Monte Carlo Modeling of the Light Transport in Polymer Light-Emitting Devices on Plastic Substrates

Lee, Shu-jen; Badano, Aldo; Kanicki, Jerzy

doi:10.1109/jstqe.2004.824073

Cited by 12 publications

(5 citation statements)

References 22 publications

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“…The experimental light-emission angular distribution of our green PLED is very close to that of a Lambertian light source, in agreement with published results. 35 Also we have obtained the best agreement between experimental and Monte Carlo simulated results 34 when we take into account refractions in the PLED, back reflection from the cathode, absorption in polymer layers, and interference effect in the ITO thin films. Based on these results, we concluded that all effects must be taken into consideration when we compare simulated and experimental PLED opto-electronic characteristics.…”

Section: Angular Distribution Of Light Emissionmentioning

confidence: 60%

“…We measured the electroluminescence spectra of the green PLEDs at different angles. 34 From this we concluded that the shape of the measured electroluminescence spectra does not change with the measured angle. We then integrated the spectral radiant intensity over the entire spectra region at each angle and we normalized integrated radiant intensity to its value at the normal angle (θ = 0°) to the plane of the PLED.…”

Section: Angular Distribution Of Light Emissionmentioning

confidence: 69%

“…We then derived the luminance from the measured data by assuming a Lambertian angular distribution of the emission, which was confirmed experimentally. 34 From Table 1, we can conclude that the EL spectra of the red-, green-, and blue-light-emitting materials show a similar peak position with slight shift in position (<7 nm) in comparison with their PL spectra.…”

Section: Organic Materials Properties and Experimentsmentioning

confidence: 76%

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Optoelectronic properties of poly(fluorene) co‐polymer light‐emitting devices on a plastic substrate*

et al. 2005

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Abstract— The optoelectronic properties of red, green, and blue poly(fluorene) co‐polymer light‐emitting devices (PLEDs) on a plastic substrate having a multi‐layered structure with water vapor and oxygen transmission rates of less than 10−5 g/cm2‐day‐atm and 10−7 cc/cm2‐day‐atm, respectively, is reported. A semitransparent thin metal multi‐layer (i.e., Au/Ag/Au or Ag/Au/Ag) is placed between the plastic substrate and the ITO coating, achieving a low sheet resistance of 12–13 Ω/□ and an adequate optical transmission greater than 75%. A wider color gamut and a maximum emission efficiency of 0.7, 10, and 1.7 cd/A for red, green, and blue PLEDs, respectively, was obtained. Finally, a simple equivalent‐circuit model was used to simulate the current‐density—voltage characteristics of PLEDs.

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Section: Angular Distribution Of Light Emissionmentioning

confidence: 60%

Section: Angular Distribution Of Light Emissionmentioning

confidence: 69%

Section: Organic Materials Properties and Experimentsmentioning

confidence: 76%

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Optoelectronic properties of poly(fluorene) co‐polymer light‐emitting devices on a plastic substrate*

et al. 2005

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“…used the Monte Carlo modeling to analyze the OCE for PLEDs. [ 142 ] In order to experimentally define the OCE, van Mensfoort et al. proposed solving the inverse out‐coupling problem by measuring the light emission profile in OLEDs.…”

Section: Light Out‐coupling Strategies For Ledsmentioning

confidence: 99%

Light Out‐Coupling Management in Perovskite LEDs—What Can We Learn from the Past?

Zhang

et al. 2020

Adv Funct Materials

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The research on perovskite light‐emitting diodes (PeLEDs) has experienced an exponential growth in the past six years. The highest external quantum efficiencies (EQEs) have surpassed 20%, 20%, and 10% for red, green, and blue colored LEDs, respectively. Considering the internal quantum efficiency is already approaching unity owing to the high material quality, the limiting factor for further improving the EQE is mainly the poor light out‐coupling efficiencies. Here, by reviewing the progress on the light out‐coupling studies for PeLEDs, organic LEDs (OLEDs), conventional semiconductor LEDs, and other special LEDs, the rational design guidelines are summarized for enhancing PeLED out‐coupling. Briefly, these design guidelines include: 1) introducing nanostructures into the active layer or tuning the thickness of it to couple out the waveguide modes, 2) adding nanostructures between the active layer and transparent electrodes to couple the waveguide modes to substrate modes, 3) adding nanostructures such as nanowires to the glass substrate to couple the substrate mode to air. Essentially, these guidelines indicate that implementing nanophotonic engineering on PeLEDs is a highly promising direction to explore, so as to substantially enhance the device performance.

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“…e.g. [6]- [7]. Cañizo et al [8] have shown the great potential of the Monte Carlo method in their study of photon conversion for solar cells.…”

Section: Introductionmentioning

confidence: 99%

Challenges with balancing excitations in intermediate-band solar cells

Sætre

2015

2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC)

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New insight into the potential of practical solar cells can be given through alternative modeling approaches like Monte Carlo simulations. In the present work, the performance of intermediate band solar cells was examined by this method. It is demonstrated that the balance of excitations from the valence band to the intermediate band and from the intermediate band to the conduction band is of great importance for the performance of such cells. Several cases with different distributions of photons given by ASTM standards have been employed in order to detect spectrum sensitivity. Incident photons are accounted for as they interact with the electrons in the valence band or in the intermediate band. Index Terms -excitation modeling, intermediate-band cells, monte carlo simulation, photon absorption.

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Monte Carlo Modeling of the Light Transport in Polymer Light-Emitting Devices on Plastic Substrates

Cited by 12 publications

References 22 publications

Optoelectronic properties of poly(fluorene) co‐polymer light‐emitting devices on a plastic substrate*

Optoelectronic properties of poly(fluorene) co‐polymer light‐emitting devices on a plastic substrate*

Light Out‐Coupling Management in Perovskite LEDs—What Can We Learn from the Past?

Challenges with balancing excitations in intermediate-band solar cells

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