过渡金属Cr掺杂对金红石光性影响的研究  

Influence of Transition-Metal Cr Doping on Optical Properties of Rutile Single Crystal

作　　者：卢铁城[1] 刘彦章[1] 林理彬[1] 祖小涛[1] 朱居木[2] 吴丽萍[1] 

机构地区：[1]四川大学物理系和辐射物理及技术教育部重点实验室 [2]四川大学材料系,成都610064

出　　处：《无机材料学报》2001年第2期373-376,共4页Journal of Inorganic Materials

基　　金：国家自然科学基金资助项目!(19805005)

摘　　要：报道了采用高温扩散掺杂敏化法在金红石晶体表面掺入Ｃｒ离子、有效提高可见光响应的研究结果．分别利用ＵＶ－ＶＩＳ、ＸＦＡ、ＸＲＤ和ＬＲＳ等测试手段对样品进行了分析．结果表明Ｃｒ离子掺入晶体表面后以Ｃｒ２Ｏ３的形式与基体ＴｉＯ２形成固溶体Ｃｒ２ＴｉＯ５，提高了可见波段的光吸收，使原来位于４１０ｎｍ的ＴｉＯ２的吸收边移到了７５０ｎｍ处，实现了与太阳光谱的匹配．The visible-light absorption of rutile was raised through doping Cr ion into the surface of rutile crystal with high-temperature-diffusion-doping-sensitization technique. TiO2:Cr specimen was analyzed by means of UV-VIS, XFA, XRD, XPS and LRS, respectively. As a result, it is shown that after Cr ion is doped into the surface of the crystal, Cr ion exists in the solid-melting-state Cr2TiO5, which induces the original absorption edge(410nm) move to 750nm, and achieves match with solar spectrum and raises optical absorption to visible-light effectively.

关 键 词：高温扩散掺杂敏化 二氧化钛 金红石 表面锶掺杂 可见光响应 光学性质 

分 类 号：O614.411[理学—无机化学] O433[理学—化学]