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HiSIM-SOI - TechConnect World

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Modeling of Trap Density<br />

Grain Boundaries<br />

Poly-Si<br />

film<br />

Traps uniformly distributed<br />

in crystal Si<br />

Simplified Model for Density of States<br />

Log(Density of States)<br />

Tail States<br />

Donor-type<br />

Acceptor-type<br />

Log(Density of States)<br />

Donor-type<br />

⎛ EV<br />

− E<br />

g<br />

D<br />

E = gC1<br />

exp⎜<br />

⎝ Es<br />

( ) ⎟<br />

⎠<br />

⎞<br />

Acceptor-type<br />

⎛ E − EC<br />

⎞<br />

( E) = g exp ⎟<br />

⎠<br />

g<br />

A<br />

C1<br />

⎜<br />

⎝<br />

Es<br />

E V<br />

Deep States<br />

E C<br />

E V<br />

E C<br />

Add into the Poisson equation<br />

<strong>HiSIM</strong><br />

30

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