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The first Transistor

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熱 平 衡 狀 態 下 BJT 之 能 帶 圖<br />

[R. F. Robert, Semiconductor Device Fundamentals, Addison Wesely, 1996]<br />

32<br />

順 向 作 用 區 工 作 電 晶 體 之 能 帶 圖<br />

結 構 示 意 圖<br />

+ −<br />

E<br />

+<br />

X E<br />

p<br />

X B<br />

n<br />

X C<br />

p<br />

I C<br />

−<br />

C<br />

能 帶 圖<br />

I E<br />

V EB<br />

電 荷 分 佈 圖<br />

V EC<br />

I B<br />

− +<br />

B<br />

V BC<br />

qV<br />

E CB qV c CE<br />

qV EB<br />

E v<br />

qN ( D − NA)<br />

N B<br />

x n<br />

− x p<br />

0 W B<br />

x<br />

N C<br />

N E<br />

33<br />

16

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