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New Materials and Processing Routes for Organic Electrochemical Transistors.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	New Materials and Processing Routes for Organic Electrochemical Transistors./
Author:	Yi, Zhihui.
Description:	1 online resource (143 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 75-01C.
Contained By:	Dissertation Abstracts International75-01C.
Subject:	Chemical engineering. -
Online resource:	click for full text (PQDT)

New Materials and Processing Routes for Organic Electrochemical Transistors.
Yi, Zhihui.

New Materials and Processing Routes for Organic Electrochemical Transistors. - 1 online resource (143 pages)

Source: Dissertation Abstracts International, Volume: 75-01C.

Thesis (Ph.D.)

Includes bibliographical references

Organic electronics, which use thin films or single crystals of organic pi-conjugated materials as semiconductors, enable technologies for large-area, mechanically flexible and low-cost electronics.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

Subjects--Topical Terms:

555952
Chemical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

New Materials and Processing Routes for Organic Electrochemical Transistors.
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100 1 $a Yi, Zhihui. $3 1182266
245 1 0 $a New Materials and Processing Routes for Organic Electrochemical Transistors.
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300 $a 1 online resource (143 pages)
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500 $a Source: Dissertation Abstracts International, Volume: 75-01C.
502 $a Thesis (Ph.D.) $c Ecole Polytechnique, Montreal (Canada) $d 2016.
504 $a Includes bibliographical references
520 $a Organic electronics, which use thin films or single crystals of organic pi-conjugated materials as semiconductors, enable technologies for large-area, mechanically flexible and low-cost electronics.
520 $a Intense research in organic electronics started in the 90s, with the demonstration of the first lightemitting diodes, transistors and solar cells based on organic materials. Today, such devices are becoming ubiquitous in our society as they can be found in displays based on organic lightemitting diodes in mobile phones, televisions and many other consumer devices. Other organic electronic devices, such as transistors for radio frequency identification tags, are expected to enter the market in the near future. Organic electronic materials present several advantages over inorganic ones, which make them more viable for targeted applications. One the most significant advantages of organic materials is their ability to transport both ionic and electronic charges, which can be exploited in bioelectronics, a multidisciplinary field that deals with the coupling of electronic devices with biological systems.
520 $a The primary goal of bioelectronics is to exploit electronic devices for biological applications, such as implants, drug delivery systems, artificial skin, and sensors for in vivo or in vitro environments. Interfaces between biological systems and electronics require devices that are mechanically flexible and stretchable, chemically inert and in some cases biodegradable. Bioelectronics based on organic materials, known as organic bioelectronics, especially promising because promise to yield devices that are able to combine ionic and electronic transport and to offer improved mechanical interfaces with living tissues, due to the soft nature of the polymer surface.
520 $a An example of a bioelectronic device is the organic electrochemical transistor (OECT), which has found applications in biosensors and implantable devices. OECTs are attractive because of their ability to operate at low voltages (< 1 V) in aqueous solutions, where biological processes take place. OECTs can be composed solely of conducting polymers and consist of source and drain electrodes and a channel in ionic contact with a gate electrode via an electrolyte solution.
520 $a The gate voltage modulates the current flowing in the channel. In most OECTs, the application of a positive gate bias induces a reversible redistribution of positive ions within the conducting polymer channel and the electrolyte. This, together with charge injection from source and drain, results in electrochemical dedoping of the conducting channel, accompanied by a decrease of the source-drain current.
520 $a In this thesis, we have fabricated rigid, flexible and degradable OECTs on glass, plastics and degradable shellac substrates. Unconventional techniques such as parylene patterning and orthogonal photolithography have been used for device fabrication. These processing techniques let us avoid placing organic materials in contact with other materials (such as photoresists, solvents and strippers) typically used in photolithography, which can result in the degradation of the electrical properties of the organics. To understand how OECTs work and to optimize their performance, we have investigated the role of their main components (electrolyte, gate electrode and substrate). Moreover, we have realized a flexible device integrating a transistor and a supercapacitor, for applications in energy micro-storage. (Abstract shortened by ProQuest.).
