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
Citations
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Journal ArticleDOI
Influence of the substrate temperature during deposition on film characteristics of copper phthalocyanine and field-effect transistor properties
TL;DR: In this article, the authors employed different substrate temperatures during the deposition process and observed a highly ordered structure and strong orientation of copper phthalocyanine (CuPc) molecules on Si/SiO2 by using X-ray-diffraction and transmission electron microscopy analysis.
Journal ArticleDOI
Mixed host organic light-emitting devices with low driving voltage and long lifetime
TL;DR: In this paper, the authors presented and analyzed the performance of the mixed host organic light-emitting devices (OLEDs) with a high mobility electron ETL material, bis(10-hydroxybenzo[h]qinolinato)beryllium, and showed a brightness of 27600cd∕m2 at a driving voltage of 5 V.
Patent
Phosphorescent emitters and host materials with improved stability
Chuanjun Xia,Walter Yeager,Bin Ma,Scott Beers,Jui-Yi Tsai,James Fiordeliso,Edward Barron,Chun Lin +7 more
TL;DR: Iridium complexes with ligands containing twisted aryl groups having extended conjugation and organic light emitting devices including the same are disclosed in this article, which may provide improved stability color, lifetime and manufacturing.
Journal ArticleDOI
Synthesis of conjugated-bridged triphenylenes and application in OLEDs
TL;DR: In this article, a conjugated-bridged triphenylene derivatives with electroluminescent properties were synthesized and used as emissive layer in organic light-emitting diodes (OLEDs), both in single and double layer arrangements with copper phthalocyanine as the hole transport layer.
Reference BookDOI
OLED fundamentals : materials, devices, and processing of organic light-emitting diodes
TL;DR: In this paper, the authors discuss the role of host materials for high efficiency organic light-emitting devices (OLED) and propose a host material for OLED devices, including transparent electrodes and charge injection layers.