Fluorescent SiC as a new material for white LEDs

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Syväjärvi M, Müller J, Sun JW, Grivickas V, Ou Y, Jokubavicius V, Hens P, Kaiser M, Ariyawong K, Gulbinas K, Liljedahl R, Linnarsson MK, Kamiyama S, Wellmann P, Spiecker E, Ou H
Zeitschrift: Physica Scripta
Verlag: Institute of Physics
Jahr der Veröffentlichung: 2012
Band: T148
ISSN: 0031-8949
Sprache: Englisch


Abstract


Current III-V-based white light-emitting diodes (LEDs) are available. However, their yellow phosphor converter is not efficient at high currents and includes rare-earth metals, which are becoming scarce. In this paper, we present the growth of a fluorescent silicon carbide material that is obtained by nitrogen and boron doping and that acts as a converter using a semiconductor. The luminescence is obtained at room temperature, and shows a broad luminescence band characteristic of donor-to-acceptor pair recombination. Photoluminescence intensities and carrier lifetimes reflect a sensitivity to nitrogen and boron concentrations. For an LED device, the growth needs to apply low-off-axis substrates. We show by ultra-high-resolution analytical transmission electron microscopy using aberration-corrected electrons that the growth mechanism can be stable and that there is a perfect epitaxial relation from the low-off-axis substrate and the doped layer even when there is step-bunching.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Kaiser, Michl
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Müller, Julian Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Spiecker, Erdmann Prof. Dr.
Wellmann, Peter Prof. Dr.-Ing.
Professur für Werkstoffwissenschaften (Werkstoffe der Elektrotechnik)


Zusätzliche Organisationseinheit(en)
Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)


Einrichtungen weiterer Autorinnen und Autoren

Linköping University
Meijo University / 名城大学
Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH)
Technical University of Denmark / Danmarks Tekniske Universitet (DTU)
Vilnius University / Vilniaus universitetas


Zitierweisen

APA:
Syväjärvi, M., Müller, J., Sun, J.W., Grivickas, V., Ou, Y., Jokubavicius, V.,... Ou, H. (2012). Fluorescent SiC as a new material for white LEDs. Physica Scripta, T148. https://dx.doi.org/10.1088/0031-8949/2012/T148/014002

MLA:
Syväjärvi, Mikael, et al. "Fluorescent SiC as a new material for white LEDs." Physica Scripta T148 (2012).

BibTeX: 

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