The electronic transport properties of ternary Cd_(1-x)Zn_xS nanowire networks

摘要

We present the electronic transport characteristics of ternary alloy Cd_(1-x)Zn_xS nanowirenetworks in the dark and under white light illumination. Compared to the negligible darkcurrent, we observed a photocurrent enhancement of up to four orders of magnitude at anintensity of 460 mW cm~(-2). The time constant of the dynamic photoresponse is—5s. Thecurrent—voltage characteristics at different intensities show Ohmic behavior at low bias andspace charge limited conduction (SCLC) at higher bias voltages. The SCLC behavior and slowtime response indicate that the charge transport is dominated by tunneling at the percolatinginter-nanowire junctions.