文档介绍：Prof. & Dr. Guohua Li(李果华)
Office:Room 305, Qian Building
E-mail:guohua_li55@
Cell:**********
Physics of Semiconductors
-An Introduction
Spring at Yale University
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Grading
Problem sets:
assigned Friday, due one week later
Grading:
10% attendance rate, 30% problem sets, 60% final exam
TA:李芳馨,due 6:30pm~8:00pm, Monday
Room 232, Qian Building
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T
R
semiconductor
metal
insulator
●Resistance-Temperature Coefficient
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●Band gap
Metals: Eg ~ 0 Eg (Cu) ~ 0 eV
Insulators: Eg 3 eV Eg (SiO2)= eV
Semiconductors: 0 Eg 3 eV Eg (Si) = eV
But
Diamond can be a semiconductor, its bandgap is~
GaN~
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Classification of Semiconductors
As of functions and applications
microelectronic
photoelectronic
thermoelectronic
microwave
∶
∶
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As positions
anic:elementary, compound
organic
As of structures
crystals:mono, poly
amorphous
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Ge
Se
Si
C
B
Te
P
Sb
As
Elementary
semiconductors
S
I
Sn
High melting point
Unstable
Low temperature
seldom
(1) Elementary crystals
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Compound
semiconductors
Ⅲ-Ⅴ
Ⅱ-Ⅵ
Metal-oxide
Ⅳ-Ⅵ
Ⅴ-Ⅵ
Ⅳ-Ⅳ
InP、GaP、GaAs、InSb、InAs
CdS、CdTe、CdSe、
ZnS
SiC
GeS、SnTe、GeSe、PbS、PbTe
AsSe3、AsTe3、AsS3、SbS3
CuO2、ZnO、SnO2
(2) Compound semiconductors
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★transition metal oxide semiconductors: ZnO、SnO2、V2O5、Cr2O3、Mn2O3、FeO、CoO、NiO
★ic semiconductors: CdCr2S4、CdCr2Se4、HgCr2S4
★rare-pounds: EuO、EuS、EuSe、EuTe
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Amorphous semiconductors
(1) Si, Ge, Te、Se
(2) GeTe, As2Te3, Se4Te, Se2As3, As2SeTe
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