Document Detail


Charge carrier trapping and enhanced electroluminescent efficiency of blue light emitting polymer with gold nanoparticles.
MedLine Citation:
PMID:  19908807     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
We investigated the current injection, transport, and luminous efficiency behavior of organic light emitting diode (OLED) containing the 5-10 nm-sized gold particles mixed in the polyfluorene-type copolymer. This nanoparticle-conjugated polymer mixture layer was used as hole injection, transport, and light emitting layer for various structures of OLED based on the phosphorescent and fluorescent emitters. Due to the hole trapping at the nanopaticle, carrier injection is significantly reduced while the hole transport behavior is found to be barely affected. Hole trapping of nanoparticle in light emitting layer (at 4.7 approximately 9.4 x 10(-5) w/w fraction) resulted in an enhancement of efficiency (from 5.23 cd/A to 6.50 cd/A). The existence of the outcoupling effect also supports the carrier trapping behavior, which is amended mechanism of the improved efficiency compared to previously reported mechanism of enhanced photoluminescent stability by a hindrance of photo-oxidation.
Authors:
Jong Hyeok Park; Yu-Ri Choi; Byung Doo Chin
Related Documents :
9319277 - Neural mechanisms of adaptive gain control in a joint control loop: muscle force and mo...
21187807 - Systematic review of flexor tendon rehabilitation protocols in zone ii of the hand.
3560097 - Pressure related changes in human lumbosacral zygapophyseal joint articular cartilage.
12140437 - Detection of a novel pigment network feature in reticulated black solar lentigo by high...
25402037 - Ultra-thin circular polarization analyzer based on the metal rectangular split-ring res...
11067977 - Ocular pursuit responses to repeated, single-cycle sinusoids reveal behavior compatible...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of nanoscience and nanotechnology     Volume:  9     ISSN:  1533-4880     ISO Abbreviation:  J Nanosci Nanotechnol     Publication Date:  2009 Dec 
Date Detail:
Created Date:  2009-11-13     Completed Date:  2009-12-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088195     Medline TA:  J Nanosci Nanotechnol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7451-5     Citation Subset:  -    
Affiliation:
Department of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Korea.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Dual phase TiO(x)N(y)/TiN charge trapping layer for low-voltage and high-speed flash memory applicat...
Next Document:  The effect of additives and nanoparticles on falling film absorption performance of binary nanofluid...