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Spectral engineering of ultrathin germanium solar cells for combined photovoltaic and photosynthesis

Osterthun, Norbert and Neugebohrn, Nils and Gehrke, Kai and Vehse, Martin and Agert, Carsten (2021) Spectral engineering of ultrathin germanium solar cells for combined photovoltaic and photosynthesis. Optics Express, pp. 938-950. Optical Society of America. doi: 10.1364/OE.412101. ISSN 1094-4087.

Full text not available from this repository.

Official URL: https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-2-938&id=445761


In densely populated areas, ground mounted photovoltaic power plants compete with agriculture for cultivable land. Agrivoltaic systems allow the combination of these two forms of land use by deliberately designed light sharing. In this contribution, we present a spectrally selective solar cell, for use in agrivoltaic systems, greenhouses, and photo-bioreactors. Our concept benefits from a solar cell with a transmission spectrum which can be easily tuned for the specific absorption requirements of algae and plants. This is achieved by a Fabry-Perot-type multilayer resonator as a back reflector, which determines the transmission and absorption spectrum of the solar cell. We demonstrate the extent of how this transmission spectrum can be engineered by varying the layer thicknesses of the reflector and we show how the reflecting metal layers in the back reflector influence the transmission and photocurrent generation of the spectrally selective solar cell. Finally, we analyze the optical loss mechanisms of the solar cell layer stack to address further optimization potential. Our work offers a spectrally selective solar cell which can be easily adjusted for the requirements of combining photovoltaic and photosynthesis.

Item URL in elib:https://elib.dlr.de/137663/
Document Type:Article
Title:Spectral engineering of ultrathin germanium solar cells for combined photovoltaic and photosynthesis
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Osterthun, NorbertUNSPECIFIEDhttps://orcid.org/0000-0003-2668-6605
Gehrke, KaiUNSPECIFIEDhttps://orcid.org/0000-0002-0591-8289
Vehse, MartinUNSPECIFIEDhttps://orcid.org/0000-0003-0578-6121
Agert, CarstenUNSPECIFIEDhttps://orcid.org/0000-0003-4733-5257
Date:5 January 2021
Journal or Publication Title:Optics Express
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 938-950
Publisher:Optical Society of America
Keywords:Spektral selektive Solarzelle, Fabry-Perot-Resonator, Kavität verstärkte Absorption, Ultra dünner Absorber, Germanium
HGF - Research field:Energy
HGF - Program:Energy System Design
HGF - Program Themes:Digitalization and System Technology
DLR - Research area:Energy
DLR - Program:E SY - Energy System Technology and Analysis
DLR - Research theme (Project):E - Energy System Technology
Location: Oldenburg
Institutes and Institutions:Institute of Networked Energy Systems > Urban and Residential Technologies
Deposited By: Osterthun, Norbert
Deposited On:03 Dec 2020 11:38
Last Modified:24 May 2022 23:46

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