Creation of phase-separated silicate glasses containing Cu cluster ions for luminous materials applied to white color LED.

为了获得具有高的热稳定性和紫外光稳定性的高功率发光材料，采用传统的熔融法制备了在紫外LED光照射下表现出暖黄色发光的含Cu^+团簇的碱金属硼硅酸盐玻璃。所得玻璃显示出约600 nm的黄色发光。通过优化Cu离子和还原剂的添加量，发光强度大大提高。通过将氧化钙掺入玻璃组合物中，发射强度增加得更高。

The phase-separated alkali metal-borosilicate glasses containing Cu^+clusters which exhibit warm color yellow luminescence under irradiation of ultraviolet(UV) LED light were prepared by use of a conventional melting method in order to achieve high power luminous material having high thermal and UV light stability. The obtained glass showed yellow luminescence of around 600 nm. The emission intensity increased largely by optimizing additive amounts of Cu ions and a reducing agent. The emission intensity increased much higher by incorporation of calcium oxide into the glass composition.