Enhancement of light extraction of green top-emitting organic light-emitting diodes with refractive index gradually changed coupling layers

@inproceedings{Fan2013EnhancementOL,
  title={Enhancement of light extraction of green top-emitting organic light-emitting diodes with refractive index gradually changed coupling layers},
  author={Yan Fan and Jiangshan Chen and Dongge Ma},
  year={2013}
}
By means of refractive index gradually changed coupling layers, a highly efficient green top-emitting OLED (TOLED) with enhanced light coupling efficiency and stable colors over angles has been realized. The refractive index transition of the coupling layers including the doping layer smoothes light extraction from the semitransparent cathode metal to the air, which is the reason for the enhancement of light coupling efficiency. The doping layer in the coupling layers also acts as a… CONTINUE READING