Login | Register

Enhancement of current-voltage characteristics of multilayer organic light emitting diodes by using nanostructured composite films

Title:

Enhancement of current-voltage characteristics of multilayer organic light emitting diodes by using nanostructured composite films

Dinh, Nguyen Nang, Chi, Le Ha, Chung Thuy, Tran Thi, Trung, Tran Quang and Truong, Vo-Van ORCID: https://orcid.org/0000-0003-3535-3749 (2009) Enhancement of current-voltage characteristics of multilayer organic light emitting diodes by using nanostructured composite films. Journal of Applied Physics, 105 (9). ISSN 00218979

[thumbnail of Enhancement_of_current-voltage_characteristics.pdf]
Preview
Text (application/pdf)
Enhancement_of_current-voltage_characteristics.pdf - Published Version
595kB

Official URL: http://dx.doi.org/10.1063/1.3117518

Abstract

With the aim of improving the photonic efficiency of an organic light emitting diode (OLED) and its display duration, both the hole transport layer (HTL) and the emitting layer (EL) were prepared as nanostructured thin films. For the HTL, nanocomposite films were prepared by spin-coating a homogeneous solution of low molecular weight poly(4-styrenesulfonate) (PEDOT-PSS) and surfactant-capped TiO2 nanocrystals onto low resistivity indium tin oxide (ITO) substrates; for the EL, nancrystalline titatium oxide (nc-TiO2)-embedded Poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV+nc-TiO2) conjugate polymers were spin-coated onto the HTL. Also, for a shallow contact of Al/LiF/MEH-PPV instead of Al/MEH-PPV a super LiF thin film was deposited onto the EL by vacuum evaporation. The resulting multilayer OLED had the following structure of Al/LiF/MEH-PPV+nc-TiO2/PEDOT-PSS+nc-TiO2/ITO. Characterization of the nanocomposite films showed that both the current-voltage (I-V) characteristics and the photoluminescent properties of the nanocomposite materials were significantly enhanced in comparison with the standard polymers. OLEDs made from these layers would exhibit a large photonic efficiency.

Divisions:Concordia University > Faculty of Arts and Science > Physics
Item Type:Article
Refereed:Yes
Authors:Dinh, Nguyen Nang and Chi, Le Ha and Chung Thuy, Tran Thi and Trung, Tran Quang and Truong, Vo-Van
Journal or Publication:Journal of Applied Physics
Date:2009
Digital Object Identifier (DOI):10.1063/1.3117518
ID Code:974569
Deposited By: KATHARINE HALL
Deposited On:17 Aug 2012 16:28
Last Modified:18 Jan 2018 17:38
All items in Spectrum are protected by copyright, with all rights reserved. The use of items is governed by Spectrum's terms of access.

Repository Staff Only: item control page

Downloads per month over past year

Research related to the current document (at the CORE website)
- Research related to the current document (at the CORE website)
Back to top Back to top