台GG面試題目值得深思的小問題 - 面試

By Bethany
at 2016-06-14T18:14
at 2016-06-14T18:14
Table of Contents
各位大大好
我今天在台積電面試的題目,看起來很簡單,但是滿值得思考的問題。
-----------------面試題目-------------------
假設電路上只有一個電壓源以及PN二極體
在二極體外加正偏電壓3V(或更大電壓) 除了不考慮材料的電流耐壓以及器件崩潰
盡可能考慮所有產生的因素 如:high level injection、PN結電阻Rp Rn的話
1)能帶圖該怎麼畫?
2)此時的的空乏區內建電壓會被抵銷嗎?空乏區會消失嗎?
3)延伸第二題 假設內建電壓0.7V不會被完全抵消 那麼施加的順向偏壓
所剩的2.3V會在哪被消耗掉?
--
我今天在台積電面試的題目,看起來很簡單,但是滿值得思考的問題。
-----------------面試題目-------------------
假設電路上只有一個電壓源以及PN二極體
在二極體外加正偏電壓3V(或更大電壓) 除了不考慮材料的電流耐壓以及器件崩潰
盡可能考慮所有產生的因素 如:high level injection、PN結電阻Rp Rn的話
1)能帶圖該怎麼畫?
2)此時的的空乏區內建電壓會被抵銷嗎?空乏區會消失嗎?
3)延伸第二題 假設內建電壓0.7V不會被完全抵消 那麼施加的順向偏壓
所剩的2.3V會在哪被消耗掉?
--
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