ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
For the growth of Electroluminescent (EL) device market, the attention of manyresearchers is centered on improving the properties such as brightness, power consumption, devicereliability, etc. The powder EL device is one of solutions for the easy mass production, thesimplification of structure, and low cost. Although the powder process is the solution, that has theproblem with the poor brightness than the film process. So, we focused on increasing the brightnessof powder EL device. The emissive layer was made up the composites adding metal oxidenanopowder such as TiO2 and ZnO to powder phosphors. As the data of previous researcher, the TiO2and ZnO had the different dominating traps by photovoltage measure, that is, TiO2 show hole traps,ZnO show electron traps [1]. The brightness of powder EL device proportions to the high electricfieldformation. The TiO2 or ZnO in the powder phosphor composite can help the emission that may beadvantageous to form high electricfield at low voltage. The EL devices with green ZnS phosphorwere fabricated using spin coating method. The effect of TiO2 and ZnO on the luminescent propertyof EL device was investigated. The brightness was obtained as applied driving voltage at 400 Hz andfrequency variation at 50 V
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.55.150.pdf
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