SULFIDE PHOSPHOR AND LIGHT-EMITTING DEVICE USING THE SAME

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PURPOSE : A sulfide phosphor is provided to ensure excellent luminescent brightness(luminescence intensity) and chromatic purity(green degree) by comprising crystals with a specific composition.CONSTITUTION : A sulfide phosphor comprises crystals represented by chemical formula : (A_(1-x-y)B_xC_y)_aD_bE_cS_(5+3c/2) : pEu^(2+), qRe^(3+), rQ. In chemical formula, A is a divalent metal excluding alkaline earth metal; B and C are alkaline earth metal; D is a trivalent non-transition metal; E is a trivalent transition metal; Re is a trivalent rare earth metal; Q is halogen; x and y satisfy 0 COPYRIGHT KIPO 2011