Enhanced color purity and stability from polymer/nanoporous silica nanocomposite blue light-emitting diodes

Photo-oxidation plays an important role in the lifetime of PLEDs fabricated from PFs. In addition, most of these PLEDs suffer from a degradation of the device under operation; the degradation is documented in the formation of a low-energy emission band at 2.2–2.3 eV, which turns the desired blue emi...

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Bibliographic Details
Published in:Synthetic metals 2005-09, Vol.154 (1), p.145-148
Main Authors: Park, Jong Hyeok, Kim, Tae-Ho, Yu, Jae-Woong, Kim, Jai Kyeong, Kim, Young Chul, Park, O. Ok
Format: Article
Language:English
Subjects:
Application fields
Applied sciences
Electronics
Exact sciences and technology
Light sources
Optoelectronic devices
Organic/inorganic interfaces
Polymer industry, paints, wood
Semiconducting films
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Technology of polymers
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Summary:Photo-oxidation plays an important role in the lifetime of PLEDs fabricated from PFs. In addition, most of these PLEDs suffer from a degradation of the device under operation; the degradation is documented in the formation of a low-energy emission band at 2.2–2.3 eV, which turns the desired blue emission color into an undesired blue-green emission. With the aim of simultaneously overcoming all these drawbacks, a blue light-emitting polymer/mesoporous silica nanocomposite was prepared by blending poly(9,9-dioctylfluorene) with surface modified nanoporous silica. This nanocomposite film shows dramatically increased photo-stability and color purity.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2005.07.037