负载于活性氮化硼上的有机荧光染料：用于高性能白光发光二极管的一种有前景的蓝光激发磷光体。

Organic fluorescent dyes supported on activated boron nitride: a promising blue light excited phosphors for high-performance white light-emitting diodes.

作者信息

Li Jie, Lin Jing, Huang Yang, Xu Xuewen, Liu Zhenya, Xue Yanming, Ding Xiaoxia, Luo Han, Jin Peng, Zhang Jun, Zou Jin, Tang Chengchun

机构信息

1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China.

出版信息

Sci Rep. 2015 Feb 16;5:8492. doi: 10.1038/srep08492.

DOI:10.1038/srep08492

PMID:25682730

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4329563/

Abstract

We report an effective and rare-earth free light conversion material synthesized via a facile fabrication route, in which organic fluorescent dyes, i.e. Rhodamine B (RhB) and fluorescein isothiocyanate (FITC) are embedded into activated boron nitride (αBN) to form a composite phosphor. The composite phosphor shows highly efficient Förster resonance energy transfer and greatly improved thermal stability, and can emit at broad visible wavelengths of 500-650 nm under the 466 nm blue-light excitation. By packaging of the composite phosphors and a blue light-emitting diode (LED) chip with transparent epoxy resin, white LED with excellent thermal conductivity, current stability and optical performance can be realized, i.e. a thermal conductivity of 0.36 W/mk, a Commission Internationale de 1'Eclairage color coordinates of (0.32, 0.34), and a luminous efficiency of 21.6 lm·W(-1). Our research opens the door toward to the practical long-life organic fluorescent dyes-based white LEDs.

摘要

我们报道了一种通过简便制备路线合成的高效且不含稀土的光转换材料，其中有机荧光染料，即罗丹明B（RhB）和异硫氰酸荧光素（FITC）被嵌入到活性氮化硼（αBN）中以形成复合荧光粉。该复合荧光粉显示出高效的Förster共振能量转移以及大大提高的热稳定性，并且在466nm蓝光激发下可在500 - 650nm的宽可见波长范围内发光。通过用透明环氧树脂封装复合荧光粉和蓝光发光二极管（LED）芯片，可以实现具有优异热导率、电流稳定性和光学性能的白光LED，即热导率为0.36W/mk，国际照明委员会色坐标为（0.32，0.34），发光效率为21.6lm·W⁻¹。我们的研究为基于有机荧光染料的实用长寿命白光LED打开了大门。