Fabrication of PbTiO3/PVDF-TrFE organic thin film capacitors / Nurbaya Zainal
This study presents a new dielectric material utilized for thin film organic capacitors. It consists of a combination of organic and inorganic ferroelectric materials, namely lead titanate (PbTiO3) and polyvinylidene fluoride trifiuoroethylene (PVDF-TrFE). In most ceramic-polymer dielectric films, t...
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my-uitm-ir.629372022-07-21T00:30:11Z Fabrication of PbTiO3/PVDF-TrFE organic thin film capacitors / Nurbaya Zainal 2019-01 Zainal, Nurbaya Dielectrics Electric conductivity This study presents a new dielectric material utilized for thin film organic capacitors. It consists of a combination of organic and inorganic ferroelectric materials, namely lead titanate (PbTiO3) and polyvinylidene fluoride trifiuoroethylene (PVDF-TrFE). In most ceramic-polymer dielectric films, the combination of PbTiO3 and PVDF-TrFE as a form of bilayer configuration has never been explored. The study highlights that with a presence of PVDF-TrFE as a second layer, the dielectric and ferroelectric property of PbTiO3 thin film improved. In this study, the dielectric thin films were prepared using a simple and cost-effective method of sol-gel spin coating. The deposition parameters for the synthesized PbTiO3 thin film was optimized at 0.4 M solution concentration, 10 wt% of excess Pb content, and annealed at 550°C. Subsequently, the optimized PbTiO3 thin film was utilized as a novel bilayer structure of PbTiO3/PVDF-TrFE film. The film demonstrated high dielectric permittivity value (εr~ 217)*and low tangent loss (tan (δ) ≈ 0.0017). In addition, the film has showed tremendous enhancement of remnant polarisation (Pr = 18.66 ^C/cm2 ), which is three times higher than a single PbTiO3 thin film. The new approach of parallel capacitor design is the highlight of this study and managed to produce high capacitance value (C ≈ 13.4 nF/cm2 ). To date, this is a notable achievement of the dielectric and ferroelectric properties for bilayer dielectric film as none of this finding has been declared, so far. Hence, a novel bilayer structure of PbTiO3/PVDF-TrFE film can be a promising candidate for high capacitance thin film capacitors. 2019-01 Thesis https://ir.uitm.edu.my/id/eprint/62937/ https://ir.uitm.edu.my/id/eprint/62937/1/62937.pdf text en public phd doctoral Universiti Teknologi MARA Faculty of Electrical Engineering Mahmood, Mohamad Rusop (Prof. Engr. Dr.) |
| institution |
Universiti Teknologi MARA |
| collection |
UiTM Institutional Repository |
| language |
English |
| advisor |
Mahmood, Mohamad Rusop (Prof. Engr. Dr.) |
| topic |
Dielectrics Electric conductivity |
| spellingShingle |
Dielectrics Electric conductivity Zainal, Nurbaya Fabrication of PbTiO3/PVDF-TrFE organic thin film capacitors / Nurbaya Zainal |
| description |
This study presents a new dielectric material utilized for thin film organic capacitors. It consists of a combination of organic and inorganic ferroelectric materials, namely lead titanate (PbTiO3) and polyvinylidene fluoride trifiuoroethylene (PVDF-TrFE). In most ceramic-polymer dielectric films, the combination of PbTiO3 and PVDF-TrFE as a form of bilayer configuration has never been explored. The study highlights that with a presence of PVDF-TrFE as a second layer, the dielectric and ferroelectric property of PbTiO3 thin film improved. In this study, the dielectric thin films were prepared using a simple and cost-effective method of sol-gel spin coating. The deposition parameters for the synthesized PbTiO3 thin film was optimized at 0.4 M solution concentration, 10 wt% of excess Pb content, and annealed at 550°C. Subsequently, the optimized PbTiO3 thin film was utilized as a novel bilayer structure of PbTiO3/PVDF-TrFE film. The film demonstrated high dielectric permittivity value (εr~ 217)*and low tangent loss (tan (δ) ≈ 0.0017). In addition, the film has showed tremendous enhancement of remnant polarisation (Pr = 18.66 ^C/cm2 ), which is three times higher than a single PbTiO3 thin film. The new approach of parallel capacitor design is the highlight of this study and managed to produce high capacitance value (C ≈ 13.4 nF/cm2 ). To date, this is a notable achievement of the dielectric and ferroelectric properties for bilayer dielectric film as none of this finding has been declared, so far. Hence, a novel bilayer structure of PbTiO3/PVDF-TrFE film can be a promising candidate for high capacitance thin film capacitors. |
| format |
Thesis |
| qualification_name |
Doctor of Philosophy (PhD.) |
| qualification_level |
Doctorate |
| author |
Zainal, Nurbaya |
| author_facet |
Zainal, Nurbaya |
| author_sort |
Zainal, Nurbaya |
| title |
Fabrication of PbTiO3/PVDF-TrFE organic thin film capacitors / Nurbaya Zainal |
| title_short |
Fabrication of PbTiO3/PVDF-TrFE organic thin film capacitors / Nurbaya Zainal |
| title_full |
Fabrication of PbTiO3/PVDF-TrFE organic thin film capacitors / Nurbaya Zainal |
| title_fullStr |
Fabrication of PbTiO3/PVDF-TrFE organic thin film capacitors / Nurbaya Zainal |
| title_full_unstemmed |
Fabrication of PbTiO3/PVDF-TrFE organic thin film capacitors / Nurbaya Zainal |
| title_sort |
fabrication of pbtio3/pvdf-trfe organic thin film capacitors / nurbaya zainal |
| granting_institution |
Universiti Teknologi MARA |
| granting_department |
Faculty of Electrical Engineering |
| publishDate |
2019 |
| url |
https://ir.uitm.edu.my/id/eprint/62937/1/62937.pdf |
| _version_ |
1783735278705311744 |