Adsorbate/absorbate interactions with organic ferroelectric polymers

作者：Dowben P A^*; Rosa Luis G; Ilie Carolina C; Xiao Jie

来源：Journal of Electron Spectroscopy and Related Phenomena, 2009, 174(1-3): 10-21.

DOI：10.1016/j.elspec.2009.03.005

• Ferroelectric polymers
• Molecular adsorption
• Interface dipoles
• Molecular orbital offsets
• HOMO-LUMO gap
• Molecular electronic structure

We discuss the interactions of adsorbates with the organic ferroelectric copolymer poly(vinylidene fluoride (PVDF)-trifluoroethylene (TrFE)). Range of molecular adsorbates is discussed from the smaller polar molecules like water, which is small enough to both adsorb and absorb, to the larger macrocyclic metal-organic metal phthalocyanines. The changes in local dipole orientation may affect the strength of the coupling between adsorbate or absorbate and the copolymer poly(vinylidene fluoride-trifluoroethylene). The interface dipole interactions may also affect device properties. The dipole interactions are implicated at the interface between copper phthalocyanine and poly(vinylidene fluoride with trifluoroethylene) affecting the band offsets and the diode propel-ties.

• 出版日期2009-8