Conductors, Semiconductors and Insulators
Mead, 1988
Each atom is
covalently
bonded to 4
猪图
neighbors
dominates becau it has a clean oxide interface:
黔东南旅游Grove, 1969
E g =1.2eV=50kT
Probability of occupation of a state
Energy relative to Fermi level in ()/p(occupied)f E E kT
e
艾瑟尔−−≈States below Fermi level are with Boltzman distribution
p(unoccupied)States at the Fermi level are ½An intrinsic miconductor (no dopants)
Band diagram Density of states Fermi-Dirac distribution Carrier concentrations
骨组词语禁毒宣传手抄报Donors and Acceptors in the periodic table A donor atom donates a free electron
Binding energy of electron is reduced from free atom binding energy (~0.5 eV) by silicon dielectric constant
kT eV eV
E binding Si 205.012圆满的近义词
5.0120≈≈≈
≈εεAt 300K, nearly all donor electrons are free –becau there are many more ways to be free than bound
An n-type miconductor
防溺水征文A p-type miconductor
Charge density
Electric field
that caus velocities
much less than the thermal velocity
Mobility is a function of electric field
diffu
Grove 1969
茴香菜怎么吃
