Author: Wei Cao
Publisher:
ISBN:
Category : Chemical vapor deposition
Languages : en
Pages : 278
Book Description
Processing and Properties of Lead Zirconate Titanate Thin Films on Gallium Nitride and Ruthenium by Sol-gel and Chemical Vapor Deposition
Author: Wei Cao
Publisher:
ISBN:
Category : Chemical vapor deposition
Languages : en
Pages : 278
Book Description
Publisher:
ISBN:
Category : Chemical vapor deposition
Languages : en
Pages : 278
Book Description
Dissertation Abstracts International
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 860
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 860
Book Description
Sol-Gel Spin Coating Growth Of Gallium Nitride Thin Films A Simple, Safe, and Cheap Approach (Penerbit USM)
Author: Fong Chee Yong
Publisher: Penerbit USM
ISBN: 9674612947
Category : Science
Languages : en
Pages : 115
Book Description
Wide direct band gap gallium nitride (GaN) semiconductor has received significant attention as an ideal material for various applications in the optoelectronic devices. One major use of GaN is the development of energy-efficient solid state light-emitting diodes. Currently, most commercially available GaN semiconductor are produced through advanced deposition techniques which involve sophisticated technologies and are relatively expensive and complicated to setup. As an alternative, the sol-gel spin coating method, which is relatively simpler, cheaper, safer, and more scalable was proposed. In this book, the process route and recipe for producing highly c-oriented crystalline GaN thin films via the sol-gel spin coating approach were described in detail. Some insights into the factors affecting the surface morphology as well as structural and optical properties of the deposited films were presented. Eventually, this book could inspire further studies into the development of low-cost GaN thin films.
Publisher: Penerbit USM
ISBN: 9674612947
Category : Science
Languages : en
Pages : 115
Book Description
Wide direct band gap gallium nitride (GaN) semiconductor has received significant attention as an ideal material for various applications in the optoelectronic devices. One major use of GaN is the development of energy-efficient solid state light-emitting diodes. Currently, most commercially available GaN semiconductor are produced through advanced deposition techniques which involve sophisticated technologies and are relatively expensive and complicated to setup. As an alternative, the sol-gel spin coating method, which is relatively simpler, cheaper, safer, and more scalable was proposed. In this book, the process route and recipe for producing highly c-oriented crystalline GaN thin films via the sol-gel spin coating approach were described in detail. Some insights into the factors affecting the surface morphology as well as structural and optical properties of the deposited films were presented. Eventually, this book could inspire further studies into the development of low-cost GaN thin films.
Sol-gel Processing and Properties of Lead Zirconate Titanate Powder and Hollow Spheres
Author: Xiaoming Yang
Publisher:
ISBN:
Category :
Languages : en
Pages : 216
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 216
Book Description
Sol-gel Processing of Lead Zirconate Titanate Films
Author: Guanghua Yi
Publisher:
ISBN:
Category : Electronic ceramics
Languages : en
Pages : 190
Book Description
Publisher:
ISBN:
Category : Electronic ceramics
Languages : en
Pages : 190
Book Description
Ceramic Abstracts
Author:
Publisher:
ISBN:
Category : Ceramics
Languages : en
Pages : 426
Book Description
Publisher:
ISBN:
Category : Ceramics
Languages : en
Pages : 426
Book Description
Chemical Synthesis, Processing, Microstructure, and Ferroelectric Properties of Lead Zirconate Titanate Thin Films
Author: Yimin Liu
Publisher:
ISBN:
Category :
Languages : en
Pages : 171
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 171
Book Description
Sol-gel Processing of Lead Zirconate Titanate Films
Author: R. A. Lipeles
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Thermal Processing and the Evolution of Composition, Structure and Properties for Sol-gel Derived Lead Zirconate Titanate Thin Layers
Author: Charles David Edward Lakeman
