Athanasiou, M., Papagiorgis, P., Manoli, A. et al. (8 more authors) (2020) InGaN nanohole arrays coated by lead halide perovskite nanocrystals for solid-state lighting. ACS Applied Nano Materials, 3 (3). pp. 2167-2175. ISSN 2574-0970
Abstract
Down-conversion of light via phosphors is central to the generation of white and multi-color emission for solid-state lighting. Lead halide perovskite nanocrystals (NCs) are viable contenders to phosphors as they offer higher emission yields with narrower linewidth and facile synthesis and compositional tunability across the visible. Herein, we employ green-emitting CsPbBr3 and FAPbBr3 and near infrared-emitting FAPbI3 NCs to efficiently down-convert the emission of InGaN/GaN structures. The nitride wafers are patterned into nanohole arrays which are filled by the perovskite NCs to minimize the nitride-NC separation while increasing the heterointerfacial area, thus improving light conversion via both non-radiative resonant and radiative energy transfer. The efficient quenching of the nitride emission dynamics in the presence of the NC overlayers accompanied by a concurrent increase of the NC emission, provides evidence of efficient light down-conversion with efficiencies as high as ~83±6% in the green and ~74±5% in the near-IR.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 American Chemical Society. |
Keywords: | InGaN/GaN; lead halide perovskites; nanocrystals; down-conversion; resonant energy transfer |
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: | Funder Grant number Engineering and Physical Sciences Research Council EP/H004602/1; EP/L017024/1; EP/M015181/1; EP/P006361/1 Seren Photonics Ltd N/A White Rose University Consortium N/A |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 24 Feb 2020 10:56 |
Last Modified: | 10 Dec 2021 12:21 |
Status: | Published |
Publisher: | American Chemical Society (ACS) |
Refereed: | Yes |
Identification Number: | 10.1021/acsanm.9b02154 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:157594 |