OTF2

A.2 OTF2

Starting again with (A.1), but this time without simplifications, the total differential delivers

g = ∂ID,lin-= − ∂ID,lin = − ---------−-βVD----------. m ∂VG ∂Vθ (1+ θ(VG − Vθ − 1∕2VD ))2

(A.5)

Linking (A.1) and (A.5) results in

ID,lin gm = (1+ θ(VG − Vθ − 1∕2VD))(VG − Vθ − 1∕2VD)

(A.6)

which is needed for the mobility variation. Differentiating this expression with respect to $Vθ$ describes $ΔV θ$ as a function of the measured change in $ID,lin∕gm$ not depending on $β$ [6].

∂(ID,lin) ---gm---= − 1− 2θ(VG − V θ − 1∕2VD ) ∂Vθ

(A.7)

OTF,2 − Δ(IDg,lin) ΔV θ ≈ -------------m--------- 1 + 2θ(VG − Vθ − 1∕2VD)

(A.8)

In contrast to OTF1, OTF2 requires a complete $ID(VG)$ -characteristics for the extraction of $θ$ .

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