Ghataora, S., Smith, R.M. orcid.org/0000-0002-7718-7796, Athanasiou, M. et al. (1 more author) (2018) Electrically injected hybrid organic/inorganic III-nitride white light-emitting diodes with nonradiative Förster resonance energy transfer. ACS Photonics, 5 (2). pp. 642-647. ISSN 2330-4022
Abstract
An electrically injected hybrid organic/inorganic III-nitride white light-emitting diode (LED) has been fabricated by using a two-dimensional (2D) microhole array structure. The hybrid LED geometry significantly enhances proximity between the inorganic active-region and the down-converting yellow organic light-emitting polymers (OLEPs), enabling the near-field nonradiative Förster resonance energy transfer (FRET) process with high efficiency while retaining excellent electrical characteristics of an unpatterned planar LED. A reduction in the recombination lifetime in the InGaN/GaN blue active region has been observed with the hybrid device, confirming the nonradiative FRET process occurring between the InGaN/GaN blue active region and the yellow organic polymer. This results in a typical FRET efficiency of 16.7%, where the FRET interaction area accounts for approximately 0.64% of the remaining blue-emitting inorganic LED, but enhancing total device efficiency. An optimized white-light EL emission is achieved with typical CIE color coordinates at (0.29, 0.32).
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 American Chemical Society. ACS AuthorChoice - This is an open access article published under an ACS AuthorChoice (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
Keywords: | hybrid white LEDs; InGaN/GaN emitters; microhole arrays; nonradiative recombination lifetime; organic emitters |
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) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 10 Aug 2018 09:54 |
Last Modified: | 10 Aug 2018 09:54 |
Published Version: | https://doi.org/10.1021/acsphotonics.7b01291 |
Status: | Published |
Publisher: | American Chemical Society |
Refereed: | Yes |
Identification Number: | 10.1021/acsphotonics.7b01291 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:133649 |