Depletion-type organic thin-film transistors based on solution-processed iron phthalocyanines fabricated on plastic substrates

Luna, Anayantzi; Obregon, Ovier; Dominguez, Miguel A.

doi:10.1007/s12034-021-02607-y

Cited by 2 publications

(2 citation statements)

References 26 publications

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“…S6c), while in FePc/hCNT-f these peaks are less appreciated. It should be mentioned that the Raman spectrum of unsupported FePc (FePcexp) is in good agreement with that reported in the literature [70]. However, some differences can be distinguished compared to the calculated Raman spectrum for an isolated FePc molecule (FePccomp).…”

Section: Physico-chemical and Morphological Characterization Of Fepc/...supporting

confidence: 86%

P-functionalized carbon nanotubes promote highly stable electrocatalysts based on Fe-phthalocyanines for oxygen reduction: Experimental and computational studies

Martínez-Sánchez

Cazorla‐Amorós

Morallón

2022

Journal of Energy Chemistry

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Section: Physico-chemical and Morphological Characterization Of Fepc/...supporting

confidence: 86%

P-functionalized carbon nanotubes promote highly stable electrocatalysts based on Fe-phthalocyanines for oxygen reduction: Experimental and computational studies

Martínez-Sánchez

Cazorla‐Amorós

Morallón

2022

Journal of Energy Chemistry

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“…[1] Initially discovered in 1907, MPcs have become one of the most ubiquitous blue and green pigments for a variety of applications including textiles and plastics, [2,3] automotive paints, [4] and printing inks. [5] In recent years, their semiconducting properties have enabled their application in electronic devices, including solar cells and photodetectors, [6][7][8] electrochemical sensors, [9][10][11][12] organic thin-film transistors (OTFTs), [12][13][14] and organic light-emitting devices, [15][16][17] among others. The solid-state packing and frontier molecular orbitals of MPcs can vary based on their chemical structure and the processing of the film.…”

Section: Introductionmentioning

confidence: 99%

Electron Donating Functional Polymer Dielectrics to Reduce the Threshold Voltage of n‐Type Organic Thin‐Film Transistors

Ronnasi,

King,

Brixi

et al. 2024

Adv Elect Materials

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Low‐cost and high‐performance electronics based on synthetically simple materials are required to fuel the deployment of smart packaging and wearable electronics. Metal phthalocyanines (MPcs) are promising semiconductors for use in n‐type organic thin film transistors (OTFTs) but often require high operating voltages. The first silicon phthalocyanine‐based OTFT with a polymer dielectric is reported as an alternative to traditional metal oxide dielectrics. Incorporating poly(methyl methacrylate) (PMMA) as the dielectric successfully reduces the threshold voltage (VT) of bispentafluorophenoxy SiPc (F10‐SiPc) from 14.9V to 7.3V while retaining high mobility. Further reduction in VT is obtained by using copolymers and blends of PMMA and dimethylamino ethyl methacrylate (DMAEMA)‐containing polymers, where a higher molar fraction of DMAEMA leads to a consistent drop in VT to ‐0.7 V. The electron‐donating groups of the tertiary amines in the DMAEMA show clear interfacial doping of the semiconductor, reducing the voltage required to populate the dielectric/semiconductor interface with charge carriers and turn on the device. Blending trace amounts of DMAEMA‐containing copolymers with PMMA proves to be an effective strategy for reducing the VT while keeping the charge mobility high, unlike when using pure copolymers with elevated DMAEMA content. Time of flight secondary ion mass spectroscopy (ToF‐SIMS) and X‐ray photoelectron spectroscopy (XPS) demonstrate that the DMAEMA‐containing copolymer is floating to the surface of the PMMA blend at the dielectric–semiconductor interface, which explains the reduced VT. Synchrotron scanning transmission X‐ray microscopy (STXM) demonstrates that PMMA promotes a more edge‐on orientation of F10‐SiPc films, compared to the more face‐on orientation when deposited on the DMAEMA containing copolymer. This study demonstrates a straightforward process for designing dielectric polymers and their blends for the reduction in VT for n‐type OTFTs.

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Depletion-type organic thin-film transistors based on solution-processed iron phthalocyanines fabricated on plastic substrates

Cited by 2 publications

References 26 publications

P-functionalized carbon nanotubes promote highly stable electrocatalysts based on Fe-phthalocyanines for oxygen reduction: Experimental and computational studies

P-functionalized carbon nanotubes promote highly stable electrocatalysts based on Fe-phthalocyanines for oxygen reduction: Experimental and computational studies

Electron Donating Functional Polymer Dielectrics to Reduce the Threshold Voltage of n‐Type Organic Thin‐Film Transistors

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