PbSe量子点掺杂玻璃的制备及表征  

ASynthesis and characterization of PbSe quantum dot doped glass

作　　者：江慧绿[1] 程成[1] 马德伟[1] 

机构地区：[1]浙江工业大学激光与光电子技术研究所,浙江杭州310023

出　　处：《光电子．激光》2011年第6期872-875,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60777023);浙江省自然科学基金资助项目(Z407371)

摘　　要：采用高温熔融法,经过两步热处理,成功制备了PbSe量子点（QD）掺杂的硅酸盐玻璃。当热处理温度为550℃、热处理时间为1-10 h时,X射线衍射（XRD）和透射电镜（TEM）测量表明,玻璃中,生成的PbSe QD平均尺寸为5-6 nm。随着热处理时间的延长（3-8 h）,玻璃中生成的PbSe QD尺寸增大。近红外荧光（PL）光谱测量发现,在1 064 nm激光照射下,这种QD掺杂的玻璃有强荧光辐射、半高全宽（FWHM）达300-550 nm和辐射峰位于1546-1644 nm区域等特点。制备得到的PbSe QD玻璃可直接拉制成光纤,成为超宽带、高增益和易与目前通用的SiO2光纤对接的新型光纤材料。The PbSe quantum dot（QD） doped glass is fabricated successfully by using melting method and two-step heat treatment.The X-ray diffractometer and transmission electron microscopy measurements indicate that the average size of PbSe QDs in the glass reaches 5-6 nm with the heat temperature of 550 ℃ when the heat treatment time is about 1-10 h.The size of QDs generated in the glass increases with τ during 3-8 h.Near-infrared photoluminescence（PL） spectra show that the QD doped glass has enhanced PL emission,widened FWHM（300-550 nm）,and the PL peak wavelength in 1 5461 644 nm under irradiation of 1064-nm laser.Characterized with a broad band and high optical gain,the obtained PbSe QD doped glass can be drawn into the fiber that is conveniently jointed with the conventional fibers.

关 键 词：光纤材料 PbSe量子点(QD)玻璃 熔融法 荧光发射(PL)谱 

分 类 号：TN213[电子电信—物理电子学]