CAJ | 학술논문

芯片与荧光粉的匹配优劣是影响白光LED性能的重要因素,针对这一问题,本文提出了LED荧光粉的性能表征与测量方法.采用了一种双分光式荧光粉测量系统,分析了荧光粉的光谱特性,得到了其三维光谱分布.并用发光效率,量子效率和能量效率来评价荧光粉特性.通过评价具有不同峰值波长的LED与荧光粉的匹配,得到了其最优匹配.结果表明此种系统和评价方法不仅可以得到荧光粉的特性,对于研究高效率白光LED有重要的意义.
심편여형광분적필배우렬시영향백광LED성능적중요인소,침대저일문제,본문제출료LED형광분적성능표정여측량방법.채용료일충쌍분광식형광분측량계통,분석료형광분적광보특성,득도료기삼유광보분포.병용발광효솔,양자효솔화능량효솔래평개형광분특성.통과평개구유불동봉치파장적LED여형광분적필배,득도료기최우필배.결과표명차충계통화평개방법불부가이득도형광분적특성,대우연구고효솔백광LED유중요적의의.
Aiming at the problem that the matching between phosphors and chips has significantly influence on white LEDs, characterization and measurement of LED phosphors were presented. According to the measurement principle of phosphors, a double splitting system was presented. Phosphor's spectral characteristics were analyzed, and three-dimensional spectral distribution was achieved by combination. Luminous efficacy, quantum efficiency and energy efficiency were brought forward to evaluate phosphor's performance. By evaluating the matching between kinds of phosphors and LED chips with different peak wavelengths but the same power, the optimal matching was acquired. Results show that the system and evaluation method can not only determine LED phosphors' characteristics, but also has significant meaning in the research of achieving high-efficiency white LEDs.