蓝色氧化钨的光电子能谱研究  

PHOTOEMISSION STUDIES ON THE BLUE TUNGSTEN OXIDES

作　　者：谢侃[1] 齐上雪 伍乃娟 林彰达[1] 

机构地区：[1]中国科学院物理研究所,北京100080

出　　处：《物理学报》1990年第5期809-813,共5页Acta Physica Sinica

摘　　要：本文用光电子能潜技术对蓝色氧化钨的表面价态进行了一系列研究。结果表明:蓝色氧化钨并不是单一价态的氧化钨,而是由W^(+5)和W^(+6)两种价态组成。氩离子刻蚀,真空高温处理都是一个失氧还原过程,也是钨由高价态向低价态的转变过程。同时,费密能级附近的态密度随着价态变低而逐渐增加。A series of studies were conducted for surface valency in blue tungsten oxides by using pho-toemission technique. Rusults show that, the blue tungsten oxide contains not only one kind of valency, but conbination of two valences, namely the conbination of W+5 and W+6, and also the process of argon ion eching and high temperature treatment all induce the loss of oxygen in W-chemical reduction process, which causes W transfer from high valence to low valence. Meanwhile, the density of state near Fermi level increases with the change from high valence to low valence.

关 键 词：氧化钨 光电子能谱 价态 蓝色 

分 类 号：O614.613[理学—无机化学]