Investigation of ion transport properties of organic electrochemical transistors
Küçüktartar, Tuğçe, author.

Investigation of ion transport properties of organic electrochemical transistors

Küçüktartar, Tuğçe, author.

Yazar Ek Girişi
Küçüktartar, Tuğçe, author.

Fiziksel Tanımlama
x, 49 leaves: charts;+ 1 computer laser optical disc.

Organic electrochemical transistors (OECTs) comprise large amplification in current response while operating at low voltages and have high transconductance due to its volumetric capacitance created by ion injection from electrolyte through the whole organic semiconductor channel. OECTs are switchable by doping and de-doping of active channel via application of positive or negative gate bias. One of the most common organic material for OECTs is the conductive polymer, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). PEDOT:PSS offers prominent advances because of their coupled electronic and ionic conductance, morphology and optical properties. Although the complex working principle of OECT has been tried to be elaborated with several models in literature, the conduction of ions and electrons in the channel has not been fully elucidated. In this thesis, the transformations between un-doped, doped and de-doped state investigated systematically based on the electrical (OECT), structural and morphological characterization of PEDOT:PSS thin film. Measurements were conducted with different dopant molecules and the repeatability of the device was investigated. As a result, the most stable drain and gate voltage range in which the device works has been determined. In addition, the X-ray photoelectron spectroscopy (XPS) investigation performed which is revealed that the density of the bipolaron formation of PEDOT:PSS in the doped state increase as compared to its natural form in the de-doped state. XPS mapping on OECT devices suggested that ions migration is homogeneously generated by applied bias.

Konu Başlığı
Organic electrochemistry

Yazar Ek Girişi
Yıldız, Ümit Hakan,

Tüzel Kişi Ek Girişi
İzmir Institute of Technology. Chemistry.

Tek Biçim Eser Adı
Thesis (Master)--İzmir Institute of Technology:Chemistry.
İzmir Institute of Technology:Chemistry --Thesis (Master).

Elektronik Erişim
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LibraryMateryal TürüDemirbaş NumarasıYer NumarasıDurumu/İade Tarihi
IYTE LibraryTezT002644QD273 .K95 2022Tez Koleksiyonu