Journal ArticleDOI
Organic electroluminescent devices with improved stability
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TLDR
In this article, a stable organic electroluminescent devices based on vapor-deposited Alq thin films have been achieved, which are derived from several factors including: (1) a multilayer thin-film structure with a CuPc stabilized hole-injection contact, (2) a hole-transport diamine layer using a naphthyl substituted benzidine derivative, and (3) an ac drive wave form.Abstract:
Highly stable organic electroluminescent devices based on vapor‐deposited Alq thin films have been achieved. The improvement in stability is derived from several factors including: (1) a multilayer thin‐film structure with a CuPc stabilized hole‐injection contact, (2) a hole‐transport diamine layer using a naphthyl‐substituted benzidine derivative, and (3) an ac drive wave form. These emissive devices have shown an operational half‐lifetime of about 4000 h from an initial luminance of 510 cd/m2.read more
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Journal ArticleDOI
Pulsed laser deposition of aluminum tris-8-hydroxyquinline thin films
TL;DR: Aluminum tris-8-hydroxyquinline (Alq 3 ) thin films have been successfully fabricated by 355 nm pulsed laser deposition as mentioned in this paper, and they are characterized via photoluminescence, X-ray diffraction and Fourier transform infrared spectroscopy.
Journal ArticleDOI
Solution-processable dendric triphenylamine nonamers as hole-transporting and hole-injection materials for organic light-emitting devices
Musubu Ichikawa,Kumiko Hibino,Norimasa Yokoyama,Tetsuzo Miki,Toshiki Koyama,Yoshio Taniguchi +5 more
TL;DR: In this article, two solution-processable triphenylamine dendric nonamers (TPA9-1 and TPA 9-2) were shown to have high glass transition temperature (T g ) up to almost 200°C.
Journal ArticleDOI
Operation lifetimes of organic light-emitting devices with different layer structures
TL;DR: In this paper, the authors analyzed the operation lifetime behaviors of organic light-emitting devices by changing thicknesses of the hole-transport layer (HTL), the emitting layer (EML) and the electron transport layer (ETL).
Journal ArticleDOI
Improvement of luminescence efficiency by electrical annealing in single-layer organic light-emitting diodes based on a conjugated dendrimer
TL;DR: In this article, the effects of electrical annealing at different voltages on the performance of organic light-emitting diodes were studied and it was shown that these devices can be annealed electrically by applying a voltage.
Patent
Red organic light emitting devices
TL;DR: An organic light emitting, or EL device containing a number of layers, and containing red emitting compounds or components is a type of EL device as discussed by the authors, which can be seen as a light-emitting device.