OPERATING STABILITY OF LIGHT-EMITTING POLYMER DIODES BASED ON POLY(P-PHENYLENE VINYLENE)

Authors
CARTER JC GRIZZI I HEEKS SK LACEY DJ LATHAM SG MAY PG DELOSPANOS OR PICHLER K TOWNS CR WITTMANN HF
Citation
Jc. Carter et al., OPERATING STABILITY OF LIGHT-EMITTING POLYMER DIODES BASED ON POLY(P-PHENYLENE VINYLENE), Applied physics letters, 71(1), 1997, pp. 34-36
Citations number
26
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
71
Issue
1
Year of publication
1997
Pages
34 - 36
Database
ISI
SICI code
0003-6951(1997)71:1<34:OSOLPD>2.0.ZU;2-L
Abstract
We have developed modified poly(p-phenylene vinylene) (PPV) to improve its performance in organic electroluminescent devices. Encapsulated s ingle-layer devices with this PPV on indium-tin oxide and a calcium ca thode have been operated in air for > 7000 h at 20 degrees C and > 110 0 h at 80 degrees C without noticeable degradation. Devices fabricated with this PPV, a conducting polymer layer as anode, and a sputtered l ow work-function alloy as cathode have efficiencies of over 2 lm/W, br ightnesses of >600 Cd/m(2) at 4 V, and lifetimes of > 1400 h driven at similar to 100 Cd/m(2) initial brightness. (C) 1997 American Institut e of Physics.