Hydrothermal synthesis of self-emitting Y(V,P)O-4 nanophosphors for fabrication of transparent blue-emitting display device

초록

Self-emiting Y(V-x,P1-x)O-4 blue nanophosphors with various compositons (x=0.1-0.9) were synthesized by a facile hydrothermal route and subsequently annealed at different temperatures of 800-1100 degrees C for 2 h. A higher content of vanadate in Y(V,P)O-4 nanophosphors resulted in a larger particle growth upon annealing. The blue luminescence under a vacuum ultraviolet excitation increased with an increasing phosphate content. Considering the size and luminescence, Y(V-0.1,P-0.9)O-4 nanophosphors annealed at 800, 1000, and 1100 degrees C were used for the formation of transparent blue emissive layer. Nanophosphor layer was uniformly deposited on glass substrate by a screen-printing. similar to 0.9 mu m thick nanophosphor layer that was prepared with 1000 degrees C-annealed Y(V-0.1,P-0.9)O-4 nanophosphor showed a high visible transmittance value of 78%. Transparent blue-emitting test panel of plasma display was simply fabricated using nanophosphor layer/glass as a rear panel and combining it with the front panel used in the current plasma display panel, and their discharge luminance properties were discussed. (C) 2012 Elsevier B.V. All rights reserved.

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