In the band structure, one band that is completely filled with electrons is termed valence band. 在能带结构中,完全填满电子的带被称为价带(VB)。
The reason is that their valence band is full of electrons, which obstructs current flow. 因为它们的价带(VB)填满了电子,使电流无法流动。
It is found that in a high electric field electrons can transit from the valence band to the conduction band, which is demonstrated to be Zener tunneling in organic semiconductors. 发现在足够高的电场下,价带(VB)中的电子可以穿过带隙进入导带,即有机聚合物中的齐纳隧穿现象。
The highest-energy band containing electrons is called the valence band, and the next higher one is the conduction band. 填有电子而能量最高的能带称为价带(VB),相邻的更高能带称为导带。
The upshift of valence band edge and the downshift of conduction band edge under tensile strain are responsible for that. 这是因为外加伸展应力使得矽的价电带往上移动以及导电带向下移动造成。