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Light emission enhancement from ZnO nanostructured films grown on Gr/SiC substrates
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-1000-0437
Aristotle University of Thessaloniki, Thessaloniki, Greece.
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2016 (English)In: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 99, 295-301 p.Article in journal (Refereed) PublishedText
Abstract [en]

We report on the application of a single layer graphene substrates for the growth of polycrystalline ZnO films with advanced light emission properties. Unusually high ultraviolet (UV) and visible (VIS) photoluminesce was observed from the ZnO/Gr/SiC structures in comparison to identical samples without graphene. The photoluminescence intensity depends non-monotonically on the films thickness, reaching its maximum for 150 nm thick films. The phenomena observed is explained as due to the dual graphene role: i) the dangling bond free substrate, providing growth of relaxed thin ZnO layers ii) a back reflector active mirror of the Fabry-Perot cavity that is formed. The reported results demonstrate the potential of two-dimensional carbon materials integration with light emitting wide band gap semiconductors and can be of practical importance for the design of future optoelectronic devices.

Place, publisher, year, edition, pages
Pergamon Press, 2016. Vol. 99, 295-301 p.
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-123947DOI: 10.1016/j.carbon.2015.12.010ISI: 000369069800035OAI: oai:DiVA.org:liu-123947DiVA: diva2:894293
Note

Funding agencies:  Linkoping Linnaeus Initiative for Novel Functional Materials (LiLi-NFM); Angpanneforeningens Forskningsstiftelse [14-517]; European Union [604391]

Available from: 2016-01-14 Created: 2016-01-14 Last updated: 2016-03-10Bibliographically approved

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The full text will be freely available from 2016-12-18 00:00
Available from 2016-12-18 00:00

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Khranovskyy, VolodymyrShtepliuk, IvanIvanov, Ivan GueorguievYakimova, Rositsa
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Semiconductor MaterialsFaculty of Science & Engineering
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Carbon
Condensed Matter Physics

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