【简答题】300K 时某半导体导带底有效态密度1×10 19 cm -3 ,价带顶有效态密度5.6×10 19 cm -3 ,禁带宽度0.67eV(300K),0.76eV(77K): 计算电子和空穴状态密度有效质量。 计算77K时的本征载流子浓度及本征半导体费米能级位置。 在该半导体中掺入施主杂 质 1.3×10 18 cm -3 ,E C -E D =0.05eV,计算77K时的费米能级位置以及导带电子...
【单选题】Most interpreters agree that their really unsettling moments come when the speaker makes a joke involving an untranslatable-play on words. 'There is hardly anything people are more sensitive about tha...