【摘要】 本研究采用溶液燃烧法制备NiO纳米晶材料,采用水热法制备ZnO单晶纳米线,并采用提拉法将ZnO和NiO两者复合,制备出结构简单、重复性良好的NiO/ZnO异质结结构的紫外探测器。光电流测试表明其对365nm紫外光的探测灵敏度在0.9V时达到13.3。光致发光测试表明,NiO/ZnO异质结中缺陷的减少和载流子复合的抑制是其良好性能的主要原因。结果表明,燃烧法是一种有前途的制备NiO纳米晶的方法,并可用于制备性能良好的光电器件。更多还原

【Abstract】 Both ZnO and NiO materials are potential wide band gap semiconductors for ultraviolet(UV)photodetectors because they are abundant in resources,environmental-friendly,and physically stable.Until now only a few works on UV photodetectors based on combination of ZnO and NiO have been reported,with most of them prepared by complex and costly methods.In this regard,we proposed a simple method for the fabrication of NiO/ZnO heterojunction UV photodetector.Solution combustion method was used to prepare NiO nanomaterials onto hydrothermally grown single crystalline ZnO nanowires to form NiO/ZnO heterojunction.UV photodetector with such a simple structure showed repeatable and favorable detection sensitivity of 13.3 at 0.9 V to the 365 nm UV light.Suppression of deep level defects and carrier recombination in ZnO was suggested as the main cause for the good sensitivity according to photoluminescence results.Our results reveal that the combustion method is promising for the preparation of NiO nanomaterials for optoelectronic devices with reasonable performance.更多还原