relation: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/145/
title: Enhancement of Current-Voltage Characteristics of Multilayer Organic Light Emitting Diodes by using Nanostructured Composite Films
creator: Nguyen, Nang Dinh
creator: Le, Ha Chi
creator: Tran, Thi Chung Thuy
creator: Tran, Quang Trung
creator: Vo, Van Truong
description: 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 Poly2-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.
date: 2009
type: Article
type: PeerReviewed
identifier:   Nguyen, Nang Dinh and Le, Ha Chi and Tran, Thi Chung Thuy and Tran, Quang Trung and Vo, Van Truong  (2009) Enhancement of Current-Voltage Characteristics of Multilayer Organic Light Emitting Diodes by using Nanostructured Composite Films.  Journal of Applied Physics, 105  (9).   093518-093518.