{"title":"Self-powered heterojunction ultraviolet photodetector based on NiO nanosheets/TiO2 nanorods","authors":"S. Shi, Rui Cao","doi":"10.1051/epjap/2022220217","DOIUrl":null,"url":null,"abstract":"NiO/TiO2 heterojunction devices were fabricated through growing NiO nanosheets by hydrothermal method on TiO2 NRs and their UV photoresponse properties were examined. The crystal structure, and optical properties of heterojunction is characterized by XRD, Raman spectrum, absorption and PL. The results of XPS valence band spectrum, M-S curves and EIS curves for NiO/TiO2 heterojunctions revealed that the separation and transfer of the photo-generated carriers occur in heterojunction interface. The heterojunction devices exhibit a large responsivity of 0.54 A/W and a high detection sensitivity of 6.0×1012 Jones under UV illumination with wavelength of 370 nm at zero bias.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The European Physical Journal Applied Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1051/epjap/2022220217","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
NiO/TiO2 heterojunction devices were fabricated through growing NiO nanosheets by hydrothermal method on TiO2 NRs and their UV photoresponse properties were examined. The crystal structure, and optical properties of heterojunction is characterized by XRD, Raman spectrum, absorption and PL. The results of XPS valence band spectrum, M-S curves and EIS curves for NiO/TiO2 heterojunctions revealed that the separation and transfer of the photo-generated carriers occur in heterojunction interface. The heterojunction devices exhibit a large responsivity of 0.54 A/W and a high detection sensitivity of 6.0×1012 Jones under UV illumination with wavelength of 370 nm at zero bias.
采用水热法制备了NiO/TiO2异质结器件，并对其紫外光响应性能进行了测试。利用XRD、拉曼光谱、吸收光谱和PL对异质结的晶体结构和光学性质进行了表征。对NiO/TiO2异质结的XPS价带谱、M-S曲线和EIS曲线进行了分析，结果表明，光生载流子在异质结界面发生了分离和转移。该异质结器件在零偏置波长为370 nm的紫外照射下具有0.54 a /W的高响应度和6.0×1012 Jones的高检测灵敏度。
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