The conducting homogeneity of polyaniline and ITO films: AFM-CITS studies
2003
Hochschulschrift
Zugriff:
91
The current image tunneling spectroscopy (CITS) has been used to measure the scanning tunneling spectroscopy (STS) of the sample surface, in which the surface conductivity can be illustrated. The surface treatment and modification of ITO anode have a large impact on the performance of PLED devices. ITO was cleaned with various methods. The cleaned ITO was then treated with a monolayer of organic silane via molecular self-adsorption. On top of cleaned or silane modified ITO, a layer of polyaniline film was deposited via in-situ polymerization/deposition. CITS was used to study the conducting homogeneity of ITO and polyaniline films. It was found that the conductivity of ITO films is very homogeneous. Their surface morphology and CITS image have a point-to-point corresponding. Nevertheless, the topographies of polyaniline films are different from their CITS images. The morphology of all polyaniline films studied revealed a spheric aggregation. On the other hand, the CITS images of polyaniline films showed conducting islands with various sizes of conducting domain.
Titel: |
The conducting homogeneity of polyaniline and ITO films: AFM-CITS studies
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Autor/in / Beteiligte Person: | Chem, Pi-Yu ; 陳碧玉 |
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Veröffentlichung: | 2003 |
Medientyp: | Hochschulschrift |
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