96初等考電子學大意 - 考試
By Poppy
at 2013-04-03T00:57
at 2013-04-03T00:57
Table of Contents
在一受體(acceptor)雜質不均勻分布之p型半導體中,何處具有較高的電位?
(A)雜質濃度較高處
(B)雜質濃度較低處
(C)在半導體表面處
(D)係同電位,各處之電位相同
答案:B
不懂的地方是:在P型半導體中雜質電洞較多,故濃度高往濃度低形成擴散電流
那為何不是(A)雜質濃度較高處為電位高者呢?
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