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Optical Switching of Quantum Confinement-Tunable Semi-Transparent Solar Cell Based on Ultrathin Germanium

Götz-Köhler, Maximilian and Meddeb, Hosni and Gehrke, Kai and Vehse, Martin and Agert, Carsten (2021) Optical Switching of Quantum Confinement-Tunable Semi-Transparent Solar Cell Based on Ultrathin Germanium. In: 48th IEEE Photovoltaic Specialists Conference, PVSC 2021, 0774-0777. IEEE. 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC), 20.-25. Jun. 2021, Fort Lauderdale, FL, USA. doi: 10.1109/PVSC43889.2021.9518576. ISBN 978-166541922-2. ISSN 0160-8371.

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Official URL: http://dx.doi.org/10.1109/PVSC43889.2021.9518576


In this contribution, we study the effects of optical switching on quantum confinement of a semitransparent solar cell based on an ultrathin amorphous germanium absorber placed inside a resonant nanocavity. The optical switching of the cavity is based on the transition of the back contact from metallic opaque Mg to dielectric semitransparent MgH2 after the absorption of hydrogen. Optical simulations show that the electric field confinement and local absorption inside the device depend strongly on both, the state of the switchable mirror layer and the size-dependent optoelectronic properties of the QW absorber. The quantum confinement tuning enables thickness reduction, while providing enhanced efficiency and promoted transmission in optically switchable semitransparent QW a-Ge:H technology. This work paves the way to the usage a fully switchable photovoltaic window.

Item URL in elib:https://elib.dlr.de/145008/
Document Type:Conference or Workshop Item (Speech)
Title:Optical Switching of Quantum Confinement-Tunable Semi-Transparent Solar Cell Based on Ultrathin Germanium
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Götz-Köhler, MaximilianUNSPECIFIEDhttps://orcid.org/0000-0002-6078-4359
Meddeb, HosniUNSPECIFIEDhttps://orcid.org/0000-0001-8939-7910
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:26 August 2021
Journal or Publication Title:48th IEEE Photovoltaic Specialists Conference, PVSC 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:0774-0777
Series Name:2021 IEEE 48th Photovoltaic Specialists Conference (PVSC)
Keywords:Photovoltaic systems, Absorption, Optical switches, Photovoltaic cells, Hydrogen, Potential well, Germanium, switchable magnesium mirror, quantum confinement, ultrathin germanium nano-absorber, absorbing resonant nanocavity, semitransparent solar cell
Event Title:2021 IEEE 48th Photovoltaic Specialists Conference (PVSC)
Event Location:Fort Lauderdale, FL, USA
Event Type:international Conference
Event Dates:20.-25. Jun. 2021
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: Götz, Maximilian
Deposited On:01 Nov 2021 10:02
Last Modified:01 Nov 2021 10:02

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