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NaTaO3/ZnO composites were synthesized via a two-step hydrothermal method.Then ultraviolet detectors based on pure NaTaO3,ZnO and their composites with different mole ratio were fabricated.Among all the devices,the 1∶1 Na-TaO3/ZnO possessed a high photo-to-dark current ratio and stable periodic photoresponse.The photoresponse is facil-itated by the synergistic effect between different components and the improved ZnO morphology in the composites,the reduced dimensionality in which provides a straight electron conduction pathway.Additionally,the 1∶1 Na-TaO3/ZnO detector also exhibits a low dark current less than 1 nA at 5 V bias,which benefits a lot to the low power dissipation and high sensitivity of devices.These results reveal that NaTaO3/ZnO composites are good candidates for the fabrication of ultraviolet detectors.