Capacitive studies of electrodeposited PEDOT-maleimide

Wu, Yuhang; Nagane, Samadhan S.; Sitarik, Peter; Chhatre, Shrirang; Lee, Jung-Hyun; Martin, David C.

doi:10.1039/d2ta00347c

Cited by 8 publications

(10 citation statements)

References 82 publications

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“…5b). [48][49][50] When PEDOT:PSS was mixed with PTSA, it was even more vulnerable under UV irradiation, exhibiting quicker decomposition within 3 hours (Fig. 5c).…”

Section: Resultsmentioning

confidence: 99%

Synthesis and exceptional operational durability of polyaniline-inspired conductive ladder polymers

Leng,

Koripally,

Huang

et al. 2023

Mater. Horiz.

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“…5b). [48][49][50] When PEDOT:PSS was mixed with PTSA, it was even more vulnerable under UV irradiation, exhibiting quicker decomposition within 3 hours (Fig. 5c).…”

Section: Resultsmentioning

confidence: 99%

Synthesis and exceptional operational durability of polyaniline-inspired conductive ladder polymers

Leng,

Koripally,

Huang

et al. 2023

Mater. Horiz.

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“…Besides, the invariant behavior in Fig. 9(b) can be attributed to the dipoles in the device not giving a clear response to the DC signal since the DC signal has a weak electrical trigger compared to the AC signal 39–41 …”

Section: Resultsmentioning

confidence: 99%

“…9(b) can be attributed to the dipoles in the device not giving a clear response to the DC signal since the DC signal has a weak electrical trigger compared to the AC signal. [39][40][41] The dielectric parameters of OFET devices such as the real and imaginary parts of permittivity (ε 0 and ε 00 ), loss tangent (tan ⊐), real and imaginary parts of electric modulus (M 0 and M 00 ) are determined using the following equations: 3).…”

Section: Capacitive and Dielectric Properties Of Ofetsmentioning

confidence: 99%

Synthesis and electrical characterization of poly[(linoleic acid)‐g‐(styrene)‐g‐(ε‐caprolactone)] graft copolymers as gate insulator for OFET devices

Gürel

ÇAVUŞ

Demir

et al. 2023

Polymer International

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This study reports a one‐pot process used to synthesize poly[(linoleic acid)‐g‐(styrene)‐g‐(ε‐caprolactone)] (PLina‐g‐PSt‐g‐PCL) graft copolymers. The process was carried out by combining the atom transfer radical polymerization of styrene with the ring‐opening polymerization of ε‐caprolactone from polymeric linoleic acid having hydroxyl groups and bromine groups in the main chain. The characterization of the products was achieved using proton nuclear magnetic resonance, size‐exclusion chromatography, Fourier transform infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry techniques. Subsequently, an organic field effect transistor (OFET) was fabricated with PLina‐g‐PSt‐g‐PCL graft copolymers as the insulator layer. Poly(3‐hexylthiophene) (P3HT) was used as the active layer and prepatterned OFET substrates were used as the welding/discharge electrodes. To measure capacitance, an ITO/P3HT/PLina‐g‐PSt‐g‐PCL/Al structure was prepared using the same method. To obtain output and transfer current–voltage characteristics, electrical characterizations of OFET devices were conducted in darkness and an atmosphere of air. From a capacitance–frequency plot, the key characteristics of the devices, including the threshold voltage (VTh), field effect mobility, and current on/off ratio (Ion/off), were derived. The fundamental electrical parameters in the fabricated OFET devices based on styrene concentration were thoroughly examined. It was observed that the produced PLina‐g‐PSt‐g‐PCL OFETs display positive device characteristics such as low VTh, exceptional mobility, and Ion/off values. © 2023 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf of Society of Industrial Chemistry.

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“…The measured height of the PEDOT films was defined as a function of position, h ( x ) [blue area in Figure S1 (Supporting Information)], and then the PSD was calculated by taking the fast Fourier transform to determine the power density of the roughness as a function of spatial frequency, k , using Origin software (Figure b). The PSD has a relationship with k as shown by eq for randomly rough surfaces with a self-affine structure over a finite length scale where – β is the power-law decay exponent that is related to the fractal dimension represented the regularity of the film according to eq , …”

Section: Resultsmentioning

confidence: 99%

Electrochemical Fabrication and Characterization of Organic Electrochemical Transistors Using poly(3,4-ethylenedioxythiophene) with Various Counterions

Lee

Chhatre

Sitarik

et al. 2022

ACS Appl. Mater. Interfaces

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Organic electrochemical transistors (OECTs) are promising bioelectronic devices, especially because of their ability to transport charge both ionically and electronically. Conductive polymers are typically used as the active materials of OECTs. Crosslinked, cast, and dried films of commercially available poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PE-DOT:PSS) suspensions are commonly and widely used for OECTs so far. Electrochemical polymerization of PEDOT from 3,4-ethylenedioxythiophene (EDOT) monomer can also be used to fabricate OECTs; however, this approach has not been investigated in as much detail. In particular, the role of various counterions that can be incorporated into the PEDOT films of OECTs has not been systematically studied. Here, we report the electrochemical fabrication and characterization of OECTs using PEDOT with several different counterion salts including lithium perchlorate (LiClO 4 ), sodium p-toluene sulfonate (pTS), and poly(sodium 4-styrene sulfonate) (PSS). We found that the characteristic dimensions of PEDOT films deposited on the electrodes could be precisely controlled by total charge density, with a nominal thickness of about one micron requiring a current density of about 0.6 C/cm 2 regardless of the choice of counterion. The films with the PSS counterion were relatively smooth, while PEDOT films prepared with the pTS and LiClO 4 were much rougher due to the sizes of counterions. The PEDOT films with pTS and PSS grew along the substrate surface (in-plane direction) much faster than with LiClO 4 . The maximum transconductance (g m ) of a PEDOT OECT was 46 mS with pTS as the counterion with the high on-current level (>10 mA) based on the large channel area. These results provide an effective and efficient way to fabricate OECTs with various monomers and additives as active materials in order to modify the device characteristics for further applications.

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Capacitive studies of electrodeposited PEDOT-maleimide

Cited by 8 publications

References 82 publications

Synthesis and exceptional operational durability of polyaniline-inspired conductive ladder polymers

Synthesis and exceptional operational durability of polyaniline-inspired conductive ladder polymers

Synthesis and electrical characterization of poly[(linoleic acid)‐g‐(styrene)‐g‐(ε‐caprolactone)] graft copolymers as gate insulator for OFET devices

Electrochemical Fabrication and Characterization of Organic Electrochemical Transistors Using poly(3,4-ethylenedioxythiophene) with Various Counterions

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