Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/13372
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dc.contributor.authorYanılmaz, Alper-
dc.contributor.authorÜnverdi, Özhan-
dc.contributor.authorÇelebi, Cem-
dc.date.accessioned2023-04-19T12:39:41Z-
dc.date.available2023-04-19T12:39:41Z-
dc.date.issued2023-
dc.identifier.issn0924-4247-
dc.identifier.urihttps://doi.org/10.1016/j.sna.2023.114336-
dc.identifier.urihttps://hdl.handle.net/11147/13372-
dc.description.abstractOne of the key limitations for the device performance of the silicon (Si) based photodetector arrays is the optical crosstalk effect encountered between photoactive elements as well. The scope of this work is to reduce optical crosstalk and thus increasing the device performances with graphene and Si integration. This paper presents the design, fabrication process, and performance evaluation of self-powered individual Graphene/Silicon on Insulator (GSOI) based Schottky barrier photodiode array (PDA) devices. A 4-element GSOI Schottky barrier PDA with separate graphene electrodes is fabricated to examine possible optical crosstalk encountered between each diode in the array structure. Here, monolayer graphene is utilized as hole collecting separate electrode on individually arrayed n-type Si on SOI substrate by photolithography technique. Each diode in the array exhibited a clear rectifying Schottky character. Photoresponse characterizations revealed that all diodes had excellent device performance even in self-powered mode in terms of an Ilight/Idark ratio up to 104, a responsivity of ∼0.12 A/W, a specific detectivity of around 1.6 × 1012 Jones, and a response speed of ∼1.32 μs at 660 nm wavelength. As revealed by optical crosstalk measurement, the device with pixel pitch of 1.5 mm had a total crosstalk of about 0.10% (−60 dB) per array. These results showed that the optical crosstalk between neighboring n-Si elements can be greatly minimized when graphene is used as separated electrode on arrayed Si on SOI substrate. Our study is expected give an insight into the performance characteristics of GSOI PDA devices which have great potential to be used in many technological applications such as multi-wavelength light measurement, level metering, high-speed photometry and position/motion detection. © 2023 Elsevier B.V.en_US
dc.description.sponsorshipThe authors would like to thank the researchers in Center for Materials Research of İzmir Institute of Technology (İYTE MAM) and Ermaksan Optoelectronic R&D Center in Turkey for their support in device fabrication processes. This work is supported within the scope of the scientific research project as a part of the Project No. BAP113 which was accepted by the Yaşar University Project Evaluation Commission (PEC).en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofSensors and Actuators, A: Physicalen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectGrapheneen_US
dc.subjectOptoelectronic devicesen_US
dc.subjectPhotodiode arraysen_US
dc.subjectSchottky junctionen_US
dc.subjectSilicon-on-insulatoren_US
dc.subjectPhotodetectorsen_US
dc.titleSelf-Powered Photodetector Array Based on Individual Graphene Electrode and Silicon-On Integrationen_US
dc.typeArticleen_US
dc.institutionauthorYanılmaz, Alper-
dc.institutionauthorÇelebi, Cem-
dc.departmentİzmir Institute of Technology. Physicsen_US
dc.identifier.volume355en_US
dc.identifier.wosWOS:001048677900001en_US
dc.identifier.scopus2-s2.0-85151258361en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1016/j.sna.2023.114336-
dc.authorscopusid57190169202-
dc.authorscopusid26434008100-
dc.authorscopusid22940196500-
dc.identifier.wosqualityQ1-
dc.identifier.scopusqualityQ1-
item.fulltextWith Fulltext-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.grantfulltextopen-
crisitem.author.dept04.05. Department of Pyhsics-
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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