White luminescence from single-layer devices of nonresonant polymer blends

Sergio Brovelli, Hao Guan, Gustaf Winroth, Oliver Fenwick, Francesco Di Stasio, Rusli Daik, W. James Feast, Francesco Meinardi, Franco Cacialli

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Poly(9, 9′-dioctyl fluorene) (F8) and poly(4, 4′-diphenylene diphenylvinylene) (PDPV) are conjugated polymers with optical transitions that are nonresonant thanks to the particular structural features of PDPV that yield a very large Stokes' shift (∼1.14 eV) between absorption and emission spectra. We present steady-state and time-resolved photoluminescence (PL) experiments showing that F8:PDPV blends are "optically disconnected" systems for which the emission spectra and PL quantum yields are the linear combination of the contributions of the individual constituents with weights given by the respective absorption coefficients and concentration in the films. Single-layer light-emitting diodes incorporating F8:PDPV blends show white electroluminescence resulting from the simultaneous exploitation of the spectral features of both blend constituents (Commission Internationale de l'Eclairage, CIE, coordinates: x=0.27 and y=0.36, in the case of 8:2 F8:PDPV molar ratio).

Original languageEnglish
Article number213301
JournalApplied Physics Letters
Volume96
Issue number21
DOIs
Publication statusPublished - 24 May 2010
Externally publishedYes

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polymer blends
luminescence
emission spectra
photoluminescence
exploitation
optical transition
electroluminescence
absorptivity
light emitting diodes
absorption spectra
shift
polymers

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Brovelli, S., Guan, H., Winroth, G., Fenwick, O., Di Stasio, F., Daik, R., ... Cacialli, F. (2010). White luminescence from single-layer devices of nonresonant polymer blends. Applied Physics Letters, 96(21), [213301]. https://doi.org/10.1063/1.3387816

White luminescence from single-layer devices of nonresonant polymer blends. / Brovelli, Sergio; Guan, Hao; Winroth, Gustaf; Fenwick, Oliver; Di Stasio, Francesco; Daik, Rusli; Feast, W. James; Meinardi, Francesco; Cacialli, Franco.

In: Applied Physics Letters, Vol. 96, No. 21, 213301, 24.05.2010.

Research output: Contribution to journalArticle

Brovelli, S, Guan, H, Winroth, G, Fenwick, O, Di Stasio, F, Daik, R, Feast, WJ, Meinardi, F & Cacialli, F 2010, 'White luminescence from single-layer devices of nonresonant polymer blends', Applied Physics Letters, vol. 96, no. 21, 213301. https://doi.org/10.1063/1.3387816
Brovelli S, Guan H, Winroth G, Fenwick O, Di Stasio F, Daik R et al. White luminescence from single-layer devices of nonresonant polymer blends. Applied Physics Letters. 2010 May 24;96(21). 213301. https://doi.org/10.1063/1.3387816
Brovelli, Sergio ; Guan, Hao ; Winroth, Gustaf ; Fenwick, Oliver ; Di Stasio, Francesco ; Daik, Rusli ; Feast, W. James ; Meinardi, Francesco ; Cacialli, Franco. / White luminescence from single-layer devices of nonresonant polymer blends. In: Applied Physics Letters. 2010 ; Vol. 96, No. 21.
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