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Research is reported for the relationships that exist between processing, composition and structure development, and properties, for sol-gel derived $rm Pb(Zrsb{0.53}Tisb{0.47})Osb3$ (PZT) thin layers. Emphasis was placed on the effect of thermal processing conditions on the gel-to-ceramic conversion. In addition, the effects of interfacial reactions, and residual stresses on the measured properties were also considered. The purpose of the work was to contribute to the fundamental understanding of processes which occur during the high temperature treatment of sol-gel derived thin layers. The gel-to-ceramic conversion was monitored by transmission electron microscopy, diffuse reflectance infrared spectroscopy, and X-ray diffraction. As-deposited coatings were found to be amorphous with compositional heterogeneity at the nanoscale. This is the first report which identifies the nature of the compositional heterogeneity. Structural rearrangement occurred during thermal processing and, for slow heating (50$spcirc$C/min), the coatings approached compositional uniformity on crystallization into the perovskite phase. However, for faster heating rates, the degree of structural rearrangement was limited, thereby decreasing the shrinkage normal to the coating, and crystallization was shifted to a higher temperature. Also, for very rapid thermal processing (5000$spcirc$C/min), compositional heterogeneity was retained in the coatings after crystallization. An apparent dependence on thickness for the properties for ferroelectric PZT thin layers was observed. It was confirmed that a cover coat of a PbO-precursor deposited onto the gel-derived layers prior to firing compensated for the volatilization of PbO which occurred during heating, resulting in coatings which displayed improved properties over those prepared without a cover coat. A simple series capacitor model was investigated to interpret the data. SIMS and TEM analyses indicated that diffusion of some of the species resulted in the formation of a sub-electrode nano-crystalline phase, however, no second phases were observed between the electrode and the coating. Measurements of the residual stress state in PZT coatings deposited onto platinized silicon substrates, and fired at 700$spcirc$C, indicated a tensile stress of approximately +200MPa in the plans of the coating. Thermal expansion mismatch stresses were calculated to be of the order of $-$300MPa in compression, indicating that large tensile stresses were generated during constrained shrinkage.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Research is reported for the relationships that exist between processing, composition and structure development, and properties, for sol-gel derived $rm Pb(Zrsb{0.53}Tisb{0.47})Osb3$ (PZT) thin layers. Emphasis was placed on the effect of thermal processing conditions on the gel-to-ceramic conversion. In addition, the effects of interfacial reactions, and residual stresses on the measured properties were also considered. The purpose of the work was to contribute to the fundamental understanding of processes which occur during the high temperature treatment of sol-gel derived thin layers. The gel-to-ceramic conversion was monitored by transmission electron microscopy, diffuse reflectance infrared spectroscopy, and X-ray diffraction. As-deposited coatings were found to be amorphous with compositional heterogeneity at the nanoscale. This is the first report which identifies the nature of the compositional heterogeneity. Structural rearrangement occurred during thermal processing and, for slow heating (50$spcirc$C/min), the coatings approached compositional uniformity on crystallization into the perovskite phase. However, for faster heating rates, the degree of structural rearrangement was limited, thereby decreasing the shrinkage normal to the coating, and crystallization was shifted to a higher temperature. Also, for very rapid thermal processing (5000$spcirc$C/min), compositional heterogeneity was retained in the coatings after crystallization. An apparent dependence on thickness for the properties for ferroelectric PZT thin layers was observed. It was confirmed that a cover coat of a PbO-precursor deposited onto the gel-derived layers prior to firing compensated for the volatilization of PbO which occurred during heating, resulting in coatings which displayed improved properties over those prepared without a cover coat. A simple series capacitor model was investigated to interpret the data. SIMS and TEM analyses indicated that diffusion of some of the species resulted in the formation of a sub-electrode nano-crystalline phase, however, no second phases were observed between the electrode and the coating. Measurements of the residual stress state in PZT coatings deposited onto platinized silicon substrates, and fired at 700$spcirc$C, indicated a tensile stress of approximately +200MPa in the plans of the coating. Thermal expansion mismatch stresses were calculated to be of the order of $-$300MPa in compression, indicating that large tensile stresses were generated during constrained shrinkage.
Ultrasonic Experiments with Lead Zirconate Titanate Thin Films Fabricated by Sol Gel Processing
Author: G. Yi
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description