Fabrication and properties of organic light-emitting nanodiode arrays

Fabrication of discrete, structurally regular, highly ordered, nanoscale organic light-emitting diode (OLED) arrays using a variant of nanosphere lithography is communicated. We report patterning, imaging, and the device current-voltage-luminescence characteristics of arrays of OLED nanostructures (ITO/self-assembled N(p-C6H4CH2CH2CH2SiCl3)(3)-derived injection layer/1,4-bis(1-naphthylphenylamino)biphenyl/aluminum tris(8-hydroxyquinolate) (Alq): 1% N,N'-di-isoamyl quinacridone/Al) of a length scale previously unrealized (40-90 nm/side). Minimal alteration/degradation of device response characteristics is demonstrated for OLED size compression to nanoscale, thereby offering new possibilities for nanoscale optoelectronic devices.