Space-charge-limited currents and trapping in semi-insulating InP

The energy level and the density of the deep acceptor Fe
³⁺
trap involved in space-charge-limited current (SCLC) flowing in semi-insulating (SI) InP was deduced from
I-V
measurements and a model employing either the low-field Hall mobility or the high-field saturated electron velocity υ
s
. The modified model based on υ
s
yields the Fe
³⁺
energy level,
E_{t} = 0.6
eV, and the trap density
N_{t} = 3}
× 10
¹⁵
cm
³
, consistent with data obtained by other means.