Optical, electrical and electrochemical evaluation of sputtered platinum counter electrodes for dye sensitized solar cells

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dc.citation.volume364
dc.contributor.authorMoraes, R. S.
dc.contributor.authorSaito, E. [UNIFESP]
dc.contributor.authorLeite, D. M. G.
dc.contributor.authorMassi, M. [UNIFESP]
dc.contributor.authorda Silva Sobrinho, A. S.
dc.coverageAmsterdam
dc.date.accessioned2020-08-21T17:00:21Z
dc.date.available2020-08-21T17:00:21Z
dc.date.issued2016
dc.description.abstractSince Gratzel and O'Regan started in 1991, dye-sensitized solar cells (DSSC) have been extensively studied around the world. In addition to increasing efficiency, their characteristics such as low cost materials and inexpensive manufacturing processes are attractive for organic solar cells. Several parts of DSSC devices are being researched such as semiconductor engineering, low cost counter electrodes, electrolytes, and dyes. In this work, platinum (Pt) thin films were deposited by sputtering technique to produce counter electrodes for DSSC. The films were characterized by profilometry, elipsometry, four-point probe sheet resistance, spectrophotometry, and electrochemical impedance spectroscopy. The electrode response was also compared to that built from a commercial platinum solution. The results allow us to determine the minimum Pt film thickness necessary to achieve a relevant reduction of the sheet resistance and charge transfer resistance, which preserve a significant electrode transparency. The 22 nm and 24.8 nm thick films combined low charge transfer resistance and good transparency. The 122 nm Pt film presented the lowest charge transfer resistance. (C) 2015 Elsevier B.V. All rights reserved.en
dc.description.affiliationTechnol Inst Aeronaut ITA, Dept Phys, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUniv Fed Sao Paulo, ICT, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, ICT, Sao Jose Dos Campos, SP, Brazil
dc.description.provenanceMade available in DSpace on 2020-08-21T17:00:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2016. Added 1 bitstream(s) on 2020-08-27T14:19:08Z : No. of bitstreams: 1 WOS000369957800030.pdf: 1093900 bytes, checksum: 579cd48ad242f0c25e157e1faaa9474d (MD5)en
dc.description.sourceWeb of Science
dc.description.sponsorshipCAPES/PNPD
dc.description.sponsorshipCAPES/PVNS
dc.description.sponsorshipCNPq
dc.description.sponsorshipPhotonics Division of Institute of Advanced Studies (EFO-IEAv)
dc.description.sponsorshipIDCNPq: 555.686/2010-8
dc.format.extent229-234
dc.identifierhttp://dx.doi.org/10.1016/j.apsusc.2015.12.114
dc.identifier.citationApplied Surface Science. Amsterdam, v. 364, p. 229-234, 2016.
dc.identifier.doi10.1016/j.apsusc.2015.12.114
dc.identifier.fileWOS000369957800030.pdf
dc.identifier.issn0169-4332
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/57953
dc.identifier.wosWOS:000369957800030
dc.language.isoeng
dc.publisherElsevier Science Bv
dc.relation.ispartofApplied Surface Science
dc.rightsAcesso aberto
dc.subjectEnergy conversionen
dc.subjectSolar energyen
dc.subjectDSSC counter electrodeen
dc.subjectPlatinum catalytic thin filmen
dc.titleOptical, electrical and electrochemical evaluation of sputtered platinum counter electrodes for dye sensitized solar cellsen
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