Photoresponse of indium oxide particulate-based thin films fabricated using milled nanorods grown by the self-catalytic vapor-liquid-solid process

摘要

Indium oxide (In_2O_3) nanorods were grown on silica substrates by using the self-catalytic vapor-liquid-solid growth process. The photoresponse of the nanorods was compared to that of the thin film, tin-doped indium oxide (ITO). The nanorods demonstrated a wavelength-dependent photoresponse with high responsivity of 1.82 A W~(-1) at 405 nm. In contrast, the conductive ITO thin film did not show a photoresponse to light. Analysis results showed that different surface states of materials as well as doping in ITO contributed to the significant difference in the photoresponse of samples.