Results 161 to 170 of about 17,615 (204)

Organic light emitting diodes

Solid State Communications, 1997
Organic light emitting diode (LED) technology has reached a point where performance levels are adequate for a number of applications. This review examines the key scientific issues that underlie the operation of such LEDs. The most advanced LEDs are multilayer devices, with the different layers possessing specialized carrier transport/optical ...
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Electrode modification in organic light-emitting diodes

Displays, 2006
The rapid development of organic light-emitting diodes (OLEDs) in the past decades has exhibited a promising prospect in commercial application. In order to achieve more satisfying results, a lot of new materials and methods have been used in fabricating OLEDs.
Xinjun Xu, Gui Yu, Yunqi Liu, Daoben Zhu
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Hybrid Organic–Inorganic Light‐Emitting Diodes

Advanced Materials, 2011
AbstractThe demonstration of colour tunability and high efficiency has brought organic light‐emitting diodes (OLEDs) into the displays and lighting market. However, high production costs due to expensive deposition techniques and the use of reactive materials still limit their market entry, highlighting the need for novel concepts.
Michele, Sessolo, Henk J, Bolink
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Biologically Inspired Organic Light-Emitting Diodes

Nano Letters, 2016
Many animal species employ highly conspicuous traits as courtship signals for successful mating. Fireflies utilize their bioluminescent light as visual courtship signals. In addition to efficient bioluminescent light emission, the structural components of the firefly lantern also contribute to the enhancement of conspicuous optical signaling. Recently,
Jae-Jun, Kim, Jaeho, Lee, Sung-Pyo, Yang, Ha Gon, Kim, Hee-Seok, Kweon, Seunghyup, Yoo, Ki-Hun, Jeong   +6 more
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Dissociation of excitons in organic light-emitting diodes

Microelectronics Journal, 2007
In this paper, the dissociation of excitons in both doped and undoped organic light-emitting diodes is investigated in detail by means of electric-field-induced photoluminescence quenching. The results show that the doped devices demonstrate lower quenching than that of undoped device.
Jin Zhao Huang, Zheng Xu, Fujun Zhang 0003, Su Ling Zhao, Yuan Li, Lin Song, Xu Rong Xu   +6 more
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Dendritic macromolecules for organic light-emitting diodes

Chemical Society Reviews, 2008
The general concepts, design criteria, and physical parameters, such as component placement and electroluminescence, that relate to the construction of OLED devices are described, followed by a discussion of the current literature detailing the use of branched and dendritic materials as the key electroluminescent elements of single- and multi-layered ...
Seok-Ho, Hwang, Charles N, Moorefield, George R, Newkome   +2 more
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Degradation mechanisms in organic light emitting diodes

Synthetic Metals, 2000
Lifetime measurement results on organic light emitting diodes (OLEDs) are presented and analyzed. The drive voltage tends to increase and the luminance tends to decrease with operating time. Upon the reversal of the polarity of the external field, the voltage trends are reversed almost completely and the luminance trends undergo weak changes.
Shen, Jun, Wang, D., Langlois, E., Barrow, William A., Green, Patrick J., Tang, Ching Wan, Shi, Jianmin   +6 more
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Organic Light Emitting Diodes

2012
Introduction, Luiz Pereira The Organic Light Emitting Devices: The basics, Luiz Pereira Measuring the Optical and Electrical Properties of OLEDs, Luiz Pereira Rare Earth Complexes: The Search for Quasi-Monochromatic OLEDs, Luiz Pereira Transition Metal Complexes: The Path to High Brightness OLEDs, Luiz Pereira Synthesis of Light emitting Complexes ...
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Blue light emitting naphthalimides for organic light emitting diodes

AIP Conference Proceedings, 2013
The photophysical, electrochemical, surface morphology and thermal properties of two novel blue lightemitting materials were studied. Results indicate that the molecules offer potential as non-doping light-emitting materials with good electron injection capabilities for fabrication of blue organic light-emitting diodes.
Hidayath Ulla, B. Garudachar, M. N. Satyanarayan, G. Umesh, A. M. Isloor   +4 more
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Organic light emitting diodes.

2004
A method of fabricating an OLED element or display having two or more OLED layers is described entailing providing a blocking layer by printing with an ink in a desired pattern between two of the OLED layers, whereby, in use, conduction across the OLED element or display is reduced in the area of the pattern, wherein the ink is colored to increase ...
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