CAJ | 학술논문

以柠檬酸为燃烧剂，掺杂摩尔分数为2%的 Ho3+，采用低温燃烧法制备 Ho∶ YbGG 多晶粉体。通过对样品的 X 射线衍射和扫描电镜分析，确定最佳煅烧温度为900℃。样品的吸收光谱在536 nm 和645 nm 处出现较强吸收峰，分别对应 Ho3+的5 I8→5 F4(5 S2)和5 I8→5 F5能级跃迁；在940 nm 和982 nm 处出现强吸收谱带，对应于 Yb3+的2 F7/2→2 F5/2能级跃迁。样品的荧光光谱在1989 nm 处有强发射谱带，对应于 Ho3+的5 I7→5 I8能级跃迁。样品可以发出较强的上转换绿光和红光，分别对应于 Ho3+的5 F4(5 S2)→5 I8和5 F5→5 I8能级跃迁。对相应的上转换机制也进行了分析。
이저몽산위연소제，참잡마이분수위2%적 Ho3+，채용저온연소법제비 Ho∶ YbGG 다정분체。통과대양품적 X 사선연사화소묘전경분석，학정최가단소온도위900℃。양품적흡수광보재536 nm 화645 nm 처출현교강흡수봉，분별대응 Ho3+적5 I8→5 F4(5 S2)화5 I8→5 F5능급약천；재940 nm 화982 nm 처출현강흡수보대，대응우 Yb3+적2 F7/2→2 F5/2능급약천。양품적형광광보재1989 nm 처유강발사보대，대응우 Ho3+적5 I7→5 I8능급약천。양품가이발출교강적상전환록광화홍광，분별대응우 Ho3+적5 F4(5 S2)→5 I8화5 F5→5 I8능급약천。대상응적상전환궤제야진행료분석。
Holmium doped ytterbium gallium garnet ( Ho∶ YbGG) polycrystal powder was synthe-sized by low temperature combustion method using citric acid as combustion agent. The mole fraction of Ho3 + was 2% . The Ho∶ YbGG polycrystal powder was determined by X-ray diffraction analysis and SEM analysis. The results show that 900 ℃ is the optimum calcination temperature. The ab-sorption spectrum of the sample shows that the absorption peaks of Ho3 + are centered at 536 nm and 645 nm, corresponding to 5 I8 →5 F4 ( 5 S2 ) and 5 I8 →5 F5 level transitions, respectively. The strong absorption bands of Ho3 + are centered at 940 nm and 982 nm, corresponding to 2 F5 / 2 →2 F7 / 2 level transition. The fluorescence spectra of the samples show that the strong emission band of Ho3 + is centered at 1 989 nm, corresponding to 5 I7→5 I8 level transition. The upconversion spectrum of the sample was tested and the corresponding conversion mechanism was analyzed. Ho∶ YbGG can emit strong green and red light under 980 nm LD excitation, which are corresponding to 5 F4 ( 5 S2 )→5 I8 and 5 F5→5 I8 level transitions of Ho3 + .