| http://www.w3.org/ns/prov#value | - The semiconductor is preferably a nitride-base phosphor semiconductor which can efficiently excite a semiconductor and can efficiently emit light having a comparatively short wave length (the general formula: IniGajAlkN, provided that 0???i, 0???j, 0???k, i+j+k=1). [0650] When the gallium nitride compound semiconductor is used, materials such as sapphire, spinel, SiC, Si, ZnO and GaN are preferabl
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