Organic Based Flexible Speaker Through Enhanced Conductivity of PEDOT/PSS with Various Solvents

Lee, C.S.; Kim, J.Y.; Lee, D.E.; Koo, Yiu.; Joo, Jin; Han, Sung Hee; Beag, Y. W.; Koh, Seok‐Keun

doi:10.1016/s0379-6779(02)01026-3

Cited by 44 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mechanisms of increasing electrical conductivity with adding dielectric solvent in PEDOT:PSS solution have been investigated earlier by other researchers. 15,18,27 It is believed that the reorientation of the PEDOT-PSS chains 14,18 and strong screening effects between the PEDOT and PSS dopant caused by DMSO are responsible for the improvement of electrical conductivity. 15 In the present experiments, the highest electrical conductivity, 298.52 S/cm, occurred with a DMSO concentration of about 5 wt.%.…”

Section: Commercial Pedot/pss With Variable Dmso Concentrationmentioning

confidence: 99%

“…It was postulated that the PSS polymer blocks carrier transport within the PEDOT chain, which would account for the high Seebeck coefficient when DMSO was not used. Without the screening of the polar DMSO solvent, the positively charged PEDOT and negatively charged PSS dopant 15,27 interacted with each other strongly and the PEDOT chain was highly convoluted. The surrounding PSS may block or scatter the transport of some polarons/bi-polarons in the PEDOT chain and allow the transport of polarons/ bi-polarons within a certain energy band or with a certain lattice distortion pattern.…”

Section: Commercial Pedot/pss With Variable Dmso Concentrationmentioning

confidence: 99%

See 1 more Smart Citation

The Thermoelectric Performance of Poly(3,4-ethylenedi oxythiophene)/Poly(4-styrenesulfonate) Thin Films

Chang

Jeng

Yang

et al. 2009

Journal of Elec Materi

110

View full text Add to dashboard Cite

The thermoelectric performance of synthetic conductive polymers, poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) (PEDOT/PSS), is explored. The effects of the dielectric solvent, dimethyl sulfoxide (DMSO), and of the ratio of PEDOT to PSS in the polymeric PEDOT/PSS thin films were studied systematically. Within the parameter range studied in this work, the variation of electrical conductivity overwhelmed the variation of the Seebeck coefficient, and the optimal power factor is basically determined by the highest electrical conductivity, because the Seebeck coefficient remains small over a wide range of DMSO concentrations and PEDOT:PSS ratios.

show abstract

Section: Commercial Pedot/pss With Variable Dmso Concentrationmentioning

confidence: 99%

Section: Commercial Pedot/pss With Variable Dmso Concentrationmentioning

confidence: 99%

The Thermoelectric Performance of Poly(3,4-ethylenedi oxythiophene)/Poly(4-styrenesulfonate) Thin Films

Chang

Jeng

Yang

et al. 2009

Journal of Elec Materi

110

View full text Add to dashboard Cite

show abstract

“… 155 − 157 In their pristine form, films cast from these dispersions typically incur low conductivity values (0.1–1 S cm –1 ), thus rendering them unsuitable for most electronic applications. 50 , 99 , 103 , 158 The addition of molecular additives, such as common organic solvents (e.g. ethylene glycol (EG), glycerol, N -methylpyrrolidone, DMSO, etc.)…”

Section: Organic Mixed Ionic-electronic Conductor Classesmentioning

confidence: 99%

Semiconducting Polymers for Neural Applications

et al. 2022

View full text Add to dashboard Cite

Electronically interfacing with the nervous system for the purposes of health diagnostics and therapy, sports performance monitoring, or device control has been a subject of intense academic and industrial research for decades. This trend has only increased in recent years, with numerous high-profile research initiatives and commercial endeavors. An important research theme has emerged as a result, which is the incorporation of semiconducting polymers in various devices that communicate with the nervous system—from wearable brain-monitoring caps to penetrating implantable microelectrodes. This has been driven by the potential of this broad class of materials to improve the electrical and mechanical properties of the tissue–device interface, along with possibilities for increased biocompatibility. In this review we first begin with a tutorial on neural interfacing, by reviewing the basics of nervous system function, device physics, and neuroelectrophysiological techniques and their demands, and finally we give a brief perspective on how material improvements can address current deficiencies in this system. The second part is a detailed review of past work on semiconducting polymers, covering electrical properties, structure, synthesis, and processing.

show abstract

“…That is attributed to the treatment-induced change on the vertical structure of PEDOT:PSS films. Highly conductive PEDOT:PSS films have been reported as a replacement for ITO in the transparent electrode of PLEDs and PSCs [6][7][8][9][10][11][12][13][14][15][16][17][18][101][102][103][104][105].…”

Section: Application Of Pedot:pss For Optoelectronic Devicesmentioning

confidence: 99%

Transparent Conducting Polymers

Xia

Ouyang

2015

Lecture Notes in Chemistry

View full text Add to dashboard Cite

A conjugated polymer in neutral state is semiconductive. It becomes conductive after it is doped by oxidation or reduction. The optical properties of neutral conjugated polymers are predominantly determined by the electron transition from the highest occupied molecular orbital (HOMO) to the lowest unoccupied molecular orbital (LUMO), whereas the optical properties of conducting polymers are related to new energy levels, polaron and bipolaron levels, which are generated during oxidation or reduction. The appearance of the new energy levels significantly changes the optical properties. Some conjugated polymers with low energy band gap can have high transparency in the visible range after they are oxidized and become conductive. Poly(3,4-ethylenedioxythiophene) (PEDOT), its derivatives and analogues are the most popular transparent conducting polymers. This chapter reviews the preparation, structure, properties, and application of transparent conducting polymers, particularly the PEDOTs. PEDOTs can be prepared by solution chemical polymerization, vapor-phase polymerization, or electrochemical polymerization of its monomer. Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) prepared by chemical polymerization in solution is particularly interesting because it can be dispersed in water and some polar organic solvents. High-quality PEDOT:PSS films can be readily prepared through solution processing techniques. Less conductive PEDOT:PSS has been used as the buffer layer in optoelectronic devices, such as organic and polymer light-emitting diodes (OLEDs and PLEDs) and organic and polymer solar cells (OSCs and PSCs). However, as-prepared PEDOT:PSS films from aqueous solution cannot be directly used as the transparent electrode of optoelectronic devices because its conductivity is below 1 S cm −1 . This conductivity is lower than the conductivity of indium tin oxide (ITO), the conventional transparent electrode material, by three to four orders of magnitude. A couple of methods have been developed to improve significantly

show abstract

Organic Based Flexible Speaker Through Enhanced Conductivity of PEDOT/PSS with Various Solvents

Cited by 44 publications

References 0 publications

The Thermoelectric Performance of Poly(3,4-ethylenedi oxythiophene)/Poly(4-styrenesulfonate) Thin Films

The Thermoelectric Performance of Poly(3,4-ethylenedi oxythiophene)/Poly(4-styrenesulfonate) Thin Films

Semiconducting Polymers for Neural Applications

Transparent Conducting Polymers

Contact Info

Product

Resources

About