Electrogenerated chemiluminescence (ECL) from a π-conjugated polymer, poly(3-hexylthiophene) (PAT6), is reported. The pulse electrolysis of a film of PAT6 in an acetonitrile solution of tetrabutylammonium tetrafluoroborate yields a red emission. The ECL spectrum is almost the same as that of photoluminescence of PAT6, indicating that the radiative annihilation of electrochemically formed charged excited states takes place. The mechanism of ECL is discussed in terms of the dynamics of the charged excited species.

Electromechanical effect in a freely suspended film based on 4-n-octyl-4′-cyanobiphenyl has been detected by means of light scattering at both the first and second harmonics of the exciting electric field. Experimental studies on voltage and frequency dependencies of the optical response are carried out. Organic solvent vapor is shown to strongly affect the electromechanical response. A feasible mechanism for the electromechanical effect is discussed.

Electrogenerated chemiluminescence (ECL) from films of the title compounds in an electrolytic solution were studied. Poly(3-hexylthiophene) and poly(2-methoxy-5-dodecyloxy-p-phenylenevinylene) possess ECL predominantly during the anodic and cathodic scan, respectively, in the double potential step electrolysis which alternately produces negatively and positively charged excited species of the polymers. The chronoabsorptometric measurements indicated that the polarity dependence of the ECL is originated from the difference in the kinetics of the electrochemical p- and n-type doping/undoping reactions.

UX6-100 nm generation CMOS integration technology is demonstrated. Various transistor performances (UHF', HP, MP, Over-drive), yields of unit processes and 6T-SRAM operation were verified using full-integration processed wafers. To meet the requirement for various performance, multi-V, multi-thickness gate-oxide process, low-leakage gate &electric are incorporated in FEOL. To suppress RC increase compared to previous generation, low-k (KefF3.1) interlayer &electric and Cu interconnect dual damascene are incorporated in BEOL.

D-C electrochemiluminescence (ECL) of poly(2-methoxy-5-dodecyloxy- p-pheynylenevinylene) was observed for the film immersed in an electrolytic solution and for its dry composite film with a solid polymer electrolyte using interdigitated gold electrodes spaced 5 µ m apart. The coincidence of the onset voltages and spectra of the ECL suggests that both ECLs can be interpreted by the same mechanism: negatively and positively charged excited species of the polymer are formed at the cathode and anode, respectively, and recombine between the electrodes to form singlet excitons which radiatively relax to the ground state.