Electrical characterization of poly(amide-imide) for application in organic field effect devices

Lopes, Élder Mantovani; Ywata, R. S.; Alves, Neri; Shimizu, Flávio M.; Taylor, D.M.; Watson, Colin P.; Carvalho, Antônio J. F.; Giacometti, J.A.

doi:10.1016/j.orgel.2012.05.058

Cited by 9 publications

(10 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figures 5a and 5b show, respectively, the device capacitance and loss curves as function of frequency for different DC voltages. The observed capacitance variations with frequency indicate the existence of accumulation and depletion regimes as expected for a MIS device [31][32][33][34][35] . On the loss plot, Maxwell-Wagner relaxation peaks are clearly present at around 1 Hz for different applied bias.…”

Section: Ac Electrical Characterization Of Flexible Mis Capacitorssupporting

confidence: 53%

“…The main characteristic of MIS capacitors is that capacitance varies with DC bias [31][32][33][34][35] . The Figure 8 shows the capacitance-voltage curve for the CuTsPc+PVA/Al 2 O 3 MIS device performed at 0.1 Hz.…”

Section: Ac Electrical Characterization Of Flexible Mis Capacitorsmentioning

confidence: 99%

“…To address information about the feasibility of TIJ printed electronic devices, flexible metal-insulator-semiconductor (MIS) capacitors based on copper tetrasulfonated phthalocyanine (CuTsPc) and anodic aluminum oxide (Al 2 O 3 ) were fabricated. The MIS capacitor is the core of OFETs and a powerful tool for electrical characterization of OSC, dielectrics and interfaces [31][32][33][34][35][36] . Its simple structure and versatility allow the extraction of several semiconductor parameters such as conductivity, charge carrier mobility and doping density [31][32][33][34][35] .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermal inkjet printing of copper tetrasulfonated phthalocyanine (CuTsPc) as a semiconducting layer on flexible MIS capacitors

et al. 2014

View full text Add to dashboard Cite

Section: Ac Electrical Characterization Of Flexible Mis Capacitorssupporting

confidence: 53%

Section: Ac Electrical Characterization Of Flexible Mis Capacitorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thermal inkjet printing of copper tetrasulfonated phthalocyanine (CuTsPc) as a semiconducting layer on flexible MIS capacitors

et al. 2014

View full text Add to dashboard Cite

“…1(a)), indium-tin-oxide (ITO) coated glass slides (sheet resistance 15-25 Ω/square, purchased from Delta Technologies) were used as transparent bottom electrodes. The insulating polymer poly(amide-imide), PAI, was synthesized as previously reported in the literature [20]. SU-8 photoresist was purchased from Microchem Ltd, the PSQ precursor (90% phenyl and 10% methyl) from Gelest Inc and P3HT, regioregularity > 98.5%, M W = 87,000 g/mol, from Sigma-Aldrich and used without further purification.…”

Section: Methodsmentioning

confidence: 99%

Interface state contribution to the photovoltaic effect in organic phototransistors: Photocapacitance measurements and optical sensing

Watson

Lopes

Oliveira

et al. 2018

Organic Electronics

Self Cite

View full text Add to dashboard Cite

We report the results of an investigation into the contribution that trapping in interface states makes to the photovoltaic effect observed in organic phototransistors. To isolate this effect from other processes that occur in the transistor structure when under illumination, we focus attention on the photo-response of metal-insulatorsemiconductor (MIS) capacitors-the core structure of transistors. The capacitors comprised poly(3-hexylthiophene), (P3HT), as the active semiconductor in combination with one of three insulators, namely, poly (amide-imide), (PAI), SU-8 photoresist and polysilsesquioxane (PSQ). Following initial characterization in the dark, the capacitor response was measured both during and after irradiation with light in the wavelength range 400-700 nm. Three different approaches were employed to study the photo-response, each providing a different insight into the processes occurring. Capacitance-voltage sweeps before, during and after illumination provided direct evidence supporting the view that the photovoltaic effect occurred as a result of electron trapping in interface states of density up to ∼2 × 10 12 cm −2 in the P3HT/PAI combination but lower for SU-8 and PSQ. The dynamic photo-response, in which device capacitance was held constant by changing the applied bias, showed a fast component related to optically induced photoconduction in the semiconductor and a slower component reflecting the dynamics of interface electron trapping. Finally, photo-induced capacitance changes occurring with constant applied voltage were used to demonstrate a simple 3 × 3 imaging array.

show abstract

“…This condition facilitates the application of alternate current (AC) methods, like admittance spectroscopy, 29 which are more appropriate to measure the interface properties. 30,31 An OFET is a three terminal device, which turns the study of the properties of the insulator and related interfaces more complex. To simplify the analysis, a metal-insulatorsemiconductor (MIS) capacitor, more adequate to study the behavior of charge carriers at interfaces, can be used as investigation tool.…”

Section: Introductionmentioning

confidence: 99%

Study of poly(3-hexylthiophene)/cross-linked poly(vinyl alcohol) as semiconductor/insulator for application in low voltage organic field effect transistors

Benvenho

Machado

Cruz-Cruz

et al. 2013

Journal of Applied Physics

View full text Add to dashboard Cite

In this work we study the cross-linked poly(vinyl alcohol)/poly(3-hexylthiophene) interfacial properties of an organic field effect transistor. We use cross-linked poly(vinyl alcohol) prepared with different ammonium dichromate:poly(vinyl alcohol) proportions, ranging from 0% to 35%, as insulator. Using admittance spectroscopy, we show that the interfacial properties change when the ammonium dichromate concentration is altered. The interfacial properties and the better insulation are responsible for the improvement of the device performance in these organic field effect transistors, achieving best performance in the blend with ammonium dichromate:poly(vinyl alcohol) proportion of 0.25:1.

show abstract

Electrical characterization of poly(amide-imide) for application in organic field effect devices

Cited by 9 publications

References 23 publications

Thermal inkjet printing of copper tetrasulfonated phthalocyanine (CuTsPc) as a semiconducting layer on flexible MIS capacitors

Thermal inkjet printing of copper tetrasulfonated phthalocyanine (CuTsPc) as a semiconducting layer on flexible MIS capacitors

Interface state contribution to the photovoltaic effect in organic phototransistors: Photocapacitance measurements and optical sensing

Study of poly(3-hexylthiophene)/cross-linked poly(vinyl alcohol) as semiconductor/insulator for application in low voltage organic field effect transistors

Contact Info

Product

Resources

About