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为了改善白光LED用荧光材料效率低、均匀性差、光衰大、寿命短及物化性能差等不足,本文采用单晶荧光材料取代荧光粉来制备白光LED,并对白光LED用新型YAG单晶荧光材料的制备和光谱性能进行了研究.采用提拉法生长了白光LED用Ce∶YAG及Pr,Ce∶YAG晶体,并通过吸收光谱,激发、发射光谱对晶体材料的光谱特性进行表征.研究表明,Ce∶YAG单晶荧光材料可以被发射波长460 nm左右的蓝光芯片有效激...
PR-320B 荧光灯粉层厚度测试仪
光散射法 分层厚度 光学检测仪
2011/10/25
PR-320B 荧光灯粉层厚度测试仪的主要功能是采用透射式光散射法测量管壁粉层的有效光学厚度、管壁粉层不同区域的粉层均匀性。
Synthesis and optical spectroscopy of the Eu- and Pr-doped glasses with SrO–2B2O3 composition
borate glasses and crystals Eu3+ centre Pr3+ centre optical absorption luminescence, decay
2011/5/9
A series of Eu- and Pr-doped glasses with SrO–2B2O3 (or SrB4O7) composition were obtained
and their spectroscopic properties were investigated. The SrB4O7 polycrystalline compounds were
synthesised ...