planar layer, leading to a 70 mV enhancement in V-oc. The higher voltage arises from both the enhanced outcoupling of photons, which promotes radiative recombination, and the lower active material volume, which reduces bulk recombination. These effects are generic and promise to enhance the efficiency of current record planar solar cells made from other materials as well.

U2 - 10.1021/acs.nanolett.6b02971

DO - 10.1021/acs.nanolett.6b02971

M3 - Article

C2 - 27607337

VL - 16

SP - 6467

EP - 6471

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

IS - 10

ER -

Cui Y, van Dam AD, Mann SA, Hoof NJJ, van Veldhoven PJ, Garnett EC et al. Boosting solar cell photovoltage via nanophotonic engineering. Nano Letters. 2016 okt 1;16(10):6467-6471. https://doi.org/10.1021/acs.nanolett.6b02971