摘要
稀土离子掺杂微晶玻璃兼具晶体材料优异的光学特性和玻璃材料良好的物理化学特性,是一种极具发展前景的红外发光材料。本文从微晶玻璃的透过率出发,结合散射理论对其影响因素进行了简要分析,指出实现透明微晶玻璃的基本条件。分析归纳了目前稀土离子掺杂红外微晶玻璃的现状和特性,包括氟氧硅酸盐、碲酸盐和锗酸盐微晶玻璃体系。介绍了稀土离子掺杂红外微晶玻璃的应用研究进展,最后对其发展状况进行总结及展望,为稀土离子掺杂红外微晶玻璃的研究提供思路和参考。
The infrared wavelength of 1-5μm contains important communication and atmospheric transmission window,which has great application value.At present,the luminescent materials used in this band mainly include rare-earth ion-doped crystal and glass.Because of the large absorption and emission cross section and low phonon energy,crystal material is widely used in the field of solid state lasers.However,the long preparation cycle and limited sample size restrict its further development.Glass material possesses excellent machinability and good fluorescence characteristics,being widely used in communication,laser and other fields.Oxide glass is mainly used in near-infrared(NIR)range being limited by its large phonon energy.Rare-earth ion-doped fluoride glass can be used in visible and mid-infrared(MIR)range,but limited by its poor chemical and mechanical properties.Rare-earth ion-doped glass ceramics shows excellent optical properties from crystal materials,and good physical and chemical properties from glass materials,making it a promising infrared luminescent material.One of the most important properties of glass ceramic is the transmittance,as the crystalline phase in glass would cause light scattering inevitably.Based on the scattering theory,one could find that the influence factors of transmittance of glass ceramics include the size and distribution of the crystalline phase and the refractive index difference between the crystalline phase and the glass phase.To realize transparent glass ceramics,the size of the crystalline should be less than 30 nm,and the refractive index difference should be less than 0.3.The status and characteristics of rare-earth ion-doped infrared glass ceramics,including oxyfluoride silicate,tellurate and germanate glass ceramics,were summarized and analyzed.The application and research progress were overviewed.Oxyfluoride silicate glass ceramics is the most widely investigated material.Phase separation would generally happen,leading to the formation of fluorine-rich nanophase before the crystallization process,and would affect the crystalline phase properties,such as crystalline size.The improvement of fluorescence characteristic is summarized,including the aspects of fluorescence intensity,lifetime and bandwidth.Anti-glass phase can be precipitated in tellurate glass ceramics,which is difficult to realize in other glass or preparation alone,giving the material system unique properties.The influence of crystalline phase in tellurate glass ceramics is carefully discussed.Infrared germanate glass ceramics is reported in few glass composition systems,and their properties are introduced.With the greatly improved fluorescence properties,glass ceramic could be used in the fields of infrared fiber laser,infrared whispering gallery modes(WGM)resonator microcavity laser,temperature sensing and luminous anti-counterfeiting and so on,the application cases reported so far are summarized and introduced.Summary and prospects Glass-ceramics shows excellent optical properties from crystals,and good physical and chemical properties from glass materials,facilitating its important application in infrared wavelength range.Based on the scattering theory,the factors affecting the transmittance of glass ceramics are introduced,and the conditions for realizing transparent glass ceramics are summarized.The most widely reported glass ceramics systems,including oxyfluoride silicate,tellurate and germanate glass ceramics,are introduced.The crystallization mechanism is analyzed,but remains unclear,for example,how to understand the precipitation of anti-glass phase in tellurate glass ceramics.A variety of low phonon energy fluoride or oxide crystalline phases can be precipitated in germanate glass ceramics.However,the infrared germanate glass ceramics is limited to a few systems,and there is plenty of room for exploration of infrared germanate glass ceramics luminous materials.Finally,the application of infrared glass ceramics is introduced,especially in the field of laser.Under the condition of balancing the scattering loss caused by the crystalline phases,glass ceramics shows better laser performance than the precursor glass,which indicates that glass ceramics luminous materials have great application prospects in the field of infrared laser.However,there is few reports on other applications of rare-earth ion-doped glass ceramics in the infrared range at present.It’s expected that the development of relative applications based on unique properties of glass ceramics will promote rare-earth ion-doped glass ceramics to become the next generation infrared luminous materials.
作者
叶昇达
陈健濠
黄雄健
董国平
YE Shengda;CHEN Jianhao;HUANG Xiongjian;DONG Guoping(School of Materials Science and Engineering,State Key Laboratory of Luminescent Materials and Devices,South China University of Technology,Guangzhou 510641,China;School of Physics,South China University of Technology,Guangzhou 510641,China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2024年第8期2527-2542,共16页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金优秀青年科学基金(62122027)
国家自然科学基金(62075063)。
关键词
微晶玻璃
红外
氟氧硅酸盐
碲酸盐
锗酸盐
glass ceramic
infrared
oxyfluoride silicate
tellurate
germanate
作者简介
第一作者:叶昇达(1998-),男,博士研究生,E-mail:yeshengda1@163.com;通信作者:董国平(1983-),男,博士,教授,E-mail:dgp@scut.edu.cn。
