TITLE

Imaging the degradation of polymer light-emitting devices

AUTHOR(S)
Dane, Justin; Gao, Jun
PUB. DATE
October 2004
SOURCE
Applied Physics Letters;10/25/2004, Vol. 85 Issue 17, p3905
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Anode-to-cathode spatially resolved study of polymer light-emitting device degradation has been performed based on a massive planar device structure. The unique device configuration of the extremely large planar frozen-junction light-emitting electrochemical cell allows for the study of device degradation by direct imaging. Constant current stress for an extended period results in a very unusual net luminance increase as opposed to luminance decay. Imaging of the emission zone has shown changes that are consistent with polymer degradation by the loss of electron mobility.
ACCESSION #
14909788

 

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