Improvement of interface formation between metal electrode and polymer film by polymer surface modification using ion sputtering

L. S. Liao, M. K. Fung, L. F. Cheng, C. S. Lee, S. T. Lee, M. Inbasekaran, E. P. Woo, W. W. Wu

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

9 Citations (Scopus)

Abstract

The surface of poly (9,9-dioctylfluorene) (PFO) film was modified by 1.0 keV Ar+ irradiation with a dose of 6.5 × 1014ions/cm2 prior to Ca deposition. Ultraviolet and x-ray photoelectron spectroscopic studies indicated that the modified surface could effectively block Ca diffusion into the PFO film and prevent the formation of doping-induced bipolaron states in the former forbidden energy gap. As a result, a sharper metal contact on the surface of the PFO film could be formed, compared to that on the surface without Ar+ irradiation. The results suggest that the judicial surface modification of polymer surfaces may be useful for the improvement of metal/polymer contacts and thus device performance. © 2000 American Institute of Physics.
Original languageEnglish
Pages (from-to)3191-3193
JournalApplied Physics Letters
Volume77
Issue number20
DOIs
Publication statusPublished - 13 Nov 2000

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