Ytterbium Alloy Electrode for OLED Light Efficiency

The patent employs composite electrode structures combining multiple materials (e.g., ITO with metal oxides, or transparent conductive polymers with metal nanoparticles) to simultaneously achieve low resistance and high transmittance. This composite approach allows the electrode to function effectively without increasing overall device complexity, directly resolving the contradiction between light loss reduction and structural simplicity.

The patent modifies electrode parameters such as thickness, composition ratio, and work function through systematic variation. By optimizing these parameters, the electrode achieves both low resistance and high transmittance properties, eliminating light loss while maintaining a relatively simple device structure that does not require complex multi-layer configurations.

The patent uses composite materials where a thin layer of highly conductive material (e.g., metal oxide or transparent conductive polymer) is combined with a transparent material. This composite structure achieves low sheet resistance without requiring increased thickness, thereby maintaining high light transmittance while ensuring adequate conductivity for reliable device operation.

The patent applies local quality by creating electrodes with spatially varying properties - for example, gradient composition or non-uniform thickness distribution. This allows regions requiring higher conductivity to have optimized properties while other regions maintain high transmittance, resolving the contradiction between sheet resistance and light absorption without uniformly increasing overall electrode thickness.