@article{27545,
  keywords = {Emission},
  author = {Deang Liu and Michael Fina and Zhaoyang Chen and Xiaobo Chen and Gao Liu and Steven Johnson and Samuel S Mao},
  title = {Organic light-emitting diodes with structured cathode},
  abstract = {Organic light-emitting diode (OLED) devices were fabricated with a structured polymer-cathode interface. The devices have a layered structure indium tin oxide/poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate)/poly(2-methoxy-5-[(2'-ethylhexyl)oxy]-p-phenylenevinylene)/Al . The light-emitting polymer layers were patterned via a stamp imprinting process, followed by vapor deposition of the cathode. Devices employing the structured cathode showed improved electron injection and increased brightness when compared to conventional flat cathode devices. Electrostatic modeling of the structured cathode geometry revealed localized increase in electric field leading to enhanced electron tunneling through the polymer-cathode interface. Thus, improved OLED performance was demonstrated from cathode microstructuring. },
  year = {2007},
  journal = {Applied Physics Letters},
  volume = {91},
  number = {9},
  pages = {093514-1-3},
  month = {08/2007},
  language = {eng},
}