- -

) *.)

* * Pauli

R= => (R) : Minimum (Split)

2

e-ep-p

: RLC

.

- H2 - : Schrdinger

. .. Li () split N (2e) => 0 e

Si: 14 e:3s 3p 4

: : Fermi

: :

() (k) gEg=1,43 eVEg=1,12 eV : :

* - e ( ): : (k)=E(-k) Brillouin J=0

m : e e

1 Brillouin: -/

: Schrdinger: Bloch: : Bloch: ( = )

: : : L=N : : :: :n=0,1N-1

: : BlochR: Bravais .. Schrdinger

:::

:Bloch : Schrdinger:

: n=mn=m1 :

(k):)

: ) s 1 : (k) S 1 1 Brillouin

(k)

Fig 4.20From Principles of Electronic Materials and Devices, Third Edition, S.O. Kasap ( McGraw-Hill, 2005) Si

From Principles of Electronic Materials and Devices, Third Edition, S.O. Kasap ( McGraw-Hill, 2005)

Fermi-Dirac EF Fermif(E) = E given

fermi-Dirac f(E,) .

g(E) = .g(E) dE () E (E + dE)

ME (a) EF >0K,.(b) g(E) .(c) E f (E).(d) g(E) f (E) e . = e