Effect of temperature on intense green emitting Na₂Ca(PO₄)F:Mn²⁺ phosphor.
An intense green luminescent Na₂Ca(PO₄)F:Mn²⁺ phosphor has been prepared at high temperature by reduction treatment in a charcoal environment. The emission band of Mn²⁺ was obtained at around 522 nm (green) under 259 nm excitation. Enhancement in emission intensity arising from the thermal treatment is reported. The intense emission of the spectrum was assigned to electronic transitions ⁴T₁ → ⁶A₁ of Mn²⁺ ions. Intense PL emission suggested that temperature employed plays an important role in the present matrix. X-ray diffraction pattern, photoluminescence and morphology by SEM of the host lattice of phosphors at different temperatures have been reported in this paper. The results obtained show that the present phosphor has potential for application in green emitting phosphors for the lamp industry.
Shinde
K N
KN
Department of Physics, N.S. Science and Arts College, Bhadrawati 442902, India.
Nagpure
I M
IM
Fulke
Abhay B
AB
Dhoble
S J
SJ
D049408:Luminescent Agents / Q000737:chemistry*; D008345:Manganese / Q000737:chemistry; D013696:Temperature
D049408:Luminescent Agents; D008345:Manganese