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Ultrathin Multiple Quantum Wells Solar Cell Based on Silicon/Germanium Nanostructures

Meddeb, Hosni and Götz-Köhler, Maximilian and Osterthun, Norbert and Sergeev, Oleg and Gehrke, Kai and Vehse, Martin and Agert, Carsten (2021) Ultrathin Multiple Quantum Wells Solar Cell Based on Silicon/Germanium Nanostructures. In: 48th IEEE Photovoltaic Specialists Conference, PVSC 2021, 0975-0978. IEEE Xplore. IEEE 48th Photovoltaic Specialists Conference (PVSC) 2021, 20-25 June 2021, Fort Lauderdale, USA. doi: 10.1109/PVSC43889.2021.9519023. ISBN 978-166541922-2. ISSN 0160-8371.

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Official URL: https://ieeexplore.ieee.org/document/9519023


In this work, we report a proof-of-concept for an ultrathin multiple quantum wells (MQW) solar cell based on silicon (barrier)/germanium (QW) heterostructures integrated as a subwavelength photonic resonator below 50 nm. The multiplication of the QWs number in a periodic configuration of 6 times 2.5 nm-thick QWs allows the enhancement of photocurrent while maintaining high voltage and fill factor. Compared to a single QW (SQW) nanoabsorber of 20 nm, the implementation of MQW architecture with similar total thickness results in a significant enhancement of the photoconversion efficiency from 3 % to 5%, yielding a relative improvement of about 65%. Based on optoelectronic modeling of the optical field distribution and the electronic structure at the QW/barrier heterojunctions, the output characteristics of the subwavelength MQW solar cell device are analyzed.

Item URL in elib:https://elib.dlr.de/147670/
Document Type:Conference or Workshop Item (Speech)
Title:Ultrathin Multiple Quantum Wells Solar Cell Based on Silicon/Germanium Nanostructures
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Meddeb, HosniUNSPECIFIEDhttps://orcid.org/0000-0001-8939-7910
Götz-Köhler, MaximilianUNSPECIFIEDhttps://orcid.org/0000-0002-6078-4359
Osterthun, NorbertUNSPECIFIEDhttps://orcid.org/0000-0003-2668-6605
Sergeev, OlegUNSPECIFIEDhttps://orcid.org/0000-0002-5022-6118
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:21 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:0975-0978
EditorsEmailEditor's ORCID iD
Meddeb, Hosnihosni.meddeb@dlr.dehttps://orcid.org/0000-0001-8939-7910
Götz-Köhler, MaximilianMaximilian.Goetz@dlr.dehttps://orcid.org/0000-0002-6078-4359
Osterthun, NorbertNorbert.Osterthun@dlr.dehttps://orcid.org/0000-0003-2668-6605
Sergeev, Olegoleg.sergeev@dlr.dehttps://orcid.org/0000-0002-5022-6118
Gehrke, KaiKai.Gehrke@dlr.dehttps://orcid.org/0000-0002-0591-8289
Vehse, MartinMartin.Vehse@dlr.dehttps://orcid.org/0000-0003-0578-6121
Agert, Carstencarsten.agert@dlr.dehttps://orcid.org/0000-0003-4733-5257
Publisher:IEEE Xplore
Series Name:2021 IEEE 48th Photovoltaic Specialists Conference (PVSC)
Keywords:multiple quantum wells, absorbing nanophotonic resonator, semiconductor nanostructures, ultrathin solar cell, optoelectronic modeling
Event Title:IEEE 48th Photovoltaic Specialists Conference (PVSC) 2021
Event Location:Fort Lauderdale, USA
Event Type:international Conference
Event Dates:20-25 June 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: Meddeb Dite Hasanet, Hosni
Deposited On:20 Dec 2021 18:42
Last Modified:20 Dec 2021 18:42

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