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(Color online) Absorption spectra of (host material, dotted line) and (phosphor, solid line).
(Color online) Normalized PL and PLE spectra of .
(Color online) Schematic diagram of the energy levels of in .
Maximum PL intensities of with varying concentration.
(Color online) Electroluminescent spectra of white LEDs using (a) chip and (b) chip and (c) a yellow LED using chip measured under a forward bias of .
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