SEMICONDUCTING POLYMER QUANTUM WIRES

Semiconducting polymer heterostructures with strong two-dimensional qu antum confinement of excitons are prepared by self-assembly of two con jugated polymers in binary, blends. Exciton confinement effects in the semiconducting polymer quantum wires were observed at room temperatur e by photoluminescence excitation and photoluminescence spectroscopies and by electric field-induced photoluminescence quenching. Observatio n of new exciton states, enhanced luminescence, and stability of lumin escence at high electric fields (3 x 10(6) V/cm) confirmed the one-dim ensionality of the excitons in the organic quantum wires. (C) 1997 Ame rican Institute of Physics.