dc.contributor.author |
Zhao, Chao |
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dc.contributor.author |
Ng, Tien Khee |
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dc.contributor.author |
Prabaswara, Aditya |
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dc.contributor.author |
Conroy, Michele |
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dc.contributor.author |
Jahangir, Shafat |
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dc.contributor.author |
Frost, Thomas |
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dc.contributor.author |
O'Connell, John |
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dc.contributor.author |
Holmes, Justin D. |
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dc.contributor.author |
Parbrook, Peter J. |
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dc.contributor.author |
Bhattacharya, P. |
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dc.contributor.author |
Ooi, Boon S. |
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dc.date.accessioned |
2016-03-07T13:05:43Z |
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dc.date.available |
2016-03-07T13:05:43Z |
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dc.date.issued |
2015-07-24 |
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dc.identifier.citation |
ZHAO, C., NG, T. K., PRABASWARA, A., CONROY, M., JAHANGIR, S., FROST, T., O'CONNELL, J., HOLMES, J. D., PARBROOK, P. J., BHATTACHARYA, P. & OOI, B. S. 2015. An enhanced surface passivation effect in InGaN/GaN disk-in-nanowire light emitting diodes for mitigating Shockley-Read-Hall recombination. Nanoscale, 7, 16658-16665. http://dx.doi.org/10.1039/C5NR03448E |
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dc.identifier.volume |
7 |
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dc.identifier.issued |
40 |
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dc.identifier.startpage |
16658 |
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dc.identifier.endpage |
16665 |
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dc.identifier.issn |
2040-3364 |
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dc.identifier.uri |
http://hdl.handle.net/10468/2418 |
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dc.identifier.doi |
10.1039/c5nr03448e |
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dc.description.abstract |
We present a detailed study of the effects of dangling bond passivation and the comparison of different sulfide passivation processes on the properties of InGaN/GaN quantum-disk (Qdisk)-in-nanowire based light emitting diodes (NW-LEDs). Our results demonstrated the first organic sulfide passivation process for nitride nanowires (NWs). The results from Raman spectroscopy, photoluminescence (PL) measurements, and X-ray photoelectron spectroscopy (XPS) showed that octadecylthiol (ODT) effectively passivated the surface states, and altered the surface dynamic charge, and thereby recovered the band-edge emission. The effectiveness of the process with passivation duration was also studied. Moreover, we also compared the electro-optical performance of NW-LEDs emitting at green wavelength before and after ODT passivation. We have shown that the Shockley–Read–Hall (SRH) non-radiative recombination of NW-LEDs can be greatly reduced after passivation by ODT, which led to a much faster increasing trend of quantum efficiency and higher peak efficiency. Our results highlighted the possibility of employing this technique to further design and produce high performance NW-LEDs and NW-lasers. |
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dc.description.sponsorship |
King Abdullah University of Science and Technology, Saudi Arabia (KAUST Competitive Research Grant) |
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dc.format.mimetype |
application/pdf |
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dc.language.iso |
en |
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dc.publisher |
The Royal Society of Chemistry |
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dc.relation.uri |
http://pubs.rsc.org/en/journals/journalissues/nr#!recentarticles&adv |
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dc.rights |
© The Royal Society of Chemistry 2015. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. |
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dc.rights.uri |
http://creativecommons.org/licenses/by/3.0/ |
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dc.subject |
Efficiency |
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dc.subject |
Nanowires |
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dc.subject |
Passivation |
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dc.subject |
Quantum efficiency |
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dc.subject |
X ray photoelectron spectroscopy |
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dc.subject |
Band-edge emissions |
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dc.subject |
Electro optical performance |
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dc.subject |
Nanowire light emitting diodes |
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dc.subject |
Non-radiative recombinations |
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dc.subject |
Photoluminescence measurements |
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dc.subject |
Shockley-Read-Hall recombinations |
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dc.subject |
Sulfide passivations |
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dc.subject |
Light emitting diodes |
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dc.title |
An enhanced surface passivation effect in InGaN/GaN disk-in-nanowire light emitting diodes for mitigating Shockley-Read-Hall recombination |
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dc.type |
Article (peer-reviewed) |
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dc.internal.authorcontactother |
Justin D. Holmes, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: j.holmes@ucc.ie |
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dc.internal.availability |
Full text available |
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dc.date.updated |
2015-12-11T10:41:29Z |
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dc.description.version |
Published Version |
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dc.internal.rssid |
324341717 |
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dc.contributor.funder |
King Abdullah University of Science and Technology
|
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dc.description.status |
Peer reviewed |
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dc.identifier.journaltitle |
Nanoscale |
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dc.internal.copyrightchecked |
No. !!CORA!! Non standard RSC policy. This article is licensed under Creative Commons Attribution 3.0 Unported Licence |
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dc.internal.licenseacceptance |
Yes |
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dc.internal.IRISemailaddress |
j.holmes@ucc.ie |
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