Search: onr:"swepub:oai:DiVA.org:liu-75149" >
Room temperature lu...
Room temperature luminescence properties of fluorescent SiC as white light emitting diode medium
-
- Sun, Jianwu (author)
- Linköpings universitet,Halvledarmaterial,Tekniska högskolan
-
- Jokubavicius, Valdas (author)
- Linköpings universitet,Halvledarmaterial,Tekniska högskolan
-
- Liljedahl, Rickard (author)
- Linköpings universitet,Halvledarmaterial,Tekniska högskolan
-
show more...
-
- Yakimova, Rositsa (author)
- Linköpings universitet,Halvledarmaterial,Tekniska högskolan
-
- Juillaguet, S. (author)
- Université Montpellier 2, France
-
- Camassel, J. (author)
- CNRS, Montpellier, France
-
- Kamiyama, S. (author)
- Meijo University, Nagoya, Japan
-
- Syväjärvi, Mikael (author)
- Linköpings universitet,Halvledarmaterial,Tekniska högskolan
-
show less...
-
(creator_code:org_t)
- Elsevier, 2012
- 2012
- English.
-
In: Thin Solid Films. - : Elsevier. - 0040-6090 .- 1879-2731. ; 522, s. 33-35
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- The high quantum efficiency of donor–acceptor-pair emission in N and B co-doped 6H–SiC opens the way for SiC to constitute as an efficient light-emitting medium for white light-emitting diodes. In this work, we evidence room temperature luminescence in N and B co-doped 6H–SiC fluorescent material grown by the Fast Sublimation Growth Process. Three series of samples, with eight different N and B doping levels, were investigated. In most samples, from photoluminescence measurements a strong N–B donor–acceptor-pair emission band was observed at room temperature, with intensity dependent on the nitrogen pressure in the growth chamber and boron doping level in the source. Low temperature photoluminescence spectra showed that N bound exciton peaks exhibited a continuous broadening with increasing N2 pressure during the growth, unambiguously indicating an opportunity to control the N doping in the epilayer by conveniently changing the N2 pressure. Finally, the crystal quality of the N and B doped 6H–SiC was evaluated by X-ray diffraction measurements. The ω rocking curves of (0006) Bragg diffractions from the samples grown with lower and higher N2 pressure show almost the same value of the full width at half maximum as that collected from the substrate. This suggests that the N and B doping, which is expected to give rise to an efficient donor–acceptor-pair emission at room temperature, does not degrade the crystal quality.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- SiC; Photoluminescence; Donor acceptor pair emission
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database