Abstract
Electric-field-induced photoluminescent variation has been observed from the red-emitting dopant, 4-(di cyanomethylene)-2-methyl-6-(p- dimethylaminostyryl)-4H-pyran (DCM). The layered structure of Al/tris-(8-hydroxyquinoline) aluminum (Alq)/DCM-doped Alq (Alq:DCM)/indium tin oxide studied, exhibits relatively enhanced red emission when a voltage is applied such that the electric field runs directly from the Alq:DCM layer to the Alq layer, and relatively enhanced green emission in the opposite direction of the field. This phenomenon is attributed to field-enhanced aggregation and permeation of DCM molecules due to the polarity of the molecule.
| Original language | English |
|---|---|
| Pages (from-to) | 1753-1756 |
| Number of pages | 4 |
| Journal | Applied Physics A: Materials Science and Processing |
| Volume | 80 |
| Issue number | 8 |
| DOIs | |
| State | Published - May 2005 |
| Externally published | Yes |
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