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Paper Abstract and Keywords
Presentation 2023-01-27 14:35
Study of dispersed inorganic EL devices using ZnS:Cu nanophosphors -- Improvement of PL and EL characteristics by liquid-phase mixing ZnS:Cu and CuS particles --
Rei Matsukuma, Ryousuke Nagai, Koutoku Ohmi (Tottori Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) For the dispersed inorganic electroluminescence (EL) devices using ZnS:Cu phosphor, improvements of luminance and luminous efficiency are required. In this study, we have attempted both high-concentration activation of Cu+ and high-density formation of CuxS which acts as a carrier source. The ZnS:Cu nanoparticles and CuS particles were stirred in a solution, and CuS was adhered around ZnS:Cu nanoparticles. In the photoluminescence (PL) measurement, the direct excitation band due to Cu+ increased compared to the unadhered one. However, the conduction charge of the EL device was not changed. These results indicate that only Cu+ activation was enhanced by the CuS adhesion.
Keyword (in Japanese) (See Japanese page) 
(in English) dispersive type EL / nanophosphor / ZnS:Cu / liquid phase reaction / / / /  
Reference Info. ITE Tech. Rep., vol. 47, no. 1, IDY2023-10, pp. 37-40, Jan. 2023.
Paper # IDY2023-10 
Date of Issue 2023-01-19 (IDY) 
ISSN Print edition: ISSN 1342-6893    Online edition: ISSN 2424-1970
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Conference Information
Conference Date 2023-01-26 - 2023-01-27 
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Paper Information
Registration To IDY 
Conference Code 2023-01-IDY-SSL-EID-JC-EDD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study of dispersed inorganic EL devices using ZnS:Cu nanophosphors 
Sub Title (in English) Improvement of PL and EL characteristics by liquid-phase mixing ZnS:Cu and CuS particles 
Keyword(1) dispersive type EL  
Keyword(2) nanophosphor  
Keyword(3) ZnS:Cu  
Keyword(4) liquid phase reaction  
1st Author's Name Rei Matsukuma  
1st Author's Affiliation Tottori University (Tottori Univ.)
2nd Author's Name Ryousuke Nagai  
2nd Author's Affiliation Tottori University (Tottori Univ.)
3rd Author's Name Koutoku Ohmi  
3rd Author's Affiliation Tottori University (Tottori Univ.)
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Speaker Author-1 
Date Time 2023-01-27 14:35:00 
Presentation Time 10 minutes 
Registration for IDY 
Paper # IDY2023-10 
Volume (vol) vol.47 
Number (no) no.1 
Page pp.37-40 
Date of Issue 2023-01-19 (IDY) 

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