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Colour filtering in a-SiC : H based p-i-n-p-i-n cells: A trade-off between bias polarity and absorption regions

2006-11-08Journal article Open access
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dc.contributor.authorVieira, Manuela
dc.contributor.authorFantoni, Alessandro
dc.contributor.authorLouro, Paula
dc.contributor.authorFernandes, Miguel
dc.contributor.authorMartins, J.
dc.contributor.authorSchwarz, R.
dc.contributor.authorLavareda, G.
dc.contributor.authorCarvalho, C. N.
dc.date.accessioned2012-03-22T15:36:54Z
dc.date.available2012-03-22T15:36:54Z
dc.date.issued2006-11-08
dc.description.abstractA large area colour imager optically addressed is presented. The colour imager consists of a thin wide band gap p-i-n a-SiC:H filtering element deposited on the top of a thick large area a-SiC:H(-p)/a-Si:H(-i)/a-SiC:H(-n) image sensor, which reveals itself an intrinsic colour filter. In order to tune the external applied voltage for full colour discrimination the photocurrent generated by a modulated red light is measured under different optical and electrical bias. Results reveal that the integrated device behaves itself as an imager and a filter giving information not only on the position where the optical image is absorbed but also on it wavelength and intensity. The amplitude and sign of the image signals are electrically tuneable. In a wide range of incident fluxes and under reverse bias, the red and blue image signals are opposite in sign and the green signal is suppressed allowing blue and red colour recognition. The green information is obtained under forward bias, where the blue signal goes down to zero and the red and green remain constant. Combining the information obtained at this two applied voltages a RGB colour image picture can be acquired without the need of the usual colour filters or pixel architecture. A numerical simulation supports the colour filter analysis.por
dc.identifier.citationVIEIRA, M.; [et al] – Colour filtering in a-SiC : H based p-i-n-p-i-n cells: A trade-off between bias polarity and absorption regions. Sensors and Actuators A: Physical. 2ISSN 0924-4247. Vol. 132, N.º 1 (2006), pp. 218-223.por
dc.identifier.doi10.1016/j.sna.2006.02.005
dc.identifier.issn0924-4247
dc.identifier.urihttp://hdl.handle.net/10400.21/1339
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevier Science SApor
dc.subjectColour and image sensitive detectorspor
dc.subjectSpectral sensitivitypor
dc.subjectLight filteringpor
dc.subjectSelf-biasing effectpor
dc.subjectMulti-layer devicespor
dc.titleColour filtering in a-SiC : H based p-i-n-p-i-n cells: A trade-off between bias polarity and absorption regionspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceLausannepor
oaire.citation.endPage223por
oaire.citation.issue1por
oaire.citation.startPage218por
oaire.citation.titleSensors and Actuators A: Physicalpor
oaire.citation.volume132
person.familyNameVieira
person.familyNameFantoni
person.familyNameLouro
person.familyNameFernandes
person.givenNameManuela
person.givenNameAlessandro
person.givenNamePaula
person.givenNameMiguel
person.identifier10792
person.identifier499161
person.identifier.ciencia-id9516-E25E-BB8E
person.identifier.ciencia-id241E-E87C-552F
person.identifier.ciencia-idE511-8C08-E606
person.identifier.ciencia-idDD1B-859F-EB0B
person.identifier.orcid0000-0002-1150-9895
person.identifier.orcid0000-0002-9938-0351
person.identifier.orcid0000-0002-4167-2052
person.identifier.orcid0000-0002-0765-474X
person.identifier.ridV-7860-2017
person.identifier.ridK-1105-2016
person.identifier.ridU-8346-2017
person.identifier.scopus-author-id7202140173
person.identifier.scopus-author-id7006535604
person.identifier.scopus-author-id8845716400
person.identifier.scopus-author-id24450183800
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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