Molecular-scale simulation of electroluminescence in a multilayer white organic light-emitting diode

M. Mesta, M. Carvelli, R.J. Vries, de, H. Eersel, van, J.J.M. Holst, van der, M. Schober, M. Furno, B. Lüssem, K. Leo, P. Loebl, R. Coehoorn, P.A. Bobbert

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98 Citaties (Scopus)

Uittreksel

In multilayer white organic light-emitting diodes the electronic processes in the various layers—injection and motion of charges as well as generation, diffusion and radiative decay of excitons—should be concerted such that efficient, stable and colour-balanced electroluminescence can occur. Here we show that it is feasible to carry out Monte Carlo simulations including all of these molecular-scale processes for a hybrid multilayer organic light-emitting diode combining red and green phosphorescent layers with a blue fluorescent layer. The simulated current density and emission profile are shown to agree well with experiment. The experimental emission profile was obtained with nanometre resolution from the measured angle- and polarization-dependent emission spectra. The simulations elucidate the crucial role of exciton transfer from green to red and the efficiency loss due to excitons generated in the interlayer between the green and blue layers. The perpendicular and lateral confinement of the exciton generation to regions of molecular-scale dimensions revealed by this study demonstrate the necessity of molecular-scale instead of conventional continuum simulation.
TaalEngels
Pagina's652-658
TijdschriftNature Materials
Volume12
Nummer van het tijdschrift7
DOI's
StatusGepubliceerd - 2013

Vingerafdruk

Electroluminescence
Organic light emitting diodes (OLED)
Excitons
electroluminescence
Multilayers
light emitting diodes
excitons
simulation
profiles
interlayers
emission spectra
Current density
Polarization
injection
current density
continuums
Color
color
LDS 751
decay

Citeer dit

Mesta, M., Carvelli, M., Vries, de, R. J., Eersel, van, H., Holst, van der, J. J. M., Schober, M., ... Bobbert, P. A. (2013). Molecular-scale simulation of electroluminescence in a multilayer white organic light-emitting diode. Nature Materials, 12(7), 652-658. DOI: 10.1038/NMAT3622
Mesta, M. ; Carvelli, M. ; Vries, de, R.J. ; Eersel, van, H. ; Holst, van der, J.J.M. ; Schober, M. ; Furno, M. ; Lüssem, B. ; Leo, K. ; Loebl, P. ; Coehoorn, R. ; Bobbert, P.A./ Molecular-scale simulation of electroluminescence in a multilayer white organic light-emitting diode. In: Nature Materials. 2013 ; Vol. 12, Nr. 7. blz. 652-658
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abstract = "In multilayer white organic light-emitting diodes the electronic processes in the various layers—injection and motion of charges as well as generation, diffusion and radiative decay of excitons—should be concerted such that efficient, stable and colour-balanced electroluminescence can occur. Here we show that it is feasible to carry out Monte Carlo simulations including all of these molecular-scale processes for a hybrid multilayer organic light-emitting diode combining red and green phosphorescent layers with a blue fluorescent layer. The simulated current density and emission profile are shown to agree well with experiment. The experimental emission profile was obtained with nanometre resolution from the measured angle- and polarization-dependent emission spectra. The simulations elucidate the crucial role of exciton transfer from green to red and the efficiency loss due to excitons generated in the interlayer between the green and blue layers. The perpendicular and lateral confinement of the exciton generation to regions of molecular-scale dimensions revealed by this study demonstrate the necessity of molecular-scale instead of conventional continuum simulation.",
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Mesta, M, Carvelli, M, Vries, de, RJ, Eersel, van, H, Holst, van der, JJM, Schober, M, Furno, M, Lüssem, B, Leo, K, Loebl, P, Coehoorn, R & Bobbert, PA 2013, 'Molecular-scale simulation of electroluminescence in a multilayer white organic light-emitting diode' Nature Materials, vol. 12, nr. 7, blz. 652-658. DOI: 10.1038/NMAT3622

Molecular-scale simulation of electroluminescence in a multilayer white organic light-emitting diode. / Mesta, M.; Carvelli, M.; Vries, de, R.J.; Eersel, van, H.; Holst, van der, J.J.M.; Schober, M.; Furno, M.; Lüssem, B.; Leo, K.; Loebl, P.; Coehoorn, R.; Bobbert, P.A.

In: Nature Materials, Vol. 12, Nr. 7, 2013, blz. 652-658.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Molecular-scale simulation of electroluminescence in a multilayer white organic light-emitting diode

AU - Mesta,M.

AU - Carvelli,M.

AU - Vries, de,R.J.

AU - Eersel, van,H.

AU - Holst, van der,J.J.M.

AU - Schober,M.

AU - Furno,M.

AU - Lüssem,B.

AU - Leo,K.

AU - Loebl,P.

AU - Coehoorn,R.

AU - Bobbert,P.A.

PY - 2013

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N2 - In multilayer white organic light-emitting diodes the electronic processes in the various layers—injection and motion of charges as well as generation, diffusion and radiative decay of excitons—should be concerted such that efficient, stable and colour-balanced electroluminescence can occur. Here we show that it is feasible to carry out Monte Carlo simulations including all of these molecular-scale processes for a hybrid multilayer organic light-emitting diode combining red and green phosphorescent layers with a blue fluorescent layer. The simulated current density and emission profile are shown to agree well with experiment. The experimental emission profile was obtained with nanometre resolution from the measured angle- and polarization-dependent emission spectra. The simulations elucidate the crucial role of exciton transfer from green to red and the efficiency loss due to excitons generated in the interlayer between the green and blue layers. The perpendicular and lateral confinement of the exciton generation to regions of molecular-scale dimensions revealed by this study demonstrate the necessity of molecular-scale instead of conventional continuum simulation.

AB - In multilayer white organic light-emitting diodes the electronic processes in the various layers—injection and motion of charges as well as generation, diffusion and radiative decay of excitons—should be concerted such that efficient, stable and colour-balanced electroluminescence can occur. Here we show that it is feasible to carry out Monte Carlo simulations including all of these molecular-scale processes for a hybrid multilayer organic light-emitting diode combining red and green phosphorescent layers with a blue fluorescent layer. The simulated current density and emission profile are shown to agree well with experiment. The experimental emission profile was obtained with nanometre resolution from the measured angle- and polarization-dependent emission spectra. The simulations elucidate the crucial role of exciton transfer from green to red and the efficiency loss due to excitons generated in the interlayer between the green and blue layers. The perpendicular and lateral confinement of the exciton generation to regions of molecular-scale dimensions revealed by this study demonstrate the necessity of molecular-scale instead of conventional continuum simulation.

U2 - 10.1038/NMAT3622

DO - 10.1038/NMAT3622

M3 - Article

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EP - 658

JO - Nature Materials

T2 - Nature Materials

JF - Nature Materials

SN - 1476-1122

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Mesta M, Carvelli M, Vries, de RJ, Eersel, van H, Holst, van der JJM, Schober M et al. Molecular-scale simulation of electroluminescence in a multilayer white organic light-emitting diode. Nature Materials. 2013;12(7):652-658. Beschikbaar vanaf, DOI: 10.1038/NMAT3622