Abstract
The morphologic and luminescent behaviors of various 4-(dicyanomethylene)- 2methyl-6-(p-dimethylaminostyryl)-4H-pyran (DCM) containing films have been investigated. This involves pure DCM layers deposited on top of a tris-(8-hydroxyquinoline) aluminum (Alq) layer or positioned between two Alq layer, DCM-doped Alq films, and periodically arranged Alq/DCM multilayer structures. The occurrence over a period of time of aggregation and permeation of DCM molecules at room temperature and at temperatures as low as ∼260K is found in all the cases studied. Such a phenomenon will result in degradation of related organic light-emitting devices and is closely related to the electric polarity of the DCM molecule.
Original language | English |
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Pages (from-to) | 1122-1124 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 81 |
Issue number | 6 |
DOIs | |
State | Published - 5 Aug 2002 |
Externally published | Yes |