Organic Light Emitting Diode (OLED) Using Different Hole Transport and Injecting Layers

Othman, M.K.; Salleh, Muhamad Mat; Mat, A.F.A.

doi:10.1109/smelec.2006.381034

Cited by 4 publications

(3 citation statements)

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“…Using an HTL reduces the exciton quenching at the HIL/active-layer interface, leading to a higher radiative recombination rate. 37 PVK is a well-studied HTL that has a low valence band (VB) level, reducing the energy gap between the HIL and EML. 38 The dye tPDI 2 N-EH and PFO were used as the active components in the emitting layer in a 9:1 ratio.…”

Section: Resultsmentioning

confidence: 99%

“…For conventional OLED devices, PEDOT:PSS is frequently used as the HIL. , PEDOT:PSS has high conductivity, high visible-light transmittance, and excellent thermal stability. Using an HTL reduces the exciton quenching at the HIL/active-layer interface, leading to a higher radiative recombination rate . PVK is a well-studied HTL that has a low valence band (VB) level, reducing the energy gap between the HIL and EML .…”

Section: Resultsmentioning

confidence: 99%

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Interlayer Engineering of Flexible and Large-Area Red Organic-Light-Emitting Diodes Based on an N-Annulated Perylene Diimide Dimer

Rahmati

Dayneko

Pahlevani

et al. 2019

ACS Appl. Electron. Mater.

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Flexible red OLEDs based on a quadruple-layer stack, in between electrodes, with 160 mm 2 active area were fabricated in ambient air on PET via slotdie-coating. For the OLED structure PET/ITO/PEDOT:PSS/PVK/PFO:tPDI 2 N-EH/ZnO/Ag, the ink formulations and coating parameters for each layer were systematically evaluated and optimized. The air-stable red-light-emitting material tPDI 2 N-EH was successfully utilized as blended homogeneous film with PFO for the emitting layer. The use of an organic hole-transport layer (PVK) and inorganic electron injection layer (ZnO) significantly improved the brightness of the reference device from 4 to 303 cd/m 2 . Surface analysis using AFM measurements showed that the PVK interlayer reduced the surface roughness of the hole injection layer (PEDOT:PSS) from 0.45 to 0.17 nm, which improved the ability to form uniform emitting layers on top. In addition, the ZnO interlayer decreased surface roughness from 1.26 to 0.85 nm and reduced the turn-on voltage of the device from 5.0 to 2.8 V.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Interlayer Engineering of Flexible and Large-Area Red Organic-Light-Emitting Diodes Based on an N-Annulated Perylene Diimide Dimer

Rahmati

Dayneko

Pahlevani

et al. 2019

ACS Appl. Electron. Mater.

View full text Add to dashboard Cite

show abstract

“…PEDOT:PSS has high conductivity, high visible light transmittance, and excellent thermal stability. Using an HTL reduces the exciton quenching at the HIL/active-layer interface, leading to a higher radiative recombination rate 32 . PVK is a well-studied HTL that has a low valence band (VB) level, reducing the energy gap between the HIL and EML 33 .…”

Section: Device Fabricationmentioning

confidence: 99%

Interlayer Engineering of Flexible and Large Area Red Organic Light Emitting Diodes Based on a N-Annulated Perylene Diimide Dimer

Rahmati¹,

Pahlevani²,

Welch³

2019

Preprint

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Flexible red OLEDs based on a quadruple layer stack in-between electrodes with 160 mm2 active area were fabricated in ambient air on PET via slot-die coating. For the OLED structure PET/ITO/PEDOT:PSS/PVK/PFO:tPDI2N-EH/ZnO/Ag the ink formulations and coating parameters for each layer were systematically evaluated and optimized. The air-stable red-light emitting material tPDI2N-EH was successfully utilized as blended homogeneous film with PFO for the emitting layer. The use of an organic hole-transport layer (PVK) and inorganic electron injection layer (ZnO) significantly improved the brightness of the reference device from 4 cd/m2 to 303 cd/m2. Surface analysis using AFM measurements showed that PVK interlayer reduced the surface roughness of the hole injection layer (PEDT:PSS) from 0.45 nm to 0.17 nm, which improved the ability to form uniform emitting layers on top. In addition, the ZnO interlayer improved the average roughness of the device from 1.26 nm to 0.85 nm and reduced the turn-on voltage of the device from 5.0 V to 2.8 V.

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New generation illumination engineering-an overview of recent trends in science & technology

Kar

2014

2014 First International Conference on Automation, Control, Energy and Systems (ACES)

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Organic Light Emitting Diode (OLED) Using Different Hole Transport and Injecting Layers

Cited by 4 publications

References 3 publications

Interlayer Engineering of Flexible and Large-Area Red Organic-Light-Emitting Diodes Based on an N-Annulated Perylene Diimide Dimer

Interlayer Engineering of Flexible and Large-Area Red Organic-Light-Emitting Diodes Based on an N-Annulated Perylene Diimide Dimer

Interlayer Engineering of Flexible and Large Area Red Organic Light Emitting Diodes Based on a N-Annulated Perylene Diimide Dimer

New generation illumination engineering-an overview of recent trends in science & technology

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Organic Light Emitting Diode (OLED) Using Different Hole Transport and Injecting Layers

Cited by 4 publications

References 3 publications

Interlayer Engineering of Flexible and Large-Area Red Organic-Light-Emitting Diodes Based on an N-Annulated Perylene Diimide Dimer

Interlayer Engineering of Flexible and Large-Area Red Organic-Light-Emitting Diodes Based on an N-Annulated Perylene Diimide Dimer

Interlayer Engineering of Flexible and Large Area Red Organic Light Emitting Diodes Based on a N-Annulated Perylene Diimide Dimer

New generation illumination engineering-an overview of recent trends in science &amp; technology

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New generation illumination engineering-an overview of recent trends in science & technology