A New Method for OLED Optical Output Simulation

2011 ◽  
Vol 110-116 ◽  
pp. 3389-3393
Author(s):  
Yan Mei Xu ◽  
Chong Liu
Keyword(s):  
Optical Transmission ◽  
Light Emission ◽  
Light Output ◽  
New Method ◽  
Theoretic Analysis ◽  
Light Emitting ◽  
Organic Light ◽  
Optical Output ◽  
Calculated Curve ◽  
Cie Coordinates

In the paper a new method is presented to simulate the course of light output from organic light emitting device. The method uses optical transmission matrix to deal with multiple layers. To confirm the validity of our theories, a comparison of the theoretic analysis with testing results is given. The calculated curve consistented with the experimental value. By this methoed the Commission Internationale de L'Eclairage （CIE） coordinates of device were simulated. By adjusting the thickness of each layer in organic light emission diode (OLED) we obtained different CIE coordinates. When thickness becomes thicker the CIEX becomes bigger on the other hand CIEY become smaller.

Numerical Model of Organic Light Emitting Device with Different Thickness

2010 ◽  
Vol 44-47 ◽  
pp. 1758-1762
Author(s):  
Yan Mei Xu ◽  
Chong Liu ◽  
Zhi Ping Yang
Keyword(s):  
Numerical Model ◽  
Optical Transmission ◽  
Transmission Matrix ◽  
Theoretic Analysis ◽  
Light Emitting ◽  
Organic Light ◽  
Cie Coordinates ◽  
Different Thickness

In the paper a new OLED is provided. By adjusting the thickness of each layer in OLED the peak spectral wavelength moves to red. To explain the phenomenon a new simulation is presented to research the relation between thickness of the layer and their CIE coordinates. We use optical transmission matrix to deal with multiple layers. As a result, we obtain the relationships between the CIE coordinates of the device and the thickness of each layerIn this paper, we provide such a theoretic analysis.

scholarly journals Improved Light Output Power of Chemically Transferred InGaN/GaN Light-Emitting Diodes for Flexible Optoelectronic Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Ho-Jun Lee ◽  
Jung-Wook Min ◽  
Kye-Jin Lee ◽  
Kwang-Yong Choi ◽  
Jung-Hyun Eum ◽  
...  
Keyword(s):  
Output Power ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
Light Output ◽  
High Quantum Efficiency ◽  
Light Emitting ◽  
Organic Hybrid ◽  
Optical Output ◽  
Chip Processing ◽  
Stable Current

Recent needs of semiconductor lighting sources have pursued diverse functionalities such as flexibility and transparency under high quantum efficiency. Inorganic/organic hybrid light-emitting diodes (LEDs) are one way to meet these requirements. Here, we report on flexible III-nitride-based LEDs and the improvement of their electrical and optical properties. To realize high light emission power and stable current operation, high-quality epitaxy and elaborate chip processing were performed. The fabricated flexible LEDs showed over threefold optical output power compared to normal LEDs on Si and had comparable forward voltage and series resistances.

Identification of White Light Emission with Two Complementary Colors in Organic Light-Emitting Devices

2011 ◽  
Vol 284-286 ◽  
pp. 2157-2160
Author(s):  
Jun Wang ◽  
Ya Dong Jiang ◽  
Jun Sheng Yu
Keyword(s):  
White Light ◽  
Light Emission ◽  
Simple Method ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Light Region ◽  
Cie Coordinates ◽  
Light Color ◽  
Emission Light

Simple method of determining emission light color in organic light-emitting diodes (OLEDs) with two emissive materials from their electroluminescent (EL) spectra has been presented. The Commission Internationale de l'Eclairage (CIE) coordinates and two EL intensity rates of OLEDs can be simulated with this method. White light OLEDs were fabricated with a blue light emission from 4,4'-bis[N-1-napthyl-N-phenyl-amino]biphenyl (NPB) and a yellow light emission from bis[2-(4-tert-butylphenyl)benzothiazolato-N,C2’]iridium (acetylacetonate) [(t-bt)2Ir(acac)], and the device shows the CIE coordinates of (0.34, 0.32) at 10 V bias, which located in white light region.

scholarly journals Luminescent zinc(ii) and copper(i) complexes for high-performance solution-processed monochromic and white organic light-emitting devices

2015 ◽  
Vol 6 (8) ◽  
pp. 4623-4635 ◽  
Author(s):  
Gang Cheng ◽  
Gary Kwok-Ming So ◽  
Wai-Pong To ◽  
Yong Chen ◽  
Chi-Chung Kwok ◽  
...  
Keyword(s):  
High Performance ◽  
Platinum Group Metals ◽  
Solution Processed ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Cie Coordinates ◽  
Organic Light Emitting Devices ◽  
Platinum Group

High performance orange (EQE up to 15.64%) and white (EQE up to 6.88%) solution processed OLEDs fabricated solely with emitters of non-platinum group metals were reported. The white device has CIE coordinates of (0.42, 0.44) and CRI of 81.

Power-efficient solution-processed red organic light-emitting diodes based on an exciplex host and a novel phosphorescent iridium complex

2016 ◽  
Vol 4 (24) ◽  
pp. 5787-5794 ◽  
Author(s):  
Xuejing Liu ◽  
Bing Yao ◽  
Zilong Zhang ◽  
Xiaofei Zhao ◽  
Baohua Zhang ◽  
...  
Keyword(s):  
Power Efficiency ◽  
Efficient Solution ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Iridium Complex ◽  
Solution Processed ◽  
Power Efficient ◽  
Light Emitting ◽  
Organic Light ◽  
Cie Coordinates

A novel red heteroleptic iridium complex, Ir(DPA-Flpy-CF3)2acac, was synthesized and whose corresponding solution-processed PhOLED shows a record power efficiency of 44.5 lm W−1 with CIE coordinates of (0.64, 0.36).

Transfer Printing Method to Obtain Polarized Light Emission in Organic Light-Emitting Device

2012 ◽  
Vol 51 ◽  
pp. 06FJ03
Author(s):  
Hee Yeon Noh ◽  
Chang-sub Park ◽  
Ji-Sub Park ◽  
Shin-Won Kang ◽  
Hak-Rin Kim
Keyword(s):  
Light Emission ◽  
Polarized Light ◽  
Transfer Printing ◽  
Light Emitting ◽  
Organic Light ◽  
Printing Method
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