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Improving positive and negative bias illumination stress stability in parylene passivated IGZO transistors

2016-08Journal article Open access
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dc.contributor.authorKiazadeh, Asal
dc.contributor.authorGomes, Henrique L.
dc.contributor.authorBarquinha, Pedro
dc.contributor.authorMartins, Jorge
dc.contributor.authorRovisco, Ana
dc.contributor.authorPinto, Joana V.
dc.contributor.authorMartins, Rodrigo
dc.contributor.authorFortunato, Elvira
dc.date.accessioned2017-04-07T15:56:16Z
dc.date.available2017-04-07T15:56:16Z
dc.date.issued2016-08
dc.description.abstractThe impact of a parylene top-coating layer on the illumination and bias stress instabilities of indium-gallium-zinc oxide thin-film transistors (TFTs) is presented and discussed. The parylene coating substantially reduces the threshold voltage shift caused by continuous application of a gate bias and light exposure. The operational stability improves by 75%, and the light induced instability is reduced by 35%. The operational stability is quantified by fitting the threshold voltage shift with a stretched exponential model. Storage time as long as 7 months does not cause any measurable degradation on the electrical performance. It is proposed that parylene plays not only the role of an encapsulation layer but also of a defect passivation on the top semiconductor surface. It is also reported that depletion-mode TFTs are less sensitive to light induced instabilities. This is attributed to a defect neutralization process in the presence of free electrons. Published by AIP Publishing.
dc.identifier.doi10.1063/1.4960200
dc.identifier.issn0003-6951
dc.identifier.otherAUT: HGO00803;
dc.identifier.urihttp://hdl.handle.net/10400.1/9363
dc.language.isoeng
dc.peerreviewedyes
dc.relationHigh-performance, Flexible, AUTOnomous Systems manufactured with Unique, Industrial ROLL-to-roll equipments
dc.relation.isbasedonWOS:000383091400013
dc.titleImproving positive and negative bias illumination stress stability in parylene passivated IGZO transistors
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleHigh-performance, Flexible, AUTOnomous Systems manufactured with Unique, Industrial ROLL-to-roll equipments
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/644631/EU
oaire.citation.endPage51606
oaire.citation.issue5
oaire.citation.startPage51606
oaire.citation.titleApplied Physics Letters
oaire.citation.volume109
oaire.fundingStreamH2020
person.familyNameKiazadeh
person.familyNameGomes
person.givenNameAsal
person.givenNameHenrique Leonel
person.identifier.ciencia-id0B15-2FBD-E1BA
person.identifier.orcid0000-0002-8422-5762
person.identifier.orcid0000-0003-3664-4740
person.identifier.ridK-3193-2016
person.identifier.scopus-author-id36702810600
person.identifier.scopus-author-id7005305880
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication7fb0adba-ec53-445a-81ca-0ce11c13da48
relation.isAuthorOfPublication6da677b9-927f-423d-8657-448a0dccb67c
relation.isAuthorOfPublication.latestForDiscovery7fb0adba-ec53-445a-81ca-0ce11c13da48
relation.isProjectOfPublicationfc966cb8-0420-4037-9115-33fe050948b6
relation.isProjectOfPublication.latestForDiscoveryfc966cb8-0420-4037-9115-33fe050948b6

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