Journal ArticleDOI
Bright organic electroluminescent devices having a metal-doped electron-injecting layer
Junji Kido,Toshio Matsumoto +1 more
TLDR
In this paper, a metal-doped organic layer was used as an electron-injecting layer at the interface between the cathode and the emitter layer of a bright organic electroluminescent device.Abstract:
Bright organic electroluminescent devices were developed using a metal-doped organic layer as an electron-injecting layer at the interface between the cathode and the emitter layer. The typical device structure is a glass substrate/indium-tin oxide/arylamine/tris(8-quinolinolato)Al (Alq)/metal-doped Alq/Al. Dopant metals are highly reactive metals such as Li, Sr, and Sm. A device with Li-doped Alq layer showed high luminance of over 30 000 cd/m2, while a device without the metal-doped Alq layer exhibited only 3400 cd/m2. These results suggest that the Li doping to the Alq layer generates the radical anions of Alq serving as intrinsic electron carriers, which result in low barrier height for electron injection and high electron conductivity of the Li-doped Alq layer.read more
Citations
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Journal ArticleDOI
The path to ubiquitous and low-cost organic electronic appliances on plastic
TL;DR: The future holds even greater promise for this technology, with an entirely new generation of ultralow-cost, lightweight and even flexible electronic devices in the offing, which will perform functions traditionally accomplished using much more expensive components based on conventional semiconductor materials such as silicon.
Journal ArticleDOI
The electroluminescence of organic materials
Ullrich Mitschke,Peter Bäuerle +1 more
TL;DR: A review about electroluminescence from organic materials and deals in detail with organic light-emitting diodes (OLEDs), lightemitting electrochemical cells (LECs) and electrogenerated chemilumi-nescence (ECL) reflecting different electrooptical appli-cations of conjugated materials as mentioned in this paper.
Journal ArticleDOI
Highly efficient organic devices based on electrically doped transport layers.
TL;DR: Most present-day semiconductor devices use inorganic crystalline materials, with single-crystalline silicon dominating other materials like GaAs by about a factor of 1000, but organic semiconductors have recently gained much attention and are already broadly applied as photoconductors for copiers and laser printers.
Patent
Organic light-emitting device
Yoon-Hyun Kwak,Seok-Hwan Hwang,Young-Kook Kim,Hye-jin Jung,Jong-hyuk Lee,Jin-O Lim,Hyung-Jun Song +6 more
TL;DR: In this paper, the authors presented a heterocyclic compound and an organic light-emitting device including the HOC compound, which have high efficiency, low driving voltage, high luminance and long lifespan.
Journal ArticleDOI
Recent Progresses on Materials for Electrophosphorescent Organic Light-Emitting Devices
TL;DR: Blue phosphorescence approaching the theoretical efficiency has also been achieved, which may overcome the final obstacle against the commercialization of full color display and white light sources from phosphorescent materials.
References
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Journal ArticleDOI
Organic Electroluminescent Diodes
Ching Wan Tang,Steven A Vanslyke +1 more
TL;DR: In this article, a double-layer structure of organic thin films was prepared by vapor deposition, and efficient injection of holes and electrons was provided from an indium-tinoxide anode and an alloyed Mg:Ag cathode.
Journal ArticleDOI
Electroluminescence of doped organic thin films
TL;DR: In this paper, a multilayer-doped EL was constructed using a hole-transport layer and a luminescent layer, and the electron-hole recombination and emission zones can be confined to about 50 A near the hole.
Journal ArticleDOI
Enhanced electron injection in organic electroluminescence devices using an Al/LiF electrode
TL;DR: In this article, an ultrathin LiF layer adjacent to an electron-transporting layer and an aluminum outerlayer was used as an electrode for organic electroluminescent devices.