valence band

基本解释

This paper gives a simplified calculation of the valence band structure for a diamond-type crystal in nearest neighbor approximation.
用最近邻近似法对金刚石型晶体的价带给出了一种简化的计算法。
The valence-band offsets of such systems are calculated by frozen potential method and their Joint density of states has been computed by tetrahedron method.
在此基础上，用冻结势方法计算了该超晶格系统的价带带阶；用四面体方法计算了该系统的联合态密度。
A theoretical method for determining the valence-band offset (VBO) at strained alloy type heterojunctions is presented by combining the cluster expansion method and average-bond-energy method.
把原子集团展开方法同平均键能方法相结合，建立了一种研究合金型应变层异质界面价带偏移的方法。

价带
When sub-picosecond ultra-short laser pulses irradiated on materials, electrons can be excitated from valence band to conductive band by the incident laser pulse, and the electron density can reach vary high level （10211022/cm3）.
而在第六章中,基于对前一章内容的总结,并在深入查阅大量相关文献的基础上,对各类半导体材料的激光损伤机制及其过程等有了更深一步的认识:当亚皮秒超短脉冲激光与材料相互作用时,入射激光可以将材料价带中的电子激发到导带上去,并可以使激发出的电子具有非常高的密度（10211022/cm3）和温度（>=1000K）。
共价带