We experimentally demonstrate photocurrent generation from a titanium nitride thin film forming an interface to a zinc
oxide thin film by the illumination of visible light up to 800 nm in wavelength. The photocurrent is attributed to hot
electrons excited in titanium nitride whose excitation is not limited by the bandgap of zinc oxide. Our result paves the
way to use titanium nitride instead of metals for phototectors and solar photocatalysis.