Other
Scientific paper
Sep 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2554..253t&link_type=abstract
Proc. SPIE Vol. 2554, p. 253-264, Growth and Characterization of Materials for Infrared Detectors II, Randolph E. Longshore; Jan
Other
Scientific paper
We present the results of a systematic photoluminescence study of ZnGa2O4:Mn phosphor powder. This phosphor exhibits bright green luminescence with a spectral peak at 2.46 eV and CIE chromaticity coordinates of x equals 0.073 and y equals 0.696 at room temperature. At low temperatures the luminescence consisted of three components assigned to the 4T1-6A1 inner transition of the 3D electrons of Mn2+ ions located on different sites of the host crystal. Selective excitations were used to validate the assignment of these features based on a strong-field scheme. The photoluminescence lifetime showed a single exponential decay of about 4 ms and at T equals 1.6 K an optical phonon related fine structure [Ephonon equals (8.2 plus or minus 0.2) meV] of the main photoluminescence line was observed. These results indicate that Mn-doped ZnGa2O4 has the potential to serve as a green phosphor for field emission display (FED) devices. The CIE coordinates of the green emission measured for this phosphor powder are also sufficient to produce a wide color gamut and a true white color when combined with other red and blue phosphors in FED display devices.
Jacobsen Stuart M.
McClelland S. K.
Park Won-Gil
Summers Christopher J.
Tomm J. W.
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