High photo-responsivity Au/polyvinyl alcohol (PVA)+di[1-(2-ethoxyethyl)-5-nitrobenzimidazole] copper dichloride/n-Si UV photodiode

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dc.authoridGokcen, Muharrem/0000-0001-9063-3028
dc.authorwosidGokcen, Muharrem/A-1235-2016
dc.contributor.authorGokcen, Muharrem
dc.contributor.authorOrhan, Ersin
dc.contributor.authorTaran, Songul
dc.date.accessioned2021-12-01T18:46:59Z
dc.date.available2021-12-01T18:46:59Z
dc.date.issued2020
dc.department[Belirlenecek]en_US
dc.description.abstractAu/n-Si metal/semiconductor (MS) type diode was transformed into a metal/polymer/semiconductor (MPS) type diode by polyvinyl alcohol (PVA)+benzimidazole Cu complex interfacial layer to achieve better photodiode properties. Au/PVA + benzimidazole Cu complex/n-Si MPS diode's electronic and photo-responsivity (PR) properties were investigated by current-voltage (I-V) measurements under various ultraviolet (UV) (365 nm wavelength) illumination intensities (from 50 to 250 mW/cm(2)) and at room temperature. It was found that the difference between the dark and high UV illumination I(V) plots of the MPS diode exceeds 10(5) times. Thus, this higher response to UV illumination has caused the reverse region current of the diode exceeds the forward region current since the first UV illumination level (50 mW/cm(2)). This ensures both the MPS diode has a very high PR value and allows that the diode working direction can be adjusted with UV exposure. The remarkably high PR values were obtained for P = 100 mW/cm(2) as 11.01 A/W at -4.84 V, and 2.14 mA/W at 0 V. Also, main electronic parameters of the MPS diode were calculated by thermionic emission, Ohm law, Cheung&Cheung and Card&Rhoderick methods. The series resistance (Rs) values calculated for each Cheung&Cheung function are compatible each other and there is an acceptable coherence with obtained values by ohmic approach. For the surface states density (N-ss) of the MPS diode obtained for each UV illumination, it was found that they are higher than the dark ones and they shifted to lower energy region. (c) 2020 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.sna.2020.112335
dc.identifier.issn0924-4247
dc.identifier.scopus2-s2.0-85091916562en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.sna.2020.112335
dc.identifier.urihttps://hdl.handle.net/20.500.12684/10089
dc.identifier.volume315en_US
dc.identifier.wosWOS:000588260600006en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofSensors And Actuators A-Physicalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBenzimidazole Cu complexen_US
dc.subjectPVAen_US
dc.subjectPhotodiodeen_US
dc.subjectPhoto-responsivityen_US
dc.subjectUltravioleten_US
dc.subjectDiodeen_US
dc.subjectInterfaceen_US
dc.titleHigh photo-responsivity Au/polyvinyl alcohol (PVA)+di[1-(2-ethoxyethyl)-5-nitrobenzimidazole] copper dichloride/n-Si UV photodiodeen_US
dc.typeArticleen_US

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