Results 151 to 160 of about 72,380 (184)
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Nanoscale Organic Light-Emitting Diodes
Nano Letters, 2005This study reports the fabrication and characterization of nanoscale organic light-emitting diodes (nano-OLEDs) based on poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene] (MEH-PPV). The nano-OLEDs were fabricated by spin casting MEH-PPV into cylindrical nanoholes lithographically patterned into silicon nitride.
Hiromichi, Yamamoto +5 more
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Photoprogrammable Organic Light‐Emitting Diodes
Angewandte Chemie, 2009AbstractLicht im Speicher: Der Einbau eines vernetzbaren photochromen Dithienylperfluorcyclopentens (DTE) in organische Leuchtdioden (OLEDs) ermöglicht die Individualisierung der Emissionsfläche, z. B. für die Anwendung in Anzeigeelementen. Das Arbeitsprinzip beruht auf dem Schalten der Injektionsbarriere für Löcher (positive Ladungsträger). Sehr große
Philipp, Zacharias +4 more
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Tandem Organic Light‐Emitting Diodes
Advanced Materials, 2016A tandem organic light‐emitting diode (OLED) is an organic optoelectronic device that has two or more electroluminescence (EL) units connected electrically in series with unique intermediate connectors within the device. Researchers have studied this new OLED architecture with growing interest and have found that the current efficiency of a tandem OLED
Man-Keung, Fung +2 more
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White Organic Light‐Emitting Diodes
Advanced Materials, 2010AbstractWhite organic light‐emitting diodes (WOLEDs) offer a range of attractive characteristics and are in several regards conceptually different from most currently used light sources. From an application perspective, their advantages include a high power efficiency that rivals the performance of fluorescent lamps and inorganic LEDs and the potential
Malte C, Gather +2 more
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Afterglow Organic Light‐Emitting Diode
Advanced Materials, 2015An afterglow organic light-emitting diode (OLED) that displays electroluminescence with long transient decay after it is turned off is demonstrated. This OLED exhibits blue and green dual emission originating from fluorescence and phosphorescence, respectively. A phosphorescence lifetime of 4.3 s is achieved.
Ryota, Kabe +3 more
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Proceedings of 8th International Conference on Indium Phosphide and Related Materials, 2002
Organic light emitting diodes with a complex multilayer structure have been successfully fabricated for bright light emission in the entire visible spectral region. The CIE coordinates of the blue, green, and red emitting electroluminescent devices are plotted in the chromaticity diagram. Double heterostructure organic LEDs with separate hole injection
W. Kowalsky +3 more
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Organic light emitting diodes with a complex multilayer structure have been successfully fabricated for bright light emission in the entire visible spectral region. The CIE coordinates of the blue, green, and red emitting electroluminescent devices are plotted in the chromaticity diagram. Double heterostructure organic LEDs with separate hole injection
W. Kowalsky +3 more
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Hybrid Organic–Inorganic Light‐Emitting Diodes
Advanced Materials, 2011AbstractThe 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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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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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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Biologically Inspired Organic Light-Emitting Diodes
Nano Letters, 2016Many 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 +6 more
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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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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 ...
openaire +3 more sources