Transparent and conductive CdS:Ca thin films for optoelectronic applications

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dc.authoridYilmaz, Salih/0000-0002-3006-4473
dc.authoridPOLAT, ISMAIL/0000-0002-5134-0246
dc.contributor.authorYilmaz, S.
dc.contributor.authorPolat, I.
dc.contributor.authorTomakin, M.
dc.contributor.authorBacaksiz, E.
dc.date.accessioned2025-01-06T17:36:56Z
dc.date.available2025-01-06T17:36:56Z
dc.date.issued2020
dc.description.abstractThis paper presents the structural, morphological, optical and electrical evolution of Ca-doped CdS thin films. Non-doped and Ca-doped CdS samples with various amounts of Ca atoms (from 0 to 10 at.% with an increasing step of 2 at.%) were grown by spray pyrolysis route on glass slides. The structural investigation by X-ray diffraction showed that Ca-doping distorted CdS structure until 8 at.% Ca-doping and then a slight improvement in the intensity of (101) peak was obtained for 10 at.% Ca-doping compared to the other Ca-doping samples. Morphological analysis displayed a grain growth for a low amount of Ca-doping whereas higher concentration of Ca-doping led to a reduction in the grain size of CdS thin films. More stoichiometric CdS specimens were obtained after various amounts of Ca-doping according to energy dispersive X-ray spectroscopy data. Transparency of the CdS samples enhanced remarkably with the incorporation of Ca atoms in CdS with a particular concentration of 10 at.%. Tauc's plot investigation illustrated that the bandgap score of samples changed from 2.54 eV for non-doped CdS to 2.48 eV for 4 at.% Ca-doped CdS thin films. Further increase of Ca-doping doesn't vary the bandwidth of CdS samples. Photoluminescence data indicated that Ca-doped CdS thin films had lower intrinsic defects compared with non-doped CdS one. The electrical examination demonstrated that the carrier density of CdS thin films increased till 6 at.% Ca-doping and then decreased further increase of Ca-doping. However, resistivity values exhibited the opposite behavior accordingly. In conclusion, it can be pronounced that 6 at.% Ca-doped CdS thin films are the optimum specimen to be used as an effective transparent and conductive material in the optoelectronic devices.
dc.description.sponsorshipAdana Alparslan Turkes Science and Technology University [19103001]
dc.description.sponsorshipAll the authors wish to thank Adana Alparslan Turkes Science and Technology University for its financial support under a project number of 19103001.
dc.identifier.doi10.1007/s00339-020-03752-7
dc.identifier.issn0947-8396
dc.identifier.issn1432-0630
dc.identifier.issue7
dc.identifier.scopus2-s2.0-85086902168
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s00339-020-03752-7
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2033
dc.identifier.volume126
dc.identifier.wosWOS:000545722100002
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Heidelberg
dc.relation.ispartofApplied Physics A-Materials Science & Processing
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectCdS thin films
dc.subjectCa-doping
dc.subjectSpray pyrolysis
dc.subjectOptical properties
dc.subjectElectrical properties
dc.titleTransparent and conductive CdS:Ca thin films for optoelectronic applications
dc.typeArticle

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