NDLI: Improvement in the cathodoluminescence property of ZnAl:Mn highly-chromatic-pure green phosphor

Content Provider	IEEE Xplore Digital Library
Author	Nagura, T. Kominami, H. Nakanishi, Y. Hara, K. Honma, T.
Copyright Year	2009
Description	Author affiliation: Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan (Nagura, T.; Kominami, H.; Nakanishi, Y.; Hara, K.) \|\| Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 Japan (Honma, T.)
Abstract	ZnAl:Mn shows green cathodoluminescence (CL) with a peak at 510 nm, which is attributed to $the^{4}T$ transition within the 3d orbital of a $Mn^{2+}$ ion [1]. This luminescence is very attractive due to its high chromatic purity, which leads us to expect the use of ZnAl:Mn as a green phosphor to widen color gamut in displays like a field emission display and a vacuum fluorescence display. In recent years, a variety of synthesis techniques, such as a solid phase method [2,3], a hydrothermal method [4], a spray pyrolysis method [5], a combustion method [1], have been studied for the preparation of the ZnAl:Mn phosphor. It has also been reported that the thermal treatment in a reducing atmosphere after synthesis dramatically increases the luminescent efficiency of this phosphor [2,3,5]. These reports have described that the improvement is attributed to the increase of $Mn^{2+}$ content, which results from the reduction of $Mn^{3+}$ ions incorporated in the host crystal. On the other hand, we have found that intense CL is observed without a reduction treatment when the ratio of Zn and Al sources is properly selected in the synthesis of ZnAl:Mn by a citric gel method [7]. In this study, in order to understand these factors further, we investigated systematically the effects of both the ratio of sources and the reduction condition on the luminescent property of ZnAl:Mn for the samples prepared by the solid phase synthesis.
Starting Page	241
Ending Page	242
File Size	398894
Page Count	2
File Format	PDF
ISBN	9781424435876
DOI	10.1109/IVNC.2009.5271639
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-20
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phosphors Flat panel displays Solids Atmosphere Zinc Powders Impurities Synchrotron radiation Luminescence Fluorescence
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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