Tuning the Emitting Color of Organic Light-Emitting Diodes Through Photochemically Induced Transformations: Towards Single-Layer, Patterned, Full-Color Displays and White-Lighting Applications

Full color displays (white OLEDs) require all the primary colors: blue, green, and red. In recent decades, numerous phenanthroimidazole-based emitting materials have been developed for efficient blue OLEDs.

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Determination of the exciton singlet-to-triplet ratio in single-layer organic light-emitting diodes

Physical Review B ◽

10.1103/physrevb.83.075203 ◽

2011 ◽

Vol 83 (7) ◽

Cited By ~ 20

Author(s):

M. Carvelli ◽

R. A. J. Janssen ◽

R. Coehoorn

Keyword(s):

Light Emitting Diodes ◽

Single Layer ◽

Organic Light Emitting Diodes ◽

Light Emitting ◽

Organic Light

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Efficient single layer RGB phosphorescent organic light-emitting diodes

Organic Electronics ◽

10.1016/j.orgel.2009.06.002 ◽

2009 ◽

Vol 10 (6) ◽

pp. 1146-1151 ◽

Cited By ~ 37

Author(s):

Zhiwei Liu ◽

Michael G. Helander ◽

Zhibin Wang ◽

Zhenghong Lu

Keyword(s):

Light Emitting Diodes ◽

Single Layer ◽

Organic Light Emitting Diodes ◽

Light Emitting ◽

Organic Light

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Numerical simulations of the electrical characteristics and the efficiencies of single-layer organic light emitting diodes

Journal of Applied Physics ◽

10.1063/1.369373 ◽

1999 ◽

Vol 85 (10) ◽

pp. 7426-7432 ◽

Cited By ~ 145

Author(s):

G. G. Malliaras ◽

J. C. Scott

Keyword(s):

Numerical Simulations ◽

Light Emitting Diodes ◽

Single Layer ◽

Organic Light Emitting Diodes ◽

Electrical Characteristics ◽

Light Emitting ◽

Organic Light

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3,6-Di(9-carbazolyl)-9-(2-ethylhexyl)carbazole based single-layer blue organic light emitting diodes

Synthetic Metals ◽

10.1016/j.synthmet.2011.04.035 ◽

2011 ◽

Vol 161 (13-14) ◽

pp. 1343-1346 ◽

Cited By ~ 22

Author(s):

V.V. Cherpak ◽

P.Y. Stakhira ◽

D.Yu. Volynyuk ◽

J. Simokaitiene ◽

A. Tomkeviciene ◽

...

Keyword(s):

Light Emitting Diodes ◽

Single Layer ◽

Organic Light Emitting Diodes ◽

Light Emitting ◽

Organic Light

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Phenanthroimidazole-Based Organic Fluorophores for Organic Light-Emitting Diodes

Emerging Synthesis Techniques for Luminescent Materials - Advances in Chemical and Materials Engineering ◽

10.4018/978-1-5225-5170-6.ch009 ◽

2018 ◽

pp. 305-388

Author(s):

Sivakumar Vaidyanathan ◽

Jairam Tagare

Keyword(s):

Light Emitting Diodes ◽

Molecular Design ◽

Organic Light Emitting Diodes ◽

Energy Utilization ◽

Light Emitting ◽

Design And Synthesis ◽

Organic Light ◽

Color Displays ◽

Host Materials ◽

Yellow Orange

Considering the imminent global energy crisis and inefficient energy utilization, energy-efficient organic light-emitting diodes (OLEDs) are considered one of the most competitive candidates for displays and particularly for future energy-saving lighting sources. Full color displays require all primary colors: red, green, and blue (RGB). In recent decades, numerous phenanthroimidazole (PI) RGB-emitting materials have been developed for efficient OLEDs. In organic electronics, considerable interest is shown on PI, due to ease in fluorophore modification. This chapter focuses on the design and synthesis of PI-based materials and their applications in OLEDs. At first, some nondoped blue, green, and yellow fluorescent materials are comprehensively studied. Then attention has been paid for typical blue, green, yellow, orange, and red PhOLEDs of PI-based fluorophores as a host materials are briefly presented. The molecular design concept, general synthetic routes for PI materials, and the applications of fluorophores in fluorescent OLEDs and host materials in PhOLEDs are reviewed.

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Top emitting white organic light emitting diodes towards full color organic microdisplay

Chinese Journal of Liquid Crystals and Displays ◽

10.3788/yjyxs20153005.0790 ◽

2015 ◽

Vol 30 (5) ◽

pp. 790-795

Author(s):

武明珠 WU Ming-zhu ◽

郭闰达 GUO Run-da ◽

张振松 ZHANG Zhen-song ◽

岳守振 YUE Shou-zhen ◽

曲加伟 QU Jia-wei ◽

...

Keyword(s):

Light Emitting Diodes ◽

Organic Light Emitting Diodes ◽

Light Emitting ◽

Full Color ◽

Organic Light

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Highly Efficient Single-Layer Phosphorescent Organic Light-Emitting Diodes Based on Co-Host Structure

Materials ◽

10.3390/ma13092029 ◽

2020 ◽

Vol 13 (9) ◽

pp. 2029

Author(s):

Tianyu Zhang ◽

Asu Li ◽

Ren Sheng ◽

Mingyang Sun ◽

Ping Chen

Keyword(s):

High Efficiency ◽

Light Emitting Diodes ◽

Single Layer ◽

Charge Carriers ◽

Organic Light Emitting Diodes ◽

Superior Performance ◽

Light Emitting ◽

Organic Light ◽

Exciton Recombination ◽

Host Structure

High-efficiency single-layer organic light-emitting diodes (OLEDs) based on a simple structure doped with iridium(III) bis(4-phenylthieno[3,2-c]pyridinato-N,C2′) acetylacetonate (PO-01) as emission dyes are realized, achieving maximum current efficiency (CE) and power efficiency (PE) of 37.1 cd A−1 and 33.3 lm W−1 as well as low turn-on voltage of 3.31 V. Such superior performance is mainly attributed to the employment of a uniform co-host structure and assisted charge transport property of phosphors dyes, which were in favor of the balance of charge carrier injection and transport in the single emitting layer (EML). Moreover, systematic researches on the position of exciton recombination region and the dopant effect on charge carriers were subsequently performed to better understand the operational mechanism. It could be experimentally found that the orange emitting dopants promoted the acceleration of the charge carriers transport and raised the exciton recombination efficiency, eventually leading to an excellent performance of single-layer OLEDs.

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