  Synthesis and characterization of Nanocrystalline long persistent
SrAl2O4:Eu2+, Dy3+ phosphor via a modified combustion process has been
presented in the paper. In this synthesis process, a mixture of respective
metal nitrates, flux and combustible agent (urea/camphor) were thermally
treated with slight modification at 400-600oC for about 5 minutes. It resulted
in low-density voluminous mass in contrast to a solid lump by conventional
solid-state method. The present work reports the changes made in the combustion
process to achieve the homogenous incorporation of dopants and large-scale
production of the nanophosphor in a short interval of time. The samples have
been characterized for nanophase, structural and luminescent properties.
  PACS Code: 33.50.-j, 33.50.Dq, 78.55.-m, 68.37.Hk
