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The optical spectrum of UVLED excitation using NTC nanometer particles to replace rare earth doping

Published online by Cambridge University Press:  20 May 2019

Lihong Su*
Affiliation:
Depart. of Applied Chemistry, Northwestern Polytechnical University. Xi’An, Shaanxi Prov.710129, China
Kan Chen
Affiliation:
Shaanxi Zoomview Company, 710065, Xi’an, Shaanxi. Province, China
Yongqiang Liu
Affiliation:
Engineering and the Environment, University of Southampton, Southampton, UK
ZiAo Zou
Affiliation:
Depart. of Applied Chemistry, Northwestern Polytechnical University. Xi’An, Shaanxi Prov.710129, China
Lihua Su
Affiliation:
Xi’an Communications Institute, 710106, Xi’an, Shaanxi. Province, China
*
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Abstract:

Ultraviolet light-emitting diodes (UVLEDs) with phosphor materials have considerable advantages over traditional illumination devices. Doping with rare earth ions can modify the optical spectrum of phosphor materials, but rare earths are very expensive. Thus, replacing rare earths with a common material would provide a great potential for the wide application in the future. In this study, we discovered that a novel type of semiconductor nanometre powder, namely manganese cobalt nickel copper oxide (MCNC), is able to emit blue-green wavelength spectrum when exited by 365-400nmUVLED. In addition, MCNC shows less attenuation of luminescence efficiency than other UVLED phosphor materials doped with rare earths with temperature increase. It is thus concluded that MCNC is a promising low-cost material to replace rare earths to adjust the optical spectrum wavelength of UVLED. This is the first time that nano-scale MCNC is reported to possess the property to change the optical spectrum wavelength of UVLED. This provides a new mechanical and nanometer phosphor material without rare earth doping to shift the wavelength spectrum.

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Copyright
Copyright © Materials Research Society 2019 

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