On-line experiments concerning surface-enhanced Raman scattering (SERS) were performed on organic light-emitting diodes based on poly(3-octylthiophene) (P3OT). A simultaneous reduction of the emitted power and an increase in the SERS signal were observed above an 8-V bias voltage. The enhancement of the Raman signal was partly thermal and partly electromagnetic in origin, with clear evidence of cathode roughening induced by current flow. Only a weak chemical interaction between the P3OT film and the cathode was detected.
On-line monitoring oly(f po3-octylthiophene)-based light emitting diodes by surface-enhanced Raman scattering / E. GIORGETTI; G. MARGHERI; T. DEL ROSSO; S. SOTTINI; M. MUNIZ-MIRANDA; M. INNOCENTI. - In: LASER PHYSICS. - ISSN 1054-660X. - STAMPA. - 15:(2005), pp. 320-323.
On-line monitoring oly(f po3-octylthiophene)-based light emitting diodes by surface-enhanced Raman scattering
MUNIZ-MIRANDA, MAURIZIO;INNOCENTI, MASSIMO
2005
Abstract
On-line experiments concerning surface-enhanced Raman scattering (SERS) were performed on organic light-emitting diodes based on poly(3-octylthiophene) (P3OT). A simultaneous reduction of the emitted power and an increase in the SERS signal were observed above an 8-V bias voltage. The enhancement of the Raman signal was partly thermal and partly electromagnetic in origin, with clear evidence of cathode roughening induced by current flow. Only a weak chemical interaction between the P3OT film and the cathode was detected.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.