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Wide spectral sensitivity of monolithic a-SiC:H pi'n/pin photodiode outside the visible spectrum

2015-10-30Journal article Open access
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dc.contributor.authorVieira, Manuela
dc.contributor.authorVieira, Manuel
dc.contributor.authorRodrigues, Isabel
dc.contributor.authorVaz da Silva, V
dc.contributor.authorLouro, Paula
dc.date.accessioned2018-10-29T14:15:27Z
dc.date.available2018-10-29T14:15:27Z
dc.date.issued2015-10-30
dc.description.abstractIn this paper, we experimentally demonstrate the use of near-ultraviolet steady state illumination to increase the spectral sensitivity of a double a-SiC/Si pi’n/pin photodiode beyond the visible spectrum (400 nm-880 nm). The concept is extended to implement a 1 by 4 wavelength division multiplexer with channel separation in the visible/near infrared ranges. The device consists of a p-i'(a-SiC:H)-n/p-i(a-Si:H)-n heterostructure, sandwiched between two transparent contacts. Optoelectronic characterization of the device is presented and shows the feasibility of tailoring the wavelength and bandwidth of a polychromatic mixture of different wavelengths. Results show that the spectral current under steady state ultraviolet irradiation depends strongly on the wavelength of the impinging light, and on the background intensity and irradiation side allowing controlled high-pass filtering properties. If several monochromatic pulsed lights, in the visible/near infrared (VIS/NIR) range, separately or in a polychromatic mixture illuminate the device, data shows that, front background enhances the light-to-dark sensitivity of the medium, long and infrared wavelength channels, and quench strongly the low wavelengths channels. Back background has the opposite behavior; it enhances only channel magnitude in short wavelength range and strongly reduces it in the long ones. This nonlinearity provides the possibility for selective tuning of a specific wavelength. A capacitive optoelectronic model supports the experimental results. A numerical simulation is presented.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVIEIRA, Maria Manuela Almeida Carvalho; [et al] – Wide spectral sensitivity of monolithic a-SiC:H pi'n/pin photodiode outside the visible spectrum. Sensors & Transducers. ISSN 2306-8515. Vol. 193, N.º 10, pp. 33-40pt_PT
dc.identifier.issn2306-8515
dc.identifier.issn1726-5479
dc.identifier.urihttp://hdl.handle.net/10400.21/8981
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIFSA Publishing, S. L.pt_PT
dc.relationPTDC/EEAELC/120539/2010pt_PT
dc.relation.publisherversionhttp://www.sensorsportal.com/HTML/DIGEST/P_2732.htmpt_PT
dc.subjectAmorphous SiC technologypt_PT
dc.subjectOptoelectronicspt_PT
dc.subjectSpectral sensitivitypt_PT
dc.subjectUV irradiationpt_PT
dc.subjectPhotodiodept_PT
dc.subjectMultiplexer devicept_PT
dc.subjectVIS/NIR decodingpt_PT
dc.subjectNumerical simulationpt_PT
dc.titleWide spectral sensitivity of monolithic a-SiC:H pi'n/pin photodiode outside the visible spectrumpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEEA%2F00066%2F2013/PT
oaire.citation.endPage40pt_PT
oaire.citation.issue10pt_PT
oaire.citation.startPage33pt_PT
oaire.citation.titleSensors and Transducerspt_PT
oaire.citation.volume193pt_PT
oaire.fundingStream5876
person.familyNameVieira
person.familyNameVieira
person.familyNameVaz da Silva
person.familyNameLouro
person.givenNameManuela
person.givenNameManuel
person.givenNameVitor
person.givenNamePaula
person.identifier10792
person.identifier499161
person.identifier.ciencia-id9516-E25E-BB8E
person.identifier.ciencia-idAB18-740E-B580
person.identifier.ciencia-idE511-8C08-E606
person.identifier.orcid0000-0002-1150-9895
person.identifier.orcid0000-0002-6662-6220
person.identifier.orcid0000-0003-4265-6553
person.identifier.orcid0000-0002-4167-2052
person.identifier.ridV-7860-2017
person.identifier.ridU-8346-2017
person.identifier.scopus-author-id7202140173
person.identifier.scopus-author-id36722787500
person.identifier.scopus-author-id8845716400
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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