UV detecting properties of hydrothermal synthesized ZnO nanorods

► ZnO nanorods were grown on ZnO-coated glass substrates via a wet-chemical route at low temperature of 70 °C. ► The nanorods were about 1 μm in length and lower than 100 nm in diameter. ► The changes in photoresponse of the ZnO nanorods were investigated under different powers of UV illumination.