Abstract
The feasibility of using Cu as reflective anode for constructing efficient
top-emitting organic light-emitting diode (TOLED) has been demonstrated. The
MoO<sub><i>x</i></sub> modification can considerably enhance the work function of Cu anode,
which contributes to the improvement of hole injection and thereby promoting device
efficiency. In comparison with the TOLED having conventional Ag anode, the device having
Cu anode shows inferior efficiency partially resulted from low reflectance of Cu, but
the TOLED with Cu anode takes many advantages such as low-cost fabrication, enhanced
pixel contrast ratio, weak microcavity effect and reduced leakage current. These
improved performances are of great importance for practical applications, suggesting
that Cu provides an alternative approach for realizing TOLED-based
applications.
© 2011 IEEE
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