Author: Bryan D. PaulsenPublisher:
ISBN:
Category :
Languages : en
Pages : 208
Book Description
Characterization of Pi-conjugated Polymers for Transistor and Photovoltaic Applications
Author: Bryan D. PaulsenSynthesis and Characterization of Novel Conjugated Polymers and Small Molecules for Photovoltaic Applications
Author: Robert James ThompsonPublisher:
ISBN:
Category :
Languages : en
Pages : 299
Book Description
This dissertation describes the synthesis and characterization of several novel conjugated polymers and small molecules for use in research on organic photovoltaics (i.e. polymer solar cells/organic solar cells). Chapter 1 is an introductory chapter that briefly introduces semiconducting polymers and gives a brief overview of their use in polymer solar cells. Chapter 2 describes the synthesis and characterization of the conjugated polyelectrolyte, poly{(4,4-bis(3'-(N-ethyl-N,N-dimethylammonio)propyl)cyclopenta[2,1-b:3,4-b']dithiophene)-2,6-diyl-alt-(thiophene-2,5-diyl)} bromide (PCT). Chapter 3 describes the synthesis and characterization of a series of conjugated polymers containing substituted dithieno[3,2-a:2',3'-c]phenazine monomer units, and also describes the fabrication and analysis of solar cells devices made from these materials. Chapter 4 describes the synthesis and characterization of a series of conjugated polymers and small molecules based on the condensation of various aromatic o-diamines with o-diketones to produce novel N-heteroacenes. Chapter 5 gives a brief review of the work reported in this dissertation and provides suggestions for future work that can be built on those findings.
Spectroscopic and Electrochemical Characterization of Organic Conjugated Polymers for Light-emitting Display and Photovoltaic Applications
Author: Melissa Ann KregerPublisher:
ISBN:
Category : Light emitting diodes
Languages : en
Pages : 384
Book Description
Synthesis and Characterization of Novel [pi]-conjugated Small Molecules and Polymers with Hydrogen Bonding & Preparation of 2D Single Crystals for Organic Field-effect Transistors
![Synthesis and Characterization of Novel [pi]-conjugated Small Molecules and Polymers with Hydrogen Bonding & Preparation of 2D Single Crystals for Organic Field-effect Transistors PDF](https://books.google.com/books/content/images/frontcover/TjYXtAEACAAJ?fife=w80-h100)
Author: Ruonan DengPublisher:
ISBN:
Category : Conjugated polymers
Languages : en
Pages : 38
Book Description
Two [pi]-conjugated polymers containing isoindigo or 3,3-(ethane-1, 2 diylidene)bis(indolin-2-one) (EBI) units with latent hydrogen-bonding on the main chain were synthesized and characterized. The designed polymers use thermal liable t-Boc groups as side chains on the backbone and can be easily dissolved in common organic solvent. Further thermal treatment of the polymers at around 180° C can convert the polymers into strong hydrogen-bonded materials. The effect of formation of intermolecular hydrogen bonding networks on the polymer film properties including the UV/Vis absorption and electrochemical properties are studied. In the second part of this work, 2D organic single crystals of three conjugated small molecules, di-tert-butyl 1,4-dioxo-3,6-di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-2,5(1H,4H)-dicarboxylate (DPPBoc), isoindigo, and cyclized DPP were successfully prepared by either solution epitaxial growth, mechanical exfoliation, or physical vapor deposition methods for organic field-effect transistor (OFET) applications. A thickness that less than 100 nm can be achieved for the obtained 2D crystals.
