In the presence of impurities or in a nonstoichiometric solid, free electrons or electron holes are produced as a result of “charge compensation” to neutralize the effect of charged ionic defects 。
杂质存
的情况下,或

学计量比的固体中,为了中和带电离
缺陷所引起的电荷不平衡,便会产生自由电
或电
空穴。

「
文
种非常奇怪
然大教堂历时500年


