Cited 2 time in webofscience Cited 2 time in scopus

Two-Dimensional TiO2 Honeycomb Structure for Enhanced Light Extraction from Polymer Light-Emitting Diodes

Title
Two-Dimensional TiO2 Honeycomb Structure for Enhanced Light Extraction from Polymer Light-Emitting Diodes
Authors
Hyun, WJ[Hyun, Woo Jin]Lee, HK[Lee, Hang Ken]Im, SH[Im, Sang Hyuk]Park, OO[Park, O. Ok]
DGIST Authors
Park, OO[Park, O. Ok]
Issue Date
2014-11
Citation
Journal of Nanoscience and Nanotechnology, 14(11), 8411-8415
Type
Article
Article Type
Article
Keywords
Colloidal CrystalColloidal CrystalsHoneycomb StructureHoneycomb StructuresLight ExtractionPolymer Light-Emitting Diode (PLED)Polymer Light-Emitting DiodesSol-GelSol-Gel ProcessTiO
ISSN
1533-4880
Abstract
We have demonstrated the preparation of an ordered hole pattern via a simple colloidal assembly technique and a sol-gel process without the use of any special equipment to enhance light extraction from polymer light-emitting diodes (LEDs). From two-dimensional (2D) polystyrene (PS) colloidal crystals, 2D TiO2 honeycomb structures were easily obtained after depositing TiOx sol solution onto the colloidal crystals by a doctor blade technique and removing the PS colloidal particles. In order to optimize the thickness of the deposited TiOx materials for fabricating 2D TiO2 honeycomb structures, the concentration of the TiOx sol solution was controlled. By applying the 2D TiO2 honeycomb structure on the backside of the glass substrate, the efficiency of a polymer LED, compared to the device without the structure, was increased without a significant change in the electroluminescence spectrum. This enhancement is attributed to the improved light extraction, which is due to the suppression of total internal reflection at the interface between the glass substrate and the air. © 2014 American Scientific Publishers.
URI
http://hdl.handle.net/20.500.11750/2373
DOI
10.1166/jnn.2014.9909
Publisher
American Scientific Publishers
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringETC1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE