金属热电子发射和光电效应逸出功微观机制的区别  

Work Function Differences Between Thermo-electronic Emission and Photoelectric Effects

作　　者：陈舒[1] 

机构地区：[1]襄阳职业技术学院汽车工程学院,湖北襄阳441000

出　　处：《科技视界》2012年第19期194-194,152,共2页Science & Technology Vision

摘　　要：分析了金属热电子发射和光电效应两个物理现象中参与电子的微观机制的区别,提出光电效应中逸出功的表达式,对同一种金属而言,其光电效应光电子逸出功总大于热电子发射对应的逸出功。The related electrons are different in thermo-electronic emission and photoelectric effects. Metal free-electrons are available to the emission current in thermo-electronic emission while bound-electons are actual electons absorbing photons. A new formula describing the work function in photoelectric effects is discussed, which gives a good explanation to the facts that temperature is not related to the work function.

关 键 词：金属表面势垒 费米分布 费米能 逸出功 

分 类 号：TN104.1[电子电信—物理电子学]