Open AccessDevelopment of nanophosphors for light emitting diodes
Author(s) -
Hisham Menkara,
Richard A. Gilstrap,
Thomas Morris,
Mazen Minkara,
B. K. Wagner,
Christopher J. Summers
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.00a972
Subject(s) - phosphor , materials science , light emitting diode , optoelectronics , white light , optics , diode , quantum yield , doping , quantum efficiency , color rendering index , led lamp , band gap , fluorescence , physics
We report the development of new nanophosphor structures based on the Mn-doped ZnSeS material system to enhance the color properties, luminosity and efficiency of white LEDs. These structures have been demonstrated for phosphor-based white LED applications utilizing both blue and UV LED systems. Bandgap tuning for near UV (405 nm) and blue (460 nm) excitations are reported. Using various optimization procedures, we have produced ZnSe:Mn nanoparticles with an external quantum yield greater than 80%.