Green luminescent ZnO:Cu2+ nanoparticles for their applications in white-light generation from UV LEDs

Green luminescent ZnO:Cu2+ nanoparticles for their applications in white-light generation from UV LEDs: "

Abstract  

Copper doped ZnO nanoparticles were synthesized by a chemical technique based on a hydrothermal method. The crystallite sizes,
estimated by XRD and TEM/SEM for different doping percentage of Cu²⁺ (1–10%), were found to be in the range of ~10–15 nm. TEM/SEM images showed formation of uniform nanorods, the aspect ratio
of which varied with doping percentage. Photoluminescence (PL) measurement showed strong green visible emission and PL intensity
was found enhanced with increase in doping percentage. The increase in the PL intensity was mainly due to Cu incorporation
in ZnO lattice. Currently, light-emitting diodes (LEDs) giving ultraviolet emission have been combined with broad-band visible
green phosphors to make white-light LEDs. Thus, green luminescent ZnO:Cu²⁺ nanoparticles are seen as necessary and condemnatory constituent for white-light generation from UV LEDs, underlying the
importance of the current work.

• Content Type Journal Article
• Category Research Paper
• DOI 10.1007/s11051-010-9916-3
• Authors
  • Prashant K. Sharma, University of Allahabad Nanotechnology Application Centre (Formerly Nanophosphor Application Centre) Allahabad 211002 India
  • Manvendra Kumar, University of Allahabad Nanotechnology Application Centre (Formerly Nanophosphor Application Centre) Allahabad 211002 India
  • Avinash C. Pandey, University of Allahabad Nanotechnology Application Centre (Formerly Nanophosphor Application Centre) Allahabad 211002 India

• Journal Journal of Nanoparticle Research
• Online ISSN 1572-896X
• Print ISSN 1388-0764

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