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dc.contributor.authorChen, Zhaolai
dc.contributor.authorLi, Chenglong
dc.contributor.authorZhumekenov, Ayan A.
dc.contributor.authorZheng, Xiaopeng
dc.contributor.authorYang, Chen
dc.contributor.authorYang, Haoze
dc.contributor.authorHe, Yao
dc.contributor.authorTuredi, Bekir
dc.contributor.authorMohammed, Omar F.
dc.contributor.authorShen, Liang
dc.contributor.authorBakr, Osman
dc.date.accessioned2019-07-30T12:32:58Z
dc.date.available2019-07-30T12:32:58Z
dc.date.issued2019-06-27
dc.identifier.citationChen, Z., Li, C., Zhumekenov, A. A., Zheng, X., Yang, C., Yang, H., … Bakr, O. M. (2019). Solution-Processed Visible-Blind Ultraviolet Photodetectors with Nanosecond Response Time and High Detectivity. Advanced Optical Materials, 7(19), 1900506. doi:10.1002/adom.201900506
dc.identifier.doi10.1002/adom.201900506
dc.identifier.urihttp://hdl.handle.net/10754/656241
dc.description.abstractUltrafast, high-sensitivity, visible-blind ultraviolet (UV) photodetectors are crucial for practical applications, including: optical communication, environmental ozone hole monitoring, and combustion and chemical detection. However, commercial visible-blind UV photodetectors based on traditional inorganic semiconductor materials involve expensive production processes, while the currently solution-processed detectors still suffer from issues of low sensitivity or slow response speed. Herein, high-performance visible-blind UV photodetectors with simultaneously ultrafast response speed and high detectivity are achieved from solution-processed micrometer-thick methylammonium lead trichloride perovskite thin single crystals, grown in high quality with smooth surfaces by judiciously designing the substrate's wettability. The as-fabricated UV photodetectors exhibit a low noise of 6.5 fA Hz−1/2, a low detection limit of 8.5 pW cm−2, and high specific detectivity of ≈6 × 1012 Jones. A fast response time of 15 ns and a large bandwidth of 25 MHz are obtained when decreasing the crystal thickness to 1 µm. The nanosecond response speed is several orders of magnitude faster than the best ever reported solution-processed visible-blind UV photodetectors and is comparable to reported UV photodetectors based on traditional (high-temperature processed) inorganic semiconductors. The high performance combined with low-cost fabrication makes these visible-blind UV photodetectors highly attractive for applications in optical communication and ultrafast detection.
dc.publisherWiley
dc.relation.urlhttp://doi.wiley.com/10.1002/adom.201900506
dc.rightsArchived with thanks to Advanced Optical Materials
dc.subjectnanosecond response
dc.subjectperovskite photodetectors
dc.subjectperovskite single crystals
dc.subjectultraviolet photodetectors
dc.subjectvisible-blind detectors
dc.titleSolution-Processed Visible-Blind Ultraviolet Photodetectors with Nanosecond Response Time and High Detectivity
dc.typeArticle
dc.contributor.departmentChemical Science
dc.contributor.departmentChemical Science Program
dc.contributor.departmentFunctional Nanomaterials Lab (FuNL)
dc.contributor.departmentKAUST Catalysis Center
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentKAUST Solar Center
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Characterization
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentUltrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
dc.identifier.journalAdvanced Optical Materials
dc.rights.embargodate2020-01-01
dc.eprint.versionPost-print
dc.contributor.institutionState Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
kaust.personChen, Zhaolai
kaust.personZhumekenov, Ayan A.
kaust.personZheng, Xiaopeng
kaust.personYang, Chen
kaust.personYang, Haoze
kaust.personHe, Yao
kaust.personTuredi, Bekir
kaust.personMohammed, Omar F.
kaust.personBakr, Osman M.


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