Bottom-emitting organic light-emitting diode device includes a semitransparent,
reflective and conductive anode including a metal or metal alloy or both formed
over a transparent substrate, a plurality of hole-injecting layers including a
bilayer structure having a layer including an oxide and a layer including a fluorinated
carbon disposed over the semitransparent, reflective and conductive anode, a plurality
of organic layers formed over the plurality of hole-injecting layers and including
an emissive layer having an electroluminescent material, and a reflective, opaque
and conductive cathode of a metal or metal alloy or both provided over the plurality
of organic layers, and the plurality of the hole-injecting layers being configured
to reduce the drive voltage, and the transparency of the anode, the reflectivity
of the cathode, and the thickness of the organic layers between the electrodes
being selected to change the internal reflection of light.