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http://hdl.handle.net/10773/19467
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Pinto, R. M. | pt |
dc.contributor.author | Gouveia, W. | pt |
dc.contributor.author | Neves, A. I. S. | pt |
dc.contributor.author | Alves, H. | pt |
dc.date.accessioned | 2017-12-07T19:13:45Z | - |
dc.date.available | 2017-12-07T19:13:45Z | - |
dc.date.issued | 2015 | pt |
dc.identifier.issn | 0003-6951 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/19467 | - |
dc.description.abstract | We report on highly efficient organic phototransistors (OPTs) based on thin-film/single-crystal planar bilayer junctions between 5,6,11,12-tetraphenyltetracene (rubrene) and [ 6,6]-phenyl-C-61-butyric acid methyl ester (PC61BM). The OPTs show good field-effect characteristics in the dark, with high hole-mobility (4-5cm(2) V-1 s(-1)), low-contact resistance (20 k Omega cm), and low-operating voltage (<= 5V). Excellent sensing capabilities allow for light detection in the 400-750 nm range, with photocurrent/dark current ratio as high as 4 x 10(4), responsivity on the order of 20AW(-1) at 27 mu Wcm(-2), and an external quantum efficiency of 52 000%. Photocurrent generation is attributed to enhanced electron and hole transfer at the interface between rubrene and PC61BM, and fast response times are observed as a consequence of the high-mobility of the interfaces. The optoelectronic properties exhibited in these OPTs outperform those typically provided by a-Si based devices, enabling future applications where multifunctionality in a single-device is sought. (C) 2015 AIP Publishing LLC. | pt |
dc.language.iso | eng | pt |
dc.publisher | AMER INST PHYSICS | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F84820%2F2012/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147332/PT | pt |
dc.rights | openAccess | por |
dc.subject | FIELD-EFFECT TRANSISTORS | pt |
dc.subject | N-TYPE | pt |
dc.subject | QUANTUM EFFICIENCY | pt |
dc.subject | PHOTODETECTORS | pt |
dc.subject | MOBILITY | pt |
dc.subject | HETEROSTRUCTURE | pt |
dc.subject | SEMICONDUCTORS | pt |
dc.subject | PHOTORESPONSE | pt |
dc.subject | INTERFACES | pt |
dc.subject | GROWTH | pt |
dc.title | Ultrasensitive organic phototransistors with multispectral response based on thin-film/single-crystal bilayer structures | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.issue | 22 | pt |
degois.publication.title | APPLIED PHYSICS LETTERS | pt |
degois.publication.volume | 107 | pt |
dc.relation.publisherversion | 10.1063/1.4937005 | pt |
dc.identifier.doi | 10.1063/1.4937005 | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Ultrasensitive organic phototransistors with multispectral response based on thin-filmsingle-crystal bilayer structures_10.10631.4937005.pdf | 1.49 MB | Adobe PDF | View/Open |
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