520 $a La bioelectronique est un domaine pluridisciplinaire dont l'objectif est le couplage des dispositifs electroniques avec les systemes biologiques. La bioelectronique vise l'exploitation des dispositifs electroniques pour des applications biologiques, comme les systemes de livraison de medicament implantables, la peau artificielle, ou encore les capteurs capables d'operer in vivo ou in vitro. Les interfaces entre la biologie et l'electronique necessitent des dispositifs qui soient a la fois mecaniquement flexibles et etirables, chimiquement inertes, ainsi que, dans certains cas, biodegradables. La bioelectronique basee sur des materiaux organiques, ou bioelectronique organique, donne les moyens technologiques de produire des dispositifs electroniques mecaniquement flexibles ou degradables, le tout a faible cout sur de larges surfaces.
520 $a Les recherches intensives dans le domaine de l'electronique organique ont commence dans les annees '90, avec les premieres diodes electroluminescentes, transistors ainsi que cellules photovoltaiques bases sur des materiaux organiques. Les dispositifs electroniques organiques deviennent omnipresents dans notre societe moderne avec l'introduction sur le marche d'ecrans bases sur l'utilisation de diodes electroluminescentes pour les telephones cellulaires, les televisions et d'autres produits commerciaux. D'autres dispositifs electroniques organiques, tels que les transistors organiques pour les tags d'identification radiofrequence, devraient faire a leur tour une entree sur le marche dans un futur proche. Les materiaux organiques electroniques presentent plusieurs avantages sur leurs homologues inorganiques, ce qui les rend plus adaptes a certaines applications specifiques. L'un des avantages les plus importants reside sans doute dans la capacite des materiaux organiques electroniques a transporter les porteurs de charge ioniques et electroniques, pour pouvoir developper de nouveaux dispositifs faisant l'interface avec les systemes biologiques. Le transistor organique electrochimique (OECT), qui a trouve de nombreuses applications dans les biocapteurs ou dans les dispositifs implantables, en est un bon exemple. Les OECTs offrent la capacite prometteuse a operer a de faibles voltages (<1 V) en solutions aqueuses, ou les procedes biologiques ont lieu. Les OECTs peuvent etre realises entierement a l'aide de polymeres conducteurs et sont composes d'electrodes appelees source et drain, ainsi que d'un canal en contact ionique avec une electrode appelee grille via une solution electrolytique. Le potentiel applique a la grille module le courant qui circule dans le canal. Dans la plupart des OECTs, l'application d'une difference de potentiel positive a la grille induit une redistribution reversible des ions positifs a l'interieur du polymere conducteur composant le canal, ainsi qu'a l'interieur de l'electrolyte. Ceci, couple avec l'injection de charges par la source et le drain, resulte en un dedopage electrochimique du canal conducteur, qui s'accompagne d'une diminution du courant source-drain.
520 $a Dans cette these, nous decrivons la fabrication de differents types d'OECTs, rigides, flexibles ou encore degradables, sur des substrats de verre, de plastique ou de shellac degradable. Des techniques non-conventionnelles comme la gravure sur parylene et la photolithographie orthogonale ont ete utilisees pour la fabrication des dispositifs. Ces methodes permettent d'eviter le contact direct entre les materiaux organiques et d'autres materiaux (i.e. les photoresines, les solvants et les decapants) typiquement utilises en photolithographie, evitant ainsi une degradation des proprietes electriques. Afin de mieux comprendre le mecanisme de fonctionnement des OECTs, qui est toujours largement meconnu, ainsi que d'optimiser leurs performances, nous avons etudie le role de leurs composants cle, i.e. l'electrolyte, l'electrode de grille et le substrat. Nous avons aussi explore la possibilite de fabriquer un dispositif flexible integrant un transistor et un supercondensateur, qui pourrait etre interessant pour des applications dans le domaine du micro-stockage d'energie. (Abstract shortened by ProQuest.).
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Chemical engineering. $3 555952
650 4 $a Materials science. $3 557839
655 7 $a Electronic books. $2 local $3 554714
690 $a 0542
690 $a 0794
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Ecole Polytechnique, Montreal (Canada). $3 845478
773 0 $t Dissertation Abstracts International $g 75-01C.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10609455 $z click for full text (PQDT)