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High Performance Ultraviolet Photodetector Fabricated with ZnO Nanoparticles-graphene Hybrid Structures (cited: 5)
Jin-yang Liu1, Xin-xin Yu*2, Guang-hui Zhang1, Yu-kun Wu1, Kun Zhang3, Nan Pan3, Xiao-ping Wang1,3
1.Department of Physics, University of Science and Technology of China, Hefei 230026, China;2.School of Physics and Materials Science, Anhui University, Hefei 230039, China;3.Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Tech-nology of China, Hefei 230026, China
Abstract:
Ultraviolet (UV) photodetector constructed by ZnO material has attracted intense research and commercial interest. However, its photoresistivity and photoresonse are still unsatisfied. Herein, we report a novel method to assemble ZnO nanoparticles (NPs) onto the reduced graphite oxide (RGO) sheet by simple hydrothermal process without any surfactant. It is found that the high-quality crystallized ZnO NPs with the average diameter of 5 nm are well dispersed on the RGO surface, and the density of ZnO NPs can be readily controlled by the concentration of the precursor. The photodetector fabricated with this ZnO NPs-RGO hybrid structure demonstrates an excellent photoresponse for the UV irradiation. The results make this hybrid especially suitable as a novel material for the design and fabrication of high performance UV photodector.
Key words:  ZnO nanoparticle, Reduced graphite oxide, Hybrid structure, UV photodector
FundProject:
基于氧化锌纳米颗粒-石墨烯异质结构的高性能紫外光探测器 (cited: 5)
刘金养1, 于欣欣*2, 张光辉1, 吴昱昆1, 张琨3, 潘楠3, 王晓平1,3
1.中国科学技术大学物理系,合肥230026;2.安徽大学物理与材料科学学院,合肥230039;3.中国科学技术大学合肥微尺度物质科学国家实验室(筹),合肥230026
摘要:
报道了一种基于水热反应制备无表面活性剂的氧化锌纳米颗粒-还原石墨烯异质结构的新方法. 研究表明异质结构中氧化锌纳米晶体颗粒的平均直径为5 nm,这些颗粒均匀分布在还原石墨烯表面,其密度可以通过反应物的浓度进行有效调节. 并进一步构建了基于这种异质结构的光电探测器. 该探测器对紫外光的响应很快,光电流响应变化可达四个量级. 这些结果表明该异质结构特别适合作为替代材料用于设计和构建高性能的紫外光探测器件.
关键词:  氧化锌纳米颗粒,还原石墨烯,异质结构,紫外光探测器
DOI:10.1063/1674-0068/26/02/225-230
分类号: