CAJ | 학술논문

根据X射线衍射图谱埘铈掺杂的钆镓铝石榴石相玻璃陶瓷的晶体结构进行分析,采用直径10英寸积分球结合CCD(charge coupled device)探测器系统,对蓝色半导体发光二极管激发下铈掺杂钆镓铝石榴石相玻璃陶瓷的荧光光谱进行测试,解析出样品发光的绝对光谱功率分布,推导出光量子数分布,求得荧光量子产率和组合白光的色坐标及其相关色温.结果表明,所调查的铈掺杂钆镓铝石榴石相玻璃陶瓷在蓝光LED激发下的荧光量子产率为29.2％,所获得组合白光的色坐标x=19,y=0.349,相关色温为6 086K.尽管该混品陶瓷的荧光量子产率稍小于铈掺杂YAG玻璃陶瓷,但其与蓝光LED组合后发光的色温也明显低于后者,从而为舒适型LED照明玻璃陶瓷的进一步优化提供了新思路.
근거X사선연사도보시시참잡적구가려석류석상파리도자적정체결구진행분석,채용직경10영촌적분구결합CCD(charge coupled device)탐측기계통,대람색반도체발광이겁관격발하시참잡구가려석류석상파리도자적형광광보진행측시,해석출양품발광적절대광보공솔분포,추도출광양자수분포,구득형광양자산솔화조합백광적색좌표급기상관색온.결과표명,소조사적시참잡구가려석류석상파리도자재람광LED격발하적형광양자산솔위29.2％,소획득조합백광적색좌표x=19,y=0.349,상관색온위6 086K.진관해혼품도자적형광양자산솔초소우시참잡YAG파리도자,단기여람광LED조합후발광적색온야명현저우후자,종이위서괄형LED조명파리도자적진일보우화제공료신사로.
The crystalline phases of Ce~(3+)-doped gadolinium gallium aluminum garnet (GGAG) glass-ceramics were investigated by X-ray diffraction, and the fluorescence spectra were recorded under the pumping of blue light-emitting diode (LED) using an integrating sphere of 10-inch in diameter, which connected to a CCD detector. The spectral power distribution of the glass-ceramics was obtained from the measured spectra first, and then the quantum yield was derived based on the photon distribution. The quantum yield of Ce~(3+) emission in GGAG glass-ceramics is 29. 2%, meanwhile, the color coordinates and the correlated color temperature (CCT) of combined white light were proved to be x=0. 319, y=0. 349 and 6 086 K, respectively. Although the quantum yield is a little smaller than the value in Ce~(3+) -doped YAG glass-ceramics, the CCT of the combined white light is much smaller than that in the latter. The optical behavior of GGAG glass-ceramics provides new vision for developing comfortable LED lighting devices.