Photoluminescence and electroluminescence investigations in PEPPV and its derivatives

Marai, F.; Romdhane, S.; Romdhane, A; Bourguigua, R; Loussaı̈ef, N; Fave, Jean‐Louis; Majdoub, Mustapha; Bouchriha, H.

doi:10.1016/s0379-6779(00)00246-0

Cited by 9 publications

(3 citation statements)

References 13 publications

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“…7a was excited by a 9 V pulse operating at 100 kHz with a 50% duty cycle. device time constant, and V th is the device threshold voltage of [16]. The second component of t d is the charge transport time (t trans ) which is defined by Formula 2, where d e is the distance traveled by injected electrons before recombination with holes, u e is the electron mobility, u h is the hole mobility, and E is the electric field applied to the device.…”

Section: Resultsmentioning

confidence: 99%

Transient electroluminescence determination of carrier mobility and charge trapping effects in heavily doped phosphorescent organic light-emitting diodes

Lin

Chen

et al. 2011

Solid-State Electronics

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Section: Resultsmentioning

confidence: 99%

Transient electroluminescence determination of carrier mobility and charge trapping effects in heavily doped phosphorescent organic light-emitting diodes

Lin

Chen

et al. 2011

Solid-State Electronics

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“…Here V max is the height of the applied rectangular voltage pulse and V th is the threshold voltage for charge injection [26].…”

Section: Resultsmentioning

confidence: 99%

Study of electron mobility in small molecular SAlq by transient electroluminescence method

Kumar

Jain

Kumar

et al. 2007

J. Phys. D: Appl. Phys.

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The study of electron mobility of bis(2-methyl 8-hydroxyquinoline) (triphenyl siloxy) aluminium (SAlq) by transient electroluminescence (EL) is presented. An EL device is fabricated in bilayer, ITO/N,N′-diphenyl-N, N′-bis(3-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine (TPD)/SAlq/LiF/Al configuration. The temporal evaluation of the EL with respect to the step voltage pulse is characterized by a delay time followed by a fast initial rise, which is followed by a slower rise. The delay time between the applied electrical pulse and the onset of EL is correlated with the carrier mobility (electron in our case). Transient EL studies for SAlq have been carried out at different temperatures and different applied electric fields. The electron mobility in SAlq is found to be field and temperature dependent and calculated to be 6.9 × 10−7 cm2 V−1 s−1 at 2.5 × 106 V cm−1 and 308 K. The EL decays immediately as the voltage is turned off and does not depend on the amplitude of the applied voltage pulse or dc offset.

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“…Here V max is the height of the applied rectangular voltage pulse and V th is the threshold voltage for charge injection [13].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of transient electroluminescence in organic light emitting diodes

Shukla¹,

Kumar²,

Chand³

et al. 2008

J. Phys. D: Appl. Phys.

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Mathematical simulation on the rise and decay kinetics of transient electroluminescence (EL) in organic light emitting diodes (OLEDs) is presented. The transient EL is studied with respect to a step voltage pulse. While rising, for lower values of time, the EL intensity shows a quadratic dependence on (t − tdel), where tdel is the time delay observed in the onset of EL, and finally attains saturation at a sufficiently large time. When the applied voltage is switched off, the initial EL decay shows an exponential dependence on (t − tdec), where tdec is the time when the voltage is switched off. The simulated results are compared with the transient EL performance of a bilayer OLED based on small molecular bis(2-methyl 8-hydroxyquinoline)(triphenyl siloxy) aluminium (SAlq). Transient EL studies have been carried out at different voltage pulse amplitudes. The simulated results show good agreement with experimental data. Using these simulated results the lifetime of the excitons in SAlq has also been calculated.

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Photoluminescence and electroluminescence investigations in PEPPV and its derivatives

Cited by 9 publications

References 13 publications

Transient electroluminescence determination of carrier mobility and charge trapping effects in heavily doped phosphorescent organic light-emitting diodes

Transient electroluminescence determination of carrier mobility and charge trapping effects in heavily doped phosphorescent organic light-emitting diodes

Study of electron mobility in small molecular SAlq by transient electroluminescence method

Kinetics of transient electroluminescence in organic light emitting diodes

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