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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
Abstract
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/ | ||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||
| Title: | Ultrathin Multiple Quantum Wells Solar Cell Based on Silicon/Germanium Nanostructures | ||||||||||||||||||||||||
| Authors: |
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| 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 SCOPUS: | Yes | ||||||||||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||||||||||
| DOI: | 10.1109/PVSC43889.2021.9519023 | ||||||||||||||||||||||||
| Page Range: | 0975-0978 | ||||||||||||||||||||||||
| Editors: |
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| Publisher: | IEEE Xplore | ||||||||||||||||||||||||
| Series Name: | 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC) | ||||||||||||||||||||||||
| ISSN: | 0160-8371 | ||||||||||||||||||||||||
| ISBN: | 978-166541922-2 | ||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||
| 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 | ||||||||||||||||||||||||
| Organizer: | IEEE | ||||||||||||||||||||||||
| 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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