Hybrid film of single-layer graphene and carbon nanotube as transparent conductive electrode for organic light emitting diode

The effects of anti-reflective coatings (ARC) on organic light emitting diode (OLED) optical characteristics are reported in this paper. The light output produced from the OLED is not 100%. But the emitted light is trapped due to various Modes. The losses at the glass air substrate interfaces of an OLED are addressed in this work. The Anti-Reflective coatings increase the light output by reducing OLED reflections at the interface between glass and air. The Finite Difference Time Domain (FDTD) method and the Fresnel theory have been used to design the device and study the effects on OLED of the Single Layer Anti-Reflective Coating (SLAR) and Double Layer Anti-Reflective Coating (DLAR). The thicknesses and refractive indices of the layers of the anti-reflective coatings were optimized. We also compared the light out coupling power efficiency of the SLAR coated OLED with that of an OLED with a DLAR coating and also with Conventional OLED. The results show that the enhancement in light output efficiency of the DLAR coated OLED was slightly higher than that of the SLAR coated OLED.

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The application of single-layer graphene modified with solution-processed TiOx and PEDOT:PSS as a transparent conductive anode in organic light-emitting diodes

Organic Electronics ◽

10.1016/j.orgel.2013.10.003 ◽

2013 ◽

Vol 14 (12) ◽

pp. 3348-3354 ◽

Cited By ~ 32

Author(s):

Xiao-Zhao Zhu ◽

Yuan-Yuan Han ◽

Yuan Liu ◽

Kai-Qun Ruan ◽

Mei-Feng Xu ◽

...

Keyword(s):

Light Emitting Diodes ◽

Single Layer ◽

Organic Light Emitting Diodes ◽

Single Layer Graphene ◽

Solution Processed ◽

Light Emitting ◽

Layer Graphene ◽

Organic Light

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Liquid-phase exfoliation of chemical vapor deposition-grown single layer graphene and its application in solution-processed transparent electrodes for flexible organic light-emitting devices

Applied Physics Letters ◽

10.1063/1.4904826 ◽

2014 ◽

Vol 105 (24) ◽

pp. 243509 ◽

Cited By ~ 8

Author(s):

Chaoxing Wu ◽

Fushan Li ◽

Wei Wu ◽

Wei Chen ◽

Tailiang Guo

Keyword(s):

Liquid Phase ◽

Vapor Deposition ◽

Single Layer ◽

Chemical Vapor ◽

Single Layer Graphene ◽

Light Emitting ◽

Light Emitting Devices ◽

Layer Graphene ◽

Organic Light ◽

Liquid Phase Exfoliation

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Single-layer organic light-emitting diode with 2.0% external quantum efficiency prepared by spin-coating

Chemical Physics Letters ◽

10.1016/s0009-2614(00)00279-7 ◽

2000 ◽

Vol 320 (5-6) ◽

pp. 387-392 ◽

Cited By ~ 38

Author(s):

Y.D. Jin ◽

J.P. Yang ◽

P.L. Heremans ◽

M. Van der Auweraer ◽

E. Rousseau ◽

...

Keyword(s):

Quantum Efficiency ◽

Spin Coating ◽

External Quantum Efficiency ◽

Light Emitting Diode ◽

Single Layer ◽

Light Emitting ◽

Organic Light Emitting Diode ◽

Organic Light

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Covalent Functionalized Conjugated Dendrimers for Organic Light Emitting Diodes: Synthesis, Characterization, and the Deep Blue Electroluminescence

Australian Journal of Chemistry ◽

10.1071/ch10320 ◽

2011 ◽

Vol 64 (2) ◽

pp. 160 ◽

Cited By ~ 3

Author(s):

Yan Zhou ◽

Lin Ding ◽

Li-Ming Xiang ◽

Jian Pei

Keyword(s):

Light Emitting Diode ◽

Photophysical Properties ◽

Single Layer ◽

Blue Colour ◽

Light Emitting ◽

Organic Light Emitting Diode ◽

Deep Blue ◽

Organic Light ◽

Hole Transporting ◽

Cie Chromaticity

Two deep blue-emitting dendrimers 11 and 12 with carbazole containing dendrons were developed in this contribution. The carbazole-containing units were introduced to tune the charge-transporting property of the desired dendrimers. The investigation of photophysical properties, electrochemical, and electroluminescence properties demonstrated that the balance between electron and hole transporting was achieved from both dendrimers. The preliminary organic light-emitting diode (OLED) fabrication achieved a pure blue colour with stable CIE chromaticity coordinates (X: 0.15–0.16, Y: 0.09–0.10) for 11 and 12. Single layer deep blue emitting diode devices with higher efficiency are achieved without the colour changing. The investigation of OLED performance indicates that dendrimers 11 and 12 are promising light-emitting materials with pure blue colour and good colour stability for OLEDs.

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Promising Hybrid Graphene-Silver Nanowire Composite Electrode for Flexible Organic Light-Emitting Diodes

Scientific Reports ◽

10.1038/s41598-019-54424-3 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 4

Author(s):

Huiying Li ◽

Yunfei Liu ◽

Anyang Su ◽

Jintao Wang ◽

Yu Duan

Keyword(s):

Grain Boundaries ◽

Carrier Concentration ◽

Silver Nanowires ◽

Light Emitting Diode ◽

Silver Nanowire ◽

Single Layer Graphene ◽

Transparent Conductive Electrode ◽

Vacancy Defects ◽

Light Emitting ◽

Organic Light

AbstractThanks to its high transparency, high carrier mobility, and thermal conductivity, graphene is often used as transparent conductive electrode (TCE) in optoelectronic devices. However, the low carrier concentration and high resistance caused by vacancy defects, grain boundaries, and superposed folds in typical graphene films limit its application. In this study, we propose a method to increase both the conductivity and carrier concentration in single-layer graphene (SLG) by blending it with silver nanowires (AgNWs). AgNWs provide connections between grain boundaries of graphene to improve charge-carrier transport. The AgNWs in this study can reduce the resistance of SLG from 650 Ω/◻ to 27 Ω/◻ yet still maintain a transmittance of 86.7% (at 550 nm). Flexible organic light-emitting diode, with a maximum 15000 cd m−2 luminance was successfully fabricated using such graphene and AgNWs composite transparent electrodes.

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