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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Thickness dependent device characteristics of sandwich polymer light-emitting electrochemical cell
Xiaoyu Li,Jun Gao,Guojun Liu +2 more
TL;DR: In this article, the active layer thickness of a polymer light-emitting electrochemical cell (LEC) was compared to a PLED, and it was shown that the thickness can strongly influence several key LEC performance parameters such as maximum luminance, current efficiency, and operating lifetime.
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A new generation of high‐efficiency red‐emitting electroluminescent devices with exceptional stability
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Diffusion – the Hidden Menace in Organic Optoelectronic Devices
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Journal ArticleDOI
Enhanced lifetime of organic light-emitting diodes using soluble tetraalkyl-substituted copper phthalocyanines as anode buffer layers
TL;DR: In this paper, two soluble tetraalkyl-substituted copper phthalocyanines (CuPcs) are used as hole-blocking materials that can be used in the Alq3-based organic light-emitting diodes (OLEDs).
Journal ArticleDOI
Electroluminescent characteristics of OLEDs fabricated with bis(5,7-dichloro-8-hydroxyquinolinato)zinc(II) as light emitting material
Anita Sharma,Devender Singh,J.K. Makrandi,Modeeparampil N. Kamalasanan,Ritu Shrivastva,Ishwar Singh +5 more
TL;DR: In this paper, a 1:2 (M:L) metal chelate has been described, which has a strong photoluminescence emitting maximum at 509 nm in solid state.