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Article Dans Une Revue Organic Electronics Année : 2015

Poly(2-(N-carbazolyl)ethyl acrylate) as a host for high efficiency polymer light-emitting devices

Benoit H Lessard
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Milan Maric
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Didier Gigmes
Frederic Dumur
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Résumé

Poly(2-(N-carbazolyl)ethyl acrylate), a poly(acrylate) comprised of carbazole-side groups attached via a flexible chain to the polymer backbone (PVAK) has been tested as host for solution-processed polymer light-emitting devices (PLEDs). This non-conjugated polymer proved to be an excellent candidate to host wide-bandgap phosphors. Notably, this polymer exhibited a high thermal stability (Td = 322 °C), a glass transition temperature (Tg) of 91 °C and a wide bandgap corresponding to the pendent carbazole units and the disrupted π-conjugation of the polymer main chain, making this polymeric host a suitable candidate for wide bandgap triplet emitters. When tested as a host for FIrpic and Ir(ppy)3, the resulting blue and green light-emitting devices showed a maximum luminous efficiency of 18.25 and 17.74 cd/A, respectively, which are comparable to recent reports of devices made using other carbazole-based oxygen-rich polymeric hosts. The polymer was also characterized by UV–visible absorption, photoluminescence spectroscopy as well as cyclic voltammetry

Domaines

Matériaux
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Dates et versions

hal-01406452 , version 1 (01-12-2016)

Identifiants

Citer

Benoit H Lessard, Layla Beouch, Fabrice Goubard, Guillaume Wantz, Milan Maric, et al.. Poly(2-(N-carbazolyl)ethyl acrylate) as a host for high efficiency polymer light-emitting devices. Organic Electronics, 2015, 17, pp.377-385. ⟨10.1016/j.orgel.2014.12.019⟩. ⟨hal-01406452⟩
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