| 简介 |
PURPOSE : A phosphor for white light-emitting diodes is provided to obtain a unitary phosphor composition emitting the very stable white light, which has the improved color rendering index and can be used as the fluorescent material layer in the white light-emitting diode apparatus.CONSTITUTION : A phosphor for white light-emitting diodes comprises hollow borate activated by the rare-earth ion and is represented by the formula : (M1-m-nCemEun)2BO3X. In the equation, M is at least one element selected from a group consisting of Ca, Sr and Ba; X is at least one element selected from a group consisting of Cl and Br; 0 © KIPO 2009 |
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