Process of minimizing the operating voltage of an organic light emitting diode
AssigneeSiemens Aktiengesellschaft
InventorsAchim Böhler, Stefan Wiese, Dirk Metzdorf, Wolfgang Kowalsky
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Abstract
The process of minimizing the operating voltage of an organic light emitting diode includes the steps of providing a transparent substrate and applying a transparent bottom electrode thereto. It furthermore includes the step of applying to the bottom electrode a semitransparent layer of a metal having a work function in the range from 4 to 7 eV and applying to the semitransparent layer at least one organic functional layer and a top electrode including magnesium and silver.
Claims12
A method for minimizing the operating voltage of an organic light emitting diode, which comprises:
- providing a transparent substrate;
- applying thereto a transparent bottom electrode;
- applying directly onto said bottom electrode a semitransparent layer of a metal having a work function in the range from 4 to 7 eV;
- applying directly onto said semitransparent layer at least one organic functional layer and a top electrode comprising magnesium and silver.
A method for minimizing the operating voltage of an organic light emitting diode, which comprises:
- providing a transparent substrate;
- applying thereto a transparent bottom electrode;
- applying directly onto said bottom electrode a semitransparent layer of a metal having a work function in the range of greater than 4 to 7 eV;
- applying directly onto said semitransparent layer at least one organic functional layer and a top electrode consisting of magnesium and silver.
A method for minimizing the operating voltage of an organic light emitting diode, which comprises:
- providing a transparent substrate;
- applying thereto a transparent bottom electrode;
- applying directly onto said bottom electrode a semitransparent layer of a metal having a work function in the range of greater than 4 to 7 eV;
- applying directly onto said semitransparent layer at least one organic functional layer and a top electrode comprising magnesium and silver.
Dependencies are inferred from the claim text.