【作者】 应磊； 聂秋华； 陈飞飞； 林常规； 戴世勋； 徐铁峰；

【Author】 Ying Lei~1 Nie Qiuhua~(1,*) Chen Feifei Lin Changgui~2 Dai Shixun~1 Xu Tiefeng~1 (1 College of Information Science and Engineering,Ningbo University,Ningbo 315211,Zhejiang,China) (2 The Faculty of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211, Zhengjiang,China)

【机构】 宁波大学信息科学与工程学院； 宁波大学材料科学与化学工程学院；

【摘要】 采用熔融淬冷法并结合适当的热处理工艺制备出了系列掺Ho³⁺的GeS₂-In₂S₃-Sb₂S₃硫系微晶玻璃。测试了基质玻璃和微晶玻璃样品的密度、显微硬度、X射线衍射谱、红外光谱及在800nm激光泵浦下的荧光光谱。结果表明:随着热处理时间的增加,样品的显微硬度明显地增加并且在高倍率的显微镜下观察玻璃的裂纹传播特性得到明显的改善;X射线衍射实验表明在一定温度下热处理析出的晶相是Sb₂S₃与In₂S₃,晶粒的尺寸限制在100nm以内,并且其近红外透过谱的紫外截止边随着热处理时间的增加而逐渐向长波长方向移动,但是其中远红外波长范围内却基本保持较高的透过特性;在800nm激光的泵浦下Ho³⁺的2.0μm和2.9μm的中红外荧光强度都有所增加,但增加幅度并不明显。在一定的热处理条件下,Ho³⁺离子会吸附在析出的In₂S₃与Sb₂S₃附近,从而局部稀土离子浓度增加而增强了荧光的强度,但由于Ho³⁺离子的局部配位环境并没有发生显著的变化所以荧光强度增加却并不明显。更多还原

【Abstract】 Ho³⁺-doped chalcogenide glass-ceramics in Ge-In-Sb-S system were prepared by appropriate heat treatment.The properties including density,microhardness,X-ray diffraction,infrared transmittance and fluorescence in the near-and mid-infrared region under 800nm excitation were investigated.The results show that the mechanical strength which is relatively weak in host glass improved significantly in the glass ceramic samples,and the ultraviolet absorption edge shift towards long wavelength as function of annealing time while the mid-far infrared transmission retain unchanged.The crystalline phases in the obtained glass-ceramics are mixture of Sb₂S₃ and In₂S₃ with the grain sizes about 100 nm,and the emissions of 2.0μm and 2.9μm for Ho³⁺in glass samples slightly enhanced.更多还原