Impact of substrate thickness on the surface passivation in high performance n-type solar cells

Andre Augusto; Pradeep Balaji; Joseph Karas; Stuart Bowden

doi:10.1109/PVSC.2018.8548174

Impact of substrate thickness on the surface passivation in high performance n-type solar cells

Andre Augusto, Pradeep Balaji, Joseph Karas, Stuart Bowden

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Scopus citations

Abstract

Recently, silicon solar cells surpassed 26% efficiency. This was a result of remarkable low surface saturation current density and high short-circuit current provided by the SHJ-IBC architecture. In this paper we study the contribution of the different recombination mechanisms to shape the voltage at open-circuit and maximum power for different solar cell thicknesses. We demonstrate thinner cells are required to increase further the efficiency toward the intrinsic limit, as voltage increases and bulk lifetime dependence decreases. Open-circuit voltages over 760 mV were experimental confirmed on 50 μm-thick SHJ structures, leading to bandgap-voltage offsets of 0.349V.

Original language	English (US)
Title of host publication	2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	2792-2794
Number of pages	3
ISBN (Electronic)	9781538685297
DOIs	https://doi.org/10.1109/PVSC.2018.8548174
State	Published - Nov 26 2018
Event	7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States Duration: Jun 10 2018 → Jun 15 2018

Publication series

Name	2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC

Other

Other	7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Country/Territory	United States
City	Waikoloa Village
Period	6/10/18 → 6/15/18

Keywords

amorphous materials
heterojunction
lifetime
photovoltaic
silicon
solar cells
surface passivation

ASJC Scopus subject areas

Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

Access to Document

10.1109/PVSC.2018.8548174

Cite this

Augusto, A., Balaji, P., Karas, J., & Bowden, S. (2018). Impact of substrate thickness on the surface passivation in high performance n-type solar cells. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC (pp. 2792-2794). Article 8548174 (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2018.8548174

Impact of substrate thickness on the surface passivation in high performance n-type solar cells. / Augusto, Andre; Balaji, Pradeep; Karas, Joseph et al.
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc., 2018. p. 2792-2794 8548174 (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Augusto, A, Balaji, P, Karas, J & Bowden, S 2018, Impact of substrate thickness on the surface passivation in high performance n-type solar cells. in 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC., 8548174, 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC, Institute of Electrical and Electronics Engineers Inc., pp. 2792-2794, 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018, Waikoloa Village, United States, 6/10/18. https://doi.org/10.1109/PVSC.2018.8548174

Augusto A, Balaji P, Karas J, Bowden S. Impact of substrate thickness on the surface passivation in high performance n-type solar cells. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc. 2018. p. 2792-2794. 8548174. (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC). doi: 10.1109/PVSC.2018.8548174

Augusto, Andre ; Balaji, Pradeep ; Karas, Joseph et al. / Impact of substrate thickness on the surface passivation in high performance n-type solar cells. 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 2792-2794 (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC).

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abstract = "Recently, silicon solar cells surpassed 26% efficiency. This was a result of remarkable low surface saturation current density and high short-circuit current provided by the SHJ-IBC architecture. In this paper we study the contribution of the different recombination mechanisms to shape the voltage at open-circuit and maximum power for different solar cell thicknesses. We demonstrate thinner cells are required to increase further the efficiency toward the intrinsic limit, as voltage increases and bulk lifetime dependence decreases. Open-circuit voltages over 760 mV were experimental confirmed on 50 μm-thick SHJ structures, leading to bandgap-voltage offsets of 0.349V.",

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AB - Recently, silicon solar cells surpassed 26% efficiency. This was a result of remarkable low surface saturation current density and high short-circuit current provided by the SHJ-IBC architecture. In this paper we study the contribution of the different recombination mechanisms to shape the voltage at open-circuit and maximum power for different solar cell thicknesses. We demonstrate thinner cells are required to increase further the efficiency toward the intrinsic limit, as voltage increases and bulk lifetime dependence decreases. Open-circuit voltages over 760 mV were experimental confirmed on 50 μm-thick SHJ structures, leading to bandgap-voltage offsets of 0.349V.

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Impact of substrate thickness on the surface passivation in high performance n-type solar cells

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