High performance flexible copper indium gallium selenide core-shell nanorod array photodetectors

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dc.authoridAl-Mayalee, Khalidah H./0000-0003-2763-4364
dc.authoridKeles, Filiz/0000-0003-4548-489X
dc.contributor.authorBadradeen, Emad
dc.contributor.authorBrozak, Matthew
dc.contributor.authorKeles, Filiz
dc.contributor.authorAl-Mayalee, Khalidah
dc.contributor.authorKarabacak, Tansel
dc.date.accessioned2024-11-07T13:34:09Z
dc.date.available2024-11-07T13:34:09Z
dc.date.issued2017
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractIn this study, the authors fabricated high performance core-shell nanostructured flexible photodetectors on a polyimide substrate of Kapton. For this purpose, p-type copper indium gallium selenide (CIGS) nanorod arrays (core) were coated with aluminum doped zinc oxide (AZO) films (shell) at relatively high Ar gas pressures. CIGS nanorods were prepared by glancing angle deposition (GLAD) technique using radio frequency (RF) magnetron sputtering unit at room temperature. AZO films were deposited by RF sputtering at Ar pressures of 1.0 x 10(-2) mbar (high pressure sputtering) for the shell and at 3.0 x 10(-3) mbar (low pressure sputtering) to create a top contact. As a comparison, the authors also fabricated conventional planar thin film devices incorporating CIGS film of similar material loading to that of CIGS nanorods. The morphological characterization was carried out by field-emission scanning electron microscope. The photocurrent measurement was conducted under 1.5 AM sun at zero electrical biasing, where CIGS devices were observed to absorb in the ultraviolet-visible-near infrared spectrum. GLAD core-shell nanorod photodetectors were shown to demonstrate enhanced photoresponse with an average photocurrent density values of 4.4, 3.2, 2.5, 3.0, and 2.5 mu A/cm(2) for bending angles of 0 degrees; 20 degrees; 40 degrees; 60 degrees, and 80 degrees, respectively. These results are significantly higher than the photocurrent of most of the flexible photodetectors reported in the literature. Moreover, our nanorod devices recovered their photoresponse after several bending experiments that indicate their enhanced mechanical durability. On the other hand, thin film devices did not show any notable photoresponse. Improved photocurrent of CIGS nanorod devices is believed to be due to their enhanced light trapping property and the reduced interelectrode distance because of the core-shell structure, which allows the efficient capture of the photogenerated carriers. In addition, enhanced mechanical durability is achieved by the GLAD nanorod microstructure on a flexible substrate. This approach can open a new strategy to boost the performance of flexible photodetectors and wearable electronics. (C) 2017 American Vacuum Society.
dc.description.sponsorshipNSF [EPS-1003970, 1159830]; Directorate For Engineering; Div Of Chem, Bioeng, Env, & Transp Sys [1159830] Funding Source: National Science Foundation
dc.description.sponsorshipThis work was supported by NSF (Grant Nos. EPS-1003970 and 1159830). The authors would like to thank UA Little Rock Center for Integrative Nanotechnology Science for their helping with SEM and UV-Vis-NIR spectroscopy measurements.
dc.identifier.doi10.1116/1.4982681
dc.identifier.issn0734-2101
dc.identifier.issn1520-8559
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85018445097
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1116/1.4982681
dc.identifier.urihttps://hdl.handle.net/11480/15830
dc.identifier.volume35
dc.identifier.wosWOS:000401122700012
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherA V S Amer Inst Physics
dc.relation.ispartofJournal of Vacuum Science & Technology A
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectThin-Films
dc.subjectOptical-Absorption
dc.subjectSpectral-Response
dc.subjectAngle Deposition
dc.subjectSemitransparent
dc.subjectNanostructures
dc.subjectNanowires
dc.subjectUltrathin
dc.titleHigh performance flexible copper indium gallium selenide core-shell nanorod array photodetectors
dc.typeArticle

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