Haggar, J.I.H., Cai, Y. orcid.org/0000-0002-2004-0881, Ghataora, S.S. et al. (3 more authors) (2020) High modulation bandwidth of semipolar (11–22) InGaN/GaN LEDs with long wavelength emission. ACS Applied Electronic Materials, 2 (8). pp. 2363-2368. ISSN 2637-6113
Abstract
Visible light communication requires III-nitride LEDs with a high modulation bandwidth but have c-plane limitations. General illumination requires green/yellow III-nitride LEDs with high optical efficiency that are difficult to achieve on c-plane substrates. Micro-LEDs with a low efficiency are used to obtain a high modulation bandwidth. This paper demonstrates a record modulation bandwidth of 540 MHz for our semipolar green LEDs with a broad area. Semipolar yellow and amber LEDs with modulation bandwidths of 350 and 140 MHz, respectively, have also been reported, and are the longest wavelength III-nitride LEDs. These results agree with differential carrier lifetime measurements.
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Copyright, Publisher and Additional Information: | Copyright © 2020 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY) License (https://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. | ||||||||
Keywords: | Semipolar LEDs; Modulation bandwidth; InGaN; Recombination lifetime; VLC | ||||||||
Dates: |
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Institution: | The University of Sheffield | ||||||||
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) | ||||||||
Funding Information: |
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Depositing User: | Symplectic Sheffield | ||||||||
Date Deposited: | 13 Oct 2020 11:11 | ||||||||
Last Modified: | 13 Oct 2020 11:11 | ||||||||
Status: | Published | ||||||||
Publisher: | American Chemical Society (ACS) | ||||||||
Refereed: | Yes | ||||||||
Identification Number: | https://doi.org/10.1021/acsaelm.0c00399 | ||||||||
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