新型远红外Ge–Ga–Te–CsCl硫系玻璃的光学特性（英文）  

Optical Characteristics of Novel Ge–Ga–Te–CsCl Far-infrared Chalcogenide Glasses

作　　者：程辞[1] 王训四[1] 徐铁峰[1] 祝清德 孙礼红 廖方兴 潘章豪 刘硕[1] 戴世勋[1] 沈祥[1] 

机构地区：[1]宁波大学高等技术研究院红外材料及器件实验室,浙江宁波315211

出　　处：《硅酸盐学报》2016年第1期136-141,共6页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(61435009,61177087,61377099);国家973计划(2012CB722703);国家科技部重大国际合作(2011DFA12040);浙江省教育厅科研基金(R1101263);宁波市自然科学基金(610118);宁波大学王宽诚幸福基金;宁波大学优秀学位论文培育基金(PY2014014)

摘　　要：利用传统的熔融-淬冷法制备了一系列新型的掺杂卤化物CsCl的Te基玻璃。通过差示扫描量热仪和Fourier红外光谱仪等测试了玻璃样品的热学及光学性能。结果表明,该玻璃具有良好的热学及光学性质。(Ge_(15)Ga_(10)Te_(75))_(80)(CsCl)_(20)玻璃样品的析晶温度T_x和转变温度T_g的差值△T最大,达到了118℃。随着CsCl含量的增加,玻璃的密度随之减小,但是吸收截止边先发生蓝移然后再向长波方向移动,其原因在于玻璃的结构及其均匀性的改变。此外,光学带隙的最大值仅为0.721 eV。通过提纯消除了Ge-Ga-Te-CsCl玻璃中杂质的影响,并且提纯后的玻璃在2-20μm波长范围内有着平坦的红外光学窗口。To develop new glass materials for bio-sensing and far infrared applications, a series of novel tellurium glasses doped with halide CsCl were prepared and investigated by traditional melt-quenching method. Thermal and optical parameters of glass samples were measured by differential scanning calorimetry （DSC） and Fourier transforming infrared spectroscopy （FTIR）, etc. Experiment results indicate these glasses have good thermal and optical properties. The highest value of AT （the difference between the glass onset crystallization temperature Tx and the glass transition temperature Tg） reaches up to 118 ~C corresponding to （GelsGa10Te75）8o（CsC1）20 glass composition. With the increase of CsC1, the density reduces gradually, but the absorption edge has a blue shift first and then shifts to a long-wavelength region. The reasons lie in the changes of glass structure and its homogeneity. In addition, the largest value of optical band gap is only 0.721 eV. With a purifying process, the affections of impurities in Ge-Ga-Te-CsC1 chalcogenide glasses can be eliminated effectively and the purified glasses have a flat infrared optical window between 2 and 20 um, which imply that these glasses are well candidate for the applications of far infrared optic imaging and sensing.

关 键 词：碲基玻璃 吸收截止边 光学带隙 远红外 

分 类 号：TQ171.1[化学工程—玻璃工业] TQ171.73[化学工程—硅酸盐工业]