Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/3199
Title: Effect of oxygen on the electrical characteristics of PPV-LEDs
Authors: MANCA, Jean 
Bijnens, W
KIEBOOMS, Rafael
D'HAEN, Jan 
D'OLIESLAEGER, Marc 
WU, Ting-Di
DE CEUNINCK, Ward 
DE SCHEPPER, Luc 
VANDERZANDE, Dirk 
GELAN, Jan 
STALS, Mark 
Issue Date: 1998
Publisher: ELSEVIER SCIENCE BV
Source: OPTICAL MATERIALS, 9(1-4). p. 134-137
Abstract: The presence of oxygen in the surrounding atmosphere exerts an important influence on the electro-optical characteristics and the degradation behaviour of organic electroluminescent Al-PPV-ITO-diodes. Experiments in various gas atmospheres show that the devices possess gas sensing properties. For particular gas compositions the current-voltage (IV)-characteristics feature negative resistance sections in the form of anomalous bumps superimposed on Shockley-like diode characteristics. A new interpretation is provided for the memory switch phenomena related to these anomalous electrical characteristics. The gas sensor like behaviour and the increase in conductivity in an oxygen free ambient is believed to be related to the formation of localized Ohmic paths. The growth of these Ohmic paths is inhibited by oxidation and the paths can melt due to excessive joule heating. (C) 1998 Elsevier Science B.V.
Notes: Limburgs Univ Ctr, Inst Mat Res, B-3590 Diepenbeek, Belgium.Manca, J, Limburgs Univ Ctr, Inst Mat Res, Wetenschapspk, B-3590 Diepenbeek, Belgium.
Document URI: http://hdl.handle.net/1942/3199
DOI: 10.1016/S0925-3467(97)00094-3
ISI #: 000072743500024
Type: Journal Contribution
Validations: ecoom 1999
Appears in Collections:Research publications

Show full item record

SCOPUSTM   
Citations

19
checked on Sep 3, 2020

WEB OF SCIENCETM
Citations

20
checked on May 21, 2022

Page view(s)

62
checked on May 20, 2022

Google ScholarTM

Check

Altmetric


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