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

The energy level and the density of the deep acceptor Fe3+trap involved in space-charge-limited current (SCLC) flowing in semi-insulating (SI) InP was deduced fromI-Vmeasurements and a model employing either the low-field Hall mobility or the high-field saturated electron velocity υs. The modified model based on υsyields the Fe3+energy level,Eₜ = 0.6eV, and the trap densityNₜ = 3}× 1015cm3, consistent with data obtained by other means.