Conjugated Polymers for Next-Generation Applications, Volume 1
Author: Vijay KumarPublisher: Woodhead Publishing
ISBN: 0128236345
Category : Technology & Engineering
Languages : en
Pages : 618
Book Description
Conjugated Polymers for Next-Generation Applications, Volume One: Synthesis, Properties and Optoelectrochemical Devices describes the synthesis and characterization of varied conjugated polymeric materials and their key applications, including active electrode materials for electrochemical capacitors and lithium-ion batteries, along with new ideas of functional materials for next-generation high-energy batteries, a discussion of common design procedures, and the pros and cons of conjugated polymers for certain applications. The book’s emphasis lies in the underlying electronic properties of conjugated polymers, their characterization and analysis, and the evaluation of their effectiveness for utilization in energy and electronics applications. This book is ideal for researchers and practitioners in the area of materials science, chemistry and chemical engineering. Provides an overview of the synthesis and functionalization of conjugated polymers and their composites Reviews important photovoltaics applications of conjugated polymeric materials, including their use in energy storage, batteries and optoelectronic devices Discusses conjugated polymers and their application in electronics for sensing, bioelectronics, memory, and more
Conjugated Polymers for Next-Generation Applications, Volume 2
Author: Vijay KumarPublisher: Woodhead Publishing
ISBN: 0128240954
Category : Technology & Engineering
Languages : en
Pages : 443
Book Description
Conjugated Polymers for Next-Generation Applications, Volume Two: Energy Storage Devices describes the synthesis and characterization of varied conjugated polymeric materials and their key applications, including active electrode materials for electrochemical capacitors and lithium-ion batteries, along with new ideas of functional materials for next-generation high-energy batteries, a discussion of common design procedures, and the pros and cons of conjugated polymers for certain applications. The book’s emphasis lies in the underlying electronic properties of conjugated polymers, their characterization and analysis, and the evaluation of their effectiveness for utilization in energy and electronics applications. This book is ideal for researchers and practitioners in the area of materials science, chemistry and chemical engineering. Provides an overview of the synthesis and functionalization of conjugated polymers and their composites Reviews important photovoltaics applications of conjugated polymeric materials, including their use in energy storage, batteries and optoelectronic devices Discusses conjugated polymers and their application in electronics for sensing, bioelectronics, memory, and more
Preparation and Characterisation of New Efficient Conjugated Polymers for Photovoltaic Applications
Author: Bader AltayebDesign, Synthesis, and Application of Novel π-Conjugated Materials - Part II
Author: Haichang ZhangPublisher: Frontiers Media SA
ISBN: 2889716112
Category : Science
Languages : en
Pages : 70
Book Description
Synthesis and Characterization of Pi-conjugated Polymers Utilizing A-B Monomers
Author: Malika Jeffries-ELPi-conjugated Polymers for Electrochromic and Photovoltaic Applications
Author: Tanmoy DeyPublisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages :
Book Description
Electrochromism is a process by which a material can change its electronic-optical properties upon charge injection/removal. Conjugated polymers are an interesting class of electrochromic materials because of their color tunability, high optical contrasts, fast switching speeds, and processability. Poly(3,4-propylenedioxy)thiophenes (PProDOT) are a substantial subclass of materials in conjugated polymer electrochromics due to their high optical contract between the bleached and colored states. Common derivatives of this molecule are typically made at the beta position with respect to oxygen on the seven membered ring. PProDOTs with methyl and benzyl substituents (beta position with respect to oxygen) are two of the more successful due to their high contrast. We have found that there is a much more substantial effect when PProDOT is derivatized in the positions alpha to the oxygen. For example, two t-butyl groups with each placed alpha to the oxygen in PProDOT incurs a 200 nm shift in the lambda max (365 nm) compared to having two methyl groups with each placed alpha to the oxygen. The dimethyl derivative is blue in color whereas the di-t-butyl, dihexyl, diisopropyl is showing yellow, orange and red color respectively. The polymer of this new derivative, P13ProDOT-TB2 and P13ProDOT-Hex 2 is organic-soluble and can be processed by a variety of solution methods, including spray coating. Furthermore we have also studied some selenium based polymer for electrochromic application. Poly(3,4-propylenedioxy)selenophenes (PProDOS) is showing better optical contrast, stability and faster switching speed as compared to their sulfur analogs. Low band gap conducting polymers (CPs) have relatively low absorption in the visible region, in their conducting states, making them promising candidates for optically transparent electrode, hole-injection layer for light-emitting diodes and suitable donor material for Photovoltaics. The monomer, Seleno[3,2- c]thiophene and Seleno[3,4-b]thiophene, were electrochemically and polymerized to produce new low band gap conducting polymer, poly(Seleno[3,2- c]thiophene) (PS32cT) and Poly(Seleno[3,4-b]thiophene) (PS34bT), having a low band gap of 1.03 eV and 1.50 eV respectively. Besides from the suitable energy gap, they also offer a good match of the absolute energy levels with the other materials in the photovoltaic device. The HOMO of the low band gap polymers agree with the work function of ITO and LUMO matches with the acceptor level of PCBM. This overlap is very important to the function of photovoltaic devices. In a different approach we describe a new alternative route for the synthesis of thieno[3,4-b]thiophene, alkyl derivatives thereof, seleno[3,4- b]thiophene, and thieno[3,4-b]furan made from inexpensive starting materials, such as thiophene-2-carboxylic acid and furan-2-carboxylic acid. Such fused heterocycles are of great interest for low band gap organic semiconductors and applications including OLEDs, organic photovoltaic cells, and electrochromic applications.