Ferroelectric poly(vinylidene fluoride-hexafluoropropylene) thin films on silicon substrates

✍ Scribed by Xujiang He; Kui Yao; Bee Keen Gan

• Book ID: 108262858
• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 443 KB
• Volume: 139
• Category: Article
• ISSN: 0924-4247
• DOI: 10.1016/j.sna.2007.02.023

✦ Synopsis

Ferroelectric poly(vinylidene fluoride-hexafluoropropylene) (PVDF/HFP) thin films were prepared through a solution coating approach on aluminum-coated silicon substrates. The crystalline phase and morphology of the obtained PVDF/HFP thin films strongly depended on the drying temperature for the spin-coated films and chemical additives. When magnesium nitrate hexahydrate (Mg(NO3)2·6H2O) was introduced into the solution precursor, dominant β phase, the desired ferroelectric phase, was formed in the thin films. Their ferroelectric and piezoelectric properties were investigated. The results indicate that our methods have overcome a critical barrier for integrating ferroelectric PVDF/HFP thin films for device applications.