Von den Driesch, N, Stange, D, Rainko, D et al. (11 more authors) (2018) Advanced GeSn/SiGeSn Group IV Heterostructure Lasers. Advanced Science, 5 (6). 1700955. ISSN 2198-3844
Abstract
Growth and characterization of advanced group IV semiconductor materials with CMOS‐compatible applications are demonstrated, both in photonics. The investigated GeSn/SiGeSn heterostructures combine direct bandgap GeSn active layers with indirect gap ternary SiGeSn claddings, a design proven its worth already decades ago in the III–V material system. Different types of double heterostructures and multi‐quantum wells (MQWs) are epitaxially grown with varying well thicknesses and barriers. The retaining high material quality of those complex structures is probed by advanced characterization methods, such as atom probe tomography and dark‐field electron holography to extract composition parameters and strain, used further for band structure calculations. Special emphasis is put on the impact of carrier confinement and quantization effects, evaluated by photoluminescence and validated by theoretical calculations. As shown, particularly MQW heterostructures promise the highest potential for efficient next generation complementary metal‐oxide‐semiconductor (CMOS)‐compatible group IV lasers.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
Keywords: | GeSn; heterostructures; lasers; multi‐quantum wells; SiGeSn |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) |
Funding Information: | Funder Grant number Royal Society IE131593 |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Mar 2018 10:54 |
Last Modified: | 14 Jul 2018 17:28 |
Status: | Published |
Publisher: | Wiley Open Access |
Identification Number: | 10.1002/advs.201700955 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:128271 |