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 of poly(3-octylthiophene)- based light emitting diodes by surface-enhanced Raman Scattering
Giorgetti E;Margheri G;Sottini S;
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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
