Author: Ned Francis O'BrienPublisher:
ISBN:
Category : Ellipsometry
Languages : en
Pages : 196
Book Description
Characterization of the Linear Electro-optic Properties of Thin-film Poled Polymers
Author: Ned Francis O'BrienPublisher:
ISBN:
Category : Ellipsometry
Languages : en
Pages : 196
Book Description
Linear and Nonlinear Optical Property Characterization of Polymers for Photonic Applications
Author: Liu-Ming WuPoled Polymers and Their Applications to SHG and EO Devices
Author: Seizo MiyataPublisher: CRC Press
ISBN: 1000159507
Category : Technology & Engineering
Languages : en
Pages : 302
Book Description
Poled polymers doped with nonlinear optically active chromophores combine the large second order nonlinearity of the dopant dye molecules with the optical quality of the polymer. The material design flexibility afforded to doped polymers makes them attractive in a large variety of devices and applications. This book addresses the critical science and technology issues in the development and application of poled polymers, with an emphasis on the stabilization of poled polymers and their special applications to second harmonic generation (SHG) and electro-optic (EO) devices.
Characterization Techniques and Tabulations for Organic Nonlinear Optical Materials
Author: Mark G. KuzykPublisher: CRC Press
ISBN: 1351461818
Category : Science
Languages : en
Pages : 911
Book Description
""Furnishes table of nonlinear optical properties of organic substances as well as experimental procedures for measuring the nonlinearity of the elements tabulated, including composite materials-offering support for scientists and engineers involved in characterizing, optimizing, and producing materials for manufacturing optical devices.
Optics of Conducting Polymer Thin Films and Nanostructures
Author: Shangzhi ChenPublisher: Linköping University Electronic Press
ISBN: 9179297455
Category :
Languages : en
Pages : 142
Book Description
Intrinsically conducting polymers forms a category of doped conjugated polymers that can conduct electricity. Since their discovery in the late 1970s, they have been widely applied in many fields, ranging from optoelectronic devices to biosensors. The most common type of conducting polymers is poly(3,4-ethylenedioxythiophene), or PEDOT. PEDOT has been popularly used as electrodes for solar cells or light-emitting diodes, as channels for organic electrochemical transistors, and as p-type legs for organic thermoelectric generators. Although many studies have been dedicated to PEDOT-based materials, there has been a lack of a unified model to describe their optical properties across different spectral ranges. In addition, the interesting optical properties of PEDOT-based materials, benefiting from its semi-metallic character, have only been rarely studied and utilized, and could potentially enable new applications. Plasmonics is a research field focusing on interactions between light and metals, such as the noble metals (gold and silver). It has enabled various opportunities in fundamental photonics as well as practical applications, varying from biosensors to colour displays. This thesis explores highly conducting polymers as alternatives to noble metals and as a new type of active plasmonic materials. Despite high degrees of microstructural disorder, conducting polymers can possess electrical conductivity approaching that of poor metals, with particularly high conductivity for PEDOT deposited via vapour phase polymerization (VPP). In this thesis, we systematically studied the optical and structural properties of VPP PEDOT thin films and their nanostructures for plasmonics and other optical applications. We employed ultra-wide spectral range ellipsometry to characterize thin VPP PEDOT films and proposed an anisotropic Drude-Lorentz model to describe their optical conductivity, covering the ultraviolet, visible, infrared, and terahertz ranges. Based on this model, PEDOT doped with tosylate (PEDOT:Tos) presented negative real permittivity in the near infrared range. While this indicated optical metallic character, the material also showed comparably large imaginary permittivity and associated losses. To better understand the VPP process, we carefully examined films with a collection of microstructural and spectroscopic characterization methods and found a vertical layer stratification in these polymer films. We unveiled the cause as related to unbalanced transport of polymerization precursors. By selection of suitable counterions, e.g., trifluoromethane sulfonate (OTf), and optimization of reaction conditions, we were able to obtain PEDOT films with electrical conductivity exceeding 5000 S/cm. In the near infrared range from 1 to 5 µm, these PEDOT:OTf films provided a well-defined plasmonic regime, characterized by negative real permittivity and lower magnitude imaginary component. Using a colloidal lithography-based approach, we managed to fabricate nanodisks of PEDOT:OTf and showed that they exhibited clear plasmonic absorption features. The experimental results matched theoretical calculations and numerical simulations. Benefiting from their mixed ionic-electronic conducting characters, such organic plasmonic materials possess redox-tunable properties that make them promising as tuneable optical nanoantennas for spatiotemporally dynamic systems. Finally, we presented a low-cost and efficient method to create structural colour surfaces and images based on UV-treated PEDOT films on metallic mirrors. The concept generates beautiful and vivid colours through-out the visible range utilizing a synergistic effect of simultaneously modulating polymer absorption and film thickness. The simplicity of the device structure, facile fabrication process, and tunability make this proof-of-concept device a potential candidate for future low-cost backlight-free displays and labels.
Electrical and Optical Polymer Systems
Author: Donald L. WisePublisher: CRC Press
ISBN: 9780824701185
Category : Science
Languages : en
Pages : 1266
Book Description
"Offers background information, methods of characterization, and applications for electrical and optical polymers, including biopolymers, and tutorial sections that explain how to use the techniques."
Characterization Techniques and Tabulations for Organic Nonlinear Optical Materials
Author: Carl W. DirkPublisher: Routledge
ISBN: 135146180X
Category : Science
Languages : en
Pages : 914
Book Description
""Furnishes table of nonlinear optical properties of organic substances as well as experimental procedures for measuring the nonlinearity of the elements tabulated, including composite materials-offering support for scientists and engineers involved in characterizing, optimizing, and producing materials for manufacturing optical devices.
Characterization of Optical Polymers for Multi-layered Electro-optic Devices
Author: Lori Ellen RohlevPublisher:
ISBN:
Category : Electrooptical devices
Languages : en
Pages : 296
Book Description
Poled Polymers and Their Applications to SHG and EO Devices
Author: Seizo MiyataPublisher: CRC Press
ISBN: 9789056990251
Category : Technology & Engineering
Languages : en
Pages : 302
Book Description
Poled polymers doped with nonlinear optically active chromophores combine the large second order nonlinearity of the dopant dye molecules with the optical quality of the polymer. The material design flexibility afforded to doped polymers makes them attractive in a large variety of devices and applications. This book addresses the critical science and technology issues in the development and application of poled polymers, with an emphasis on the stabilization of poled polymers and their special applications to second harmonic generation (SHG) and electro-optic (EO) devices.
Optical Properties of Poled Polymeric Thin Films
Author: Mohammad Ali MortazaviPublisher:
ISBN:
Category :
Languages : en
Pages : 342
Book Description