Cited 9 time in webofscience Cited 13 time in scopus

Enhanced blue photoluminescence realized by copper diffusion doping of ZnO thin films

Title
Enhanced blue photoluminescence realized by copper diffusion doping of ZnO thin films
Authors
Allabergenov, B[Allabergenov, Bunyod]Chung, SH[Chung, Seok-Hwan]Jeong, SM[Jeong, Soon Moon]Kim, S[Kim, Sungjin]Choi, B[Choi, Byeongdae]
DGIST Authors
Chung, SH[Chung, Seok-Hwan]Jeong, SM[Jeong, Soon Moon]Choi, B[Choi, Byeongdae]
Issue Date
2013-10-01
Citation
Optical Materials Express, 3(10), 1733-1741
Type
Article
Article Type
Article
Keywords
Amorphous FilmsAmorphous SiliconBlue PhotoluminescenceChromaticity DiagramCopperCopper DiffusionDepositionDouble-Layer FilmsE-Beam DepositionEmission CentersLight EmissionLuminescence IntensityMetallic FilmsMixturesOptical FilmsOxygen AnnealingPhotoluminescencePulsed Laser DepositionSemiconductor DopingZinc Oxide
ISSN
2159-3930
Abstract
ZnO thin films with blue photoluminescence (PL) have been fabricated through Cu diffusion doping. A CuOx-ZnO mixture, and Cu/ZnO double layer, films were prepared on amorphous SiOx/Si substrates by pulsed laser deposition (PLD), and electron beam (e-beam) deposition, respectively. After sequential oxygen annealing, CuOx-ZnO mixture films exhibited green emission centered at 523 nm. However, Cu/ZnO double layer films differed in producing a blue emission centered at 480 nm. Detailed analysis identified that this blue shift in the emission center resulted from increased blue emissions attributed to Cu dopants in the film by e-beam deposition. Luminescence intensity was increased to 6 cd/m2 for a sample annealed at 700 deg;C. Color points were close to the locus of points following the line of a black-body-radiator on the CIE 1931 XY chromaticity diagram. The present results show that Cu-doped ZnO has strong potential as a cost effective phosphor for use in down converting LEDs. © 2013 Optical Society of America.
URI
http://hdl.handle.net/20.500.11750/3191
DOI
10.1364/OME.3.001733
Publisher
OSA - The Optical Society
Related Researcher
Files:
There are no files associated with this item.
Collection:
Intelligent Devices and Systems Research Group1. Journal Articles


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