Nipi multilayer

Fig. 9.32. (a) Time dependence of the conductivity of a nipi multilayer after a brief exposure to light, showing persistent photoconductivity (i) temperature dependence of the relaxation time, x, of the persistent photoconductivity (Kakalios and Fritzsche 1984). 

Fig. 9.33. Room temperature bias dependence of the conductance of a nipi multilayer after cooling from 200 C with the indicated bias voltage (Fritzsche et al. 1988).

---