大学MOOC Solid State Electronic Devices(Southeast University)1458229163 最新慕课完整章节测试答案

Self quiz

1、单选题：
‌In a MESFET, a Schottky barrier needs to be formed between the gate (metal) and the channel (n-type semiconductor).  Therefore, we have to choose the metal and the semiconductor so that ‏
选项：
A: qΦm>qΦs
B: qΦm<qΦs
C: qΦm=qΦs
D: other
答案: 【