Finite Element Analysis on the Electrical and Optical Properties in HTL/mCP/ETL Multilayer Organic Light Emitting Diode Device Structure

2014 ◽  
Vol 14 (8) ◽  
pp. 5798-5801 ◽  
Author(s):  
Young Wook Hwang ◽  
Tae Young Won
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optical Properties ◽  
Light Emitting Diode ◽  
Device Structure ◽  
Electrical And Optical Properties ◽  
Element Analysis ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light

Three types of charged ligands based neutral phosphorescent iridium(III) complexes featuring nido-carborane: synthesis, structures, and solution processed organic light-emitting diode application

2021 ◽  
Author(s):  
Qiuxia Li ◽  
Chao Shi ◽  
Manli Huang ◽  
Xinghua Zhang ◽  
Fangxiang Sun ◽  
...  
Keyword(s):  
Optical Properties ◽  
Functional Groups ◽  
Light Emitting Diode ◽  
Iridium Complexes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Coordination Configuration ◽  
Charged Ligands

In view of the fact that coordination configuration and special functional groups are both important for the optical properties of phosphorescent iridium complexes materials, we have prepared a novel family...

scholarly journals Optical Properties of Polystyrene-ZnO Nanocomposite Scattering Layer to Improve Light Extraction in Organic Light-Emitting Diode

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
G. Nenna ◽  
A. De Girolamo Del Mauro ◽  
E. Massera ◽  
A. Bruno ◽  
T. Fasolino ◽  
...  
Keyword(s):  
Optical Properties ◽  
Light Emitting Diode ◽  
Light Extraction ◽  
Radiative Transfer Model ◽  
Transfer Model ◽  
Experimental Measurements ◽  
Scattering Layer ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light

In this work, experimental measurements on polystyrene-ZnO nanocomposite scattering films and on organic light-emitting device with and without the scattering layers are presented. The results are also compared with Henyey-Greenstein radiative-transfer model to narrow down the parameters that can be important in the identification of more suitable scattering layers. As a result, an increase of efficiency of about 30% has been obtained that it can be translated in 60% of outcoupled light in respect to the total generated amount.

A hybrid white organic light-emitting diode with above 20% external quantum efficiency and extremely low efficiency roll-off

2014 ◽  
Vol 2 (36) ◽  
pp. 7494-7504 ◽  
Author(s):  
Ning Sun ◽  
Qi Wang ◽  
Yongbiao Zhao ◽  
Dezhi Yang ◽  
Fangchao Zhao ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diode ◽  
Structure Design ◽  
Device Structure ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Low Efficiency

Based on a delicate device structure design, a novel (phosphorescence/fluorescence) hybrid WOLED with nearly 100% exciton harvesting has been demonstrated.

scholarly journals Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting Layers

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Chun-Hong Gao ◽  
Xiao-Bo Shi ◽  
Dong-Ying Zhou ◽  
Lei Zhang ◽  
Zhao-Kui Wang ◽  
...  
Keyword(s):  
Power Efficiency ◽  
Carrier Transport ◽  
Layer Structure ◽  
Light Emitting Diode ◽  
Device Structure ◽  
Emission Layer ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Highly Efficient ◽  
Organic Light

A highly efficient hybrid white organic light-emitting diode (HWOLED) has been demonstrated with a mixed interlayer between fluorescent blue and phosphorescent yellow-emitting layers. The device structure is simplified by using a controllable fluorescence-mixed interlayer-phosphorescence emission layer structure. The electroluminance (EL) performance can be modulated easily by adjusting the ratio of the hole-predominated material to the electron-predominated material in the interlayer. It is found that the HWOLED with a ratio of 3 : 2 exhibits a current efficiency of 34 cd/A and a power efficiency of 29 lm/W at 1000 cd/m2with warm white Commission Internationale de l’Eclairage (CIE1931) coordinates of (0.4273, 0.4439). The improved efficiency and adaptive CIE coordinates are attributed to the controllable mixed interlayer with enhanced charge carrier transport, optimized excitons distribution, and improved harvestings of singlet and triplet excitons.

Hybrid White Quantum Dot-Organic Light-Emitting Diodes with Highly Stable CIEx,y Coordinates by Introduction of n-Type Modulation and Multi-Stacked Hole Transporting Layer

2021 ◽  
Author(s):  
Hakjun Lee ◽  
Seung-Won Song ◽  
Kyo Min Hwang ◽  
Ki Ju Kim ◽  
Heesun Yang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Emitting Diode ◽  
Organic Light Emitting Diodes ◽  
Device Structure ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Device Architecture ◽  
Organic Light ◽  
Hole Transporting ◽  
Novel Concept

Extremely stable white emission out of a hybrid white quantum dot-organic light-emitting diode (WQD-OLED) was achieved by developing a novel concept of device architecture. The new inverted device structure employs...

scholarly journals Investigation of Efficient Hole Injection Layer for Enhancement of Opto-Electrical Properties of an Organic Light Emitting Diode

2021 ◽  
Vol 2062 (1) ◽  
pp. 012025
Author(s):  
Neha Jain ◽  
Vikas Singh ◽  
Vivek Prajapati
Keyword(s):  
Current Density ◽  
Light Emitting Diode ◽  
Hole Injection ◽  
Electrical And Optical Properties ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Hole Injection Layer ◽  
Organic Light ◽  
Electroluminescence Intensity ◽  
The Given

Abstract A multilayer Organic Light Emitting Diode (OLED) has been simulated and analysed for the investigation of an efficient Hole Injection Layer (HIL). Study includes the simulation of different devices which comprises of the different materials as HIL. Three devices have been simulated and their characteristics have been extracted to compare the electrical and optical properties of the OLEDs. It has been found that the device with HAT-CN as HIL has achieved the highest value of the current at the mentioned applied voltage and hence the current density. There is drastic enhancement in the current density of the device when an HIL is inserted in comparison to when it is not used in the OLED. Also, there is an approximate enhancement of around 20% in the device performance when HIL is changed from MoO3 to HAT-CN. The device without any HIL included has the highest electric field at the given voltage. Optical characteristics of the device includes Electroluminescence Intensity with respect to the varying wavelength and it has been observed that OLED achieved the maximum light intensity at an approximate wavelength of around 320 nm.

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