CAJ | 학술논문

高硅氧发光玻璃因具有较好的热稳定性、化学稳定性等优点，成为极具潜力的荧光材料。针对其仍存在发光强度较弱的问题，从与发光性质紧密相关的制备工艺出发，分析各关键工艺参数对高硅氧玻璃发光性质的影响具有重要的意义。本文制备了关键工艺参数不同的Eu2＋/Dy3＋共掺高硅氧发光玻璃，通过测试微孔表面结构参数、发射光谱和红外吸收光谱等，研究了分相温度、溶液离子浓度和烧结温度等制备关键工艺参数对高硅氧发光玻璃光致发光性质的影响。当分相温度不同时，多孔玻璃微孔表面结构参数和高硅氧玻璃的发射光谱表明，分相温度通过影响多孔玻璃的比表面积间接的影响高硅氧玻璃的发光性质，多孔玻璃比表面积数值越大，高硅氧玻璃发光强度越大。当溶液离子浓度不同时，高硅氧玻璃的发射光谱表明，当溶液中Dy3＋浓度增加，高硅氧玻璃中Dy3＋和 Eu2＋发光增强；当Dy3＋浓度大于0.1 mol · L -1时，由于Dy3＋的发光出现浓度猝灭效应，高硅氧玻璃整体发光强度减弱。当烧结温度不同时，高硅氧玻璃的发射光谱和红外吸收光谱表明，随着烧结温度升高，高硅氧玻璃中-OH残留量减少，发光强度增强；当烧结温度大于1000℃时，高硅氧玻璃出现析晶，发光强度减弱。
고규양발광파리인구유교호적열은정성、화학은정성등우점，성위겁구잠력적형광재료。침대기잉존재발광강도교약적문제，종여발광성질긴밀상관적제비공예출발，분석각관건공예삼수대고규양파리발광성질적영향구유중요적의의。본문제비료관건공예삼수불동적Eu2＋/Dy3＋공참고규양발광파리，통과측시미공표면결구삼수、발사광보화홍외흡수광보등，연구료분상온도、용액리자농도화소결온도등제비관건공예삼수대고규양발광파리광치발광성질적영향。당분상온도불동시，다공파리미공표면결구삼수화고규양파리적발사광보표명，분상온도통과영향다공파리적비표면적간접적영향고규양파리적발광성질，다공파리비표면적수치월대，고규양파리발광강도월대。당용액리자농도불동시，고규양파리적발사광보표명，당용액중Dy3＋농도증가，고규양파리중Dy3＋화 Eu2＋발광증강；당Dy3＋농도대우0.1 mol · L -1시，유우Dy3＋적발광출현농도졸멸효응，고규양파리정체발광강도감약。당소결온도불동시，고규양파리적발사광보화홍외흡수광보표명，수착소결온도승고，고규양파리중-OH잔류량감소，발광강도증강；당소결온도대우1000℃시，고규양파리출현석정，발광강도감약。
In the present work ,Eu2+ /Dy3+ co-doped high silica glasses with different process parameters were prepared and the effect of critical process parameters including phase separation temperature ,solution concentration and sintering temperature on the luminescence properties of Eu2+ /Dy3+ co-doped high silica glasses was investigated by means of measuring pore surface parameters of porous glasses ,emission spectra ,infrared absorption spectra and densities of high silica glasses .Pore structure parameters of porous glass samples and emission spectra of corresponding high silica glass samples with different phase separa-tion temperatures show that the phase separation temperature has indirect effect on luminescence properties of high silica glass by influencing specific surface area value of corresponding porous glass .Specific surface area of porous glass changes when phase separation temperature changes .High silica glass achieves maximum emission intensity when the maximum specific surface area of porous glass is obtained .Luminescence intensity of high silica glass increases when specific surface area of porous glass increa-ses .Emission spectra of high silica glass samples with different solution concentrations show that the emission intensities of Eu2+ and Dy3+ in high silica glass are enhanced with the increase in the Dy3+ concentration in solution ;when the Dy3+ concentra-tion is beyond 0.1 mol · L -1 ,the emission intensities of Eu2+ and Dy3+ in high silica glass are both decreased due to the occur-ring of concentration quench of Dy3+ in the glass .Emission spectra and infrared absorption spectra of high silica glass samples with different sintering temperatures show that the emission intensity of high silica glass is increased with the increase in the sin-tering temperature because the content of residual hydroxyl groups -OH in the glass is decreased ;when the sintering tempera-ture is beyond 1 000 ℃ ,the high silica glass exhibits crystalline and the luminescence intensity decreases .