Abstarct: In this research the laxyers containing ZnO nanorods were deposited by chemical bath method, and the physical properties and light detection of the samples with mextal-substrate-mextal (MSM) configurations and photodiode (with silicon substrate) under ultraviolet radiation were investigated. In this study for the sample characterization we used various methods including field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), X-ray energy dispersive spectroscopy (EDX), Raman spectroscopy, and ultraviolet-visible optical spectroscopy (UV-Vis) (UV-Vis), photoluminescence spectroscopy (PL), Seebeck effect, also current-voltage (I-V) and current-time (I-t) measurements in dark and under light illumination. Through this research, different substrates, seeding and annealing conditions were used in order to achieve optimal physical conditions in the synthesized ZnO nanords. In section 4-1, seeding was done by the chemical bath deposition method on the glass substrate, and after determining the optimal number of seed coating times, in section 4-2, we investigated the effect of annealing time on the physical properties and photoconductivity of the ZnO laxyers. It was found that the annealed sample in a period of 1 hour (h) has the highest photocurrent to ultraviolet radiation, compared to other samples.In section 4-3, the seeding process of glass substrates were applied by sputtering of the Zn mextal laxyers in different periods of time while oxidized in O2 atmosphere, and then the physical properties and photoconductivity of the ZnO laxyer were determined We found that the sample seeded in 10 min (S10) has a shorter recovery time than other samples. In section 4-4, we studied the ultraviolet light sensing property in ZnO nanorod arrays doped by various elements (Co, Cu, N) with different concentrations of 0.5 and 0.1 mM. It was observed that the samples doped with 0.5 mM concentration, have a higher optical response than those with 1 mM concentration. Next, in sections 4-5 and 4-6, by replacing the p-Si substrate, we investigated the physical properties and light detection of pure and doped (Co, Cu, N) ZnO nanorods with a concentration of 0.5 mM in MSM and p-Si/n-ZnO junction configurations. It was found that the p-Si/n-ZnO junction samples have a higher optical response compare to those with MSM configuration