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New copolymers with fluorinated and non-fluorinated benzothiadiazole units for efficient single layer near infra-red photodiodes with fast time response
Lodz Univ Technol, Poland.
Russian Acad Sci, Russia.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Ytors Fysik och Kemi. Linköpings universitet, Tekniska fakulteten.
Russian Acad Sci, Russia.
Vise andre og tillknytning
2018 (engelsk)Inngår i: Synthetic metals, ISSN 0379-6779, E-ISSN 1879-3290, Vol. 243, s. 67-74Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We describe the synthesis and photodetecting properties of new, low band-gap copolymers: P1 with 5,6-difluoro-2,1,3-benzothiadiazole and P2 with 2,1,3-benzothiadiazole, both containing diketopyrrolopyrrole acceptor units. These compounds have been used for fabrication of single layer, solution processed photodetectors. For this purpose, two blends with fullerene derivative (6,6)-phenyl-C61-butyric acid methyl ester ([60]PCBM): P1: [60]PCBM and P2:[60]PCBM, were prepared and applied as active layers in bulk-heterojunction photodiodes. For near infrared light (810 nm), these photodetectors, in spite of single layer structure, display competitive performance, showing specific detectivity up to 5.10(11) Jones, responsivity up to 0.3 A/W and rise and fall times of the transient signals below 10 mu s.

sted, utgiver, år, opplag, sider
ELSEVIER SCIENCE SA , 2018. Vol. 243, s. 67-74
Emneord [en]
Organic electronics; Donor-acceptor copolymers; Polymer photodetectors; Near-infrared photodetectors; Bulk heterojunction; Organic photodiodes
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Identifikatorer
URN: urn:nbn:se:liu:diva-150212DOI: 10.1016/j.synthmet.2018.06.005ISI: 000439402300009OAI: oai:DiVA.org:liu-150212DiVA, id: diva2:1241052
Merknad

Funding Agencies|Russian Foundation for Basic Research (RFBR) [16-29-06337 ofi_m]; Russian Federal Agency for Scientific Organizations [20089-2014-0036]; National Science Centre (Poland) [UMO-2013/09/B/ST5/03521]; Swedish Foundation for Strategic Research [SE13-0060]

Tilgjengelig fra: 2018-08-22 Laget: 2018-08-22 Sist oppdatert: 2018-08-22

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