Silicon Solar Cells on Glass with Power Conversion Efficiency above 13% at Thickness below 15 Micrometer

Abstract Liquid phase crystallized silicon on glass with a thickness of (10–40) μm has the potential to reduce material costs and the environmental impact of crystalline silicon solar cells. Recently, wafer quality open circuit voltages of over 650 mV and remarkable photocurrent densities of over 30...

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Autores principales:	Paul Sonntag, Natalie Preissler, Matevž Bokalič, Martina Trahms, Jan Haschke, Rutger Schlatmann, Marko Topič, Bernd Rech, Daniel Amkreutz
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/107cda4345ee4e6893bf4f2025e2d973
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spelling	oai:doaj.org-article:107cda4345ee4e6893bf4f2025e2d9732021-12-02T16:06:26ZSilicon Solar Cells on Glass with Power Conversion Efficiency above 13% at Thickness below 15 Micrometer10.1038/s41598-017-00988-x2045-2322https://doaj.org/article/107cda4345ee4e6893bf4f2025e2d9732017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00988-xhttps://doaj.org/toc/2045-2322Abstract Liquid phase crystallized silicon on glass with a thickness of (10–40) μm has the potential to reduce material costs and the environmental impact of crystalline silicon solar cells. Recently, wafer quality open circuit voltages of over 650 mV and remarkable photocurrent densities of over 30 mA/cm2 have been demonstrated on this material, however, a low fill factor was limiting the performance. In this work we present our latest cell progress on 13 μm thin poly-crystalline silicon fabricated by the liquid phase crystallization directly on glass. The contact system uses passivated back-side silicon hetero-junctions, back-side KOH texture for light-trapping and interdigitated ITO/Ag contacts. The fill factors are up to 74% and efficiencies are 13.2% under AM1.5 g for two different doping densities of 1 · 1017/cm3 and 2 · 1016/cm3. The former is limited by bulk and interface recombination, leading to a reduced saturation current density, the latter by series resistance causing a lower fill factor. Both are additionally limited by electrical shading and losses at grain boundaries and dislocations. A small 1 × 0.1 cm2 test structure circumvents limitations of the contact design reaching an efficiency of 15.9% clearly showing the potential of the technology.Paul SonntagNatalie PreisslerMatevž BokaličMartina TrahmsJan HaschkeRutger SchlatmannMarko TopičBernd RechDaniel AmkreutzNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Paul Sonntag Natalie Preissler Matevž Bokalič Martina Trahms Jan Haschke Rutger Schlatmann Marko Topič Bernd Rech Daniel Amkreutz Silicon Solar Cells on Glass with Power Conversion Efficiency above 13% at Thickness below 15 Micrometer
description	Abstract Liquid phase crystallized silicon on glass with a thickness of (10–40) μm has the potential to reduce material costs and the environmental impact of crystalline silicon solar cells. Recently, wafer quality open circuit voltages of over 650 mV and remarkable photocurrent densities of over 30 mA/cm2 have been demonstrated on this material, however, a low fill factor was limiting the performance. In this work we present our latest cell progress on 13 μm thin poly-crystalline silicon fabricated by the liquid phase crystallization directly on glass. The contact system uses passivated back-side silicon hetero-junctions, back-side KOH texture for light-trapping and interdigitated ITO/Ag contacts. The fill factors are up to 74% and efficiencies are 13.2% under AM1.5 g for two different doping densities of 1 · 1017/cm3 and 2 · 1016/cm3. The former is limited by bulk and interface recombination, leading to a reduced saturation current density, the latter by series resistance causing a lower fill factor. Both are additionally limited by electrical shading and losses at grain boundaries and dislocations. A small 1 × 0.1 cm2 test structure circumvents limitations of the contact design reaching an efficiency of 15.9% clearly showing the potential of the technology.
format	article
author	Paul Sonntag Natalie Preissler Matevž Bokalič Martina Trahms Jan Haschke Rutger Schlatmann Marko Topič Bernd Rech Daniel Amkreutz
author_facet	Paul Sonntag Natalie Preissler Matevž Bokalič Martina Trahms Jan Haschke Rutger Schlatmann Marko Topič Bernd Rech Daniel Amkreutz
author_sort	Paul Sonntag
title	Silicon Solar Cells on Glass with Power Conversion Efficiency above 13% at Thickness below 15 Micrometer
title_short	Silicon Solar Cells on Glass with Power Conversion Efficiency above 13% at Thickness below 15 Micrometer
title_full	Silicon Solar Cells on Glass with Power Conversion Efficiency above 13% at Thickness below 15 Micrometer
title_fullStr	Silicon Solar Cells on Glass with Power Conversion Efficiency above 13% at Thickness below 15 Micrometer
title_full_unstemmed	Silicon Solar Cells on Glass with Power Conversion Efficiency above 13% at Thickness below 15 Micrometer
title_sort	silicon solar cells on glass with power conversion efficiency above 13% at thickness below 15 micrometer
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/107cda4345ee4e6893bf4f2025e2d973
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Silicon Solar Cells on Glass with Power Conversion Efficiency above 13% at Thickness below 15 Micrometer

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