High‐Performance UV–Vis–NIR Photodetectors Based on PEDOT Obtained by Plasma‐Enhanced Chemical Vapor Deposition

physica status solidi (a), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

This study presents the fabrication of organic UV–vis–NIR photodetectors based on poly(3,4‐ethylenedioxythiophene) (PEDOT) thin films synthesized via a plasma‐enhanced chemical vapor deposition at 10, 20, and 30 W plasma power. The effects power polymerization, as well optical, structural, morphological, optoelectronic properties, are analyzed using UV–vis, Fourier transform infrared spectroscopy, scanning electron microscope, microscopy–energy‐dispersive X‐ray. films, exhibiting bandgap 3.52–3.59 eV, uniformly coated Si surfaces. Photodiode photodetector performance is evaluated through current–voltage current–transient measurements under varying light intensities wavelengths. PEDOT 10 exhibit superior performance, with maximum responsivity detectivity 0.0975 A −1 1.65 × 1 0 cm Hz 0.5 900 nm, noise‐equivalent 5.38 − 2 / . Maximum external quantum efficiency recorded 23.975% 450 nm. These results emphasize suitability low‐power for applications due to their morphology characteristics.

Language: Английский

---

Fabrication of Conjugated Conducting Polymers by Chemical Vapor Deposition (CVD) Method

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(6), P. 452 - 452

Published: March 16, 2025

Chemical vapor deposition (CVD) is a highly adaptable manufacturing technique used to fabricate high-quality thin films, making it essential across numerous industries. As materials fabrication processes progress, CVD has advanced enable the precise of both inorganic 2D materials, such as graphene and transition metal dichalcogenides, polymeric offering excellent conformality nanostructure control on wide range substrates. Conjugated conducting polymers have emerged promising for next-generation electronic, optoelectronic, energy storage devices due their unique combination electrical conductivity, optical transparency, ionic transport, mechanical flexibility. Oxidative (oCVD) involves spontaneous reaction oxidant monomer vapors upon adsorption onto substrate surface, resulting in step-growth polymerization that commonly produces or semiconducting polymer films. oCVD gained significant attention its ability conjugated under vacuum conditions, allowing over film thickness, doping levels, engineering. The low moderate temperature method enables direct integration films thermally sensitive substrates, including plants, paper, textiles, membranes, carbon fibers, graphene. This review explores fundamentals process vacuum-based manufacturing, while also highlighting recent advancements

Language: Английский

---

Enhanced Carrier Mobility and Thermoelectric Performance by Nanostructure Engineering of PEDOT Thin Films Fabricated via the OCVD Method Using SbCl₅ Oxidant

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Abstract Air‐stable, lightweight, and electrically conductive conjugated polymers have attracted significant attention for thermoelectric applications, especially in low‐temperature environments. However, their low carrier mobility has limited broader adoption. This study addresses this challenge by investigating the nanostructure of poly(3,4‐ethylenedioxythiophene) (PEDOT) thin films fabricated via oxidative chemical vapor deposition (oCVD) at various temperatures. Through systematic control semi‐crystalline orientation π–π stacking distance, a substantial enhancement (23.58 ± 1.71 cm 2 V −1 s ) electrical conductivity (6345 210 S is achieved. The power factor demonstrates direct correlation with temperature, achieving maximum value 112.57 4.33 µW m K −2 . PEDOT higher temperatures show minimal reductions as absolute temperature decreased, reflecting lower resistivity ratio extended metallic state, indicated metal–insulator transition Zabrodskii plot. Incorporating Seebeck coefficient into parabolic energy band diagram revealed strong agreement between theoretical experimental mobility, while also indicating that barrier intercrystalline charge transport decreases increases. highly face‐on reduced distance facilitate quasi‐1D conduction, thereby enhancing mobility.

Language: Английский

---

Facile Design of NiO-rGO/Mo2Ti2C3 Ternary Composites for Electrochemical Detection of Dopamine

Synthetic Metals, Journal Year: 2025, Volume and Issue: unknown, P. 117876 - 117876

Published: April 1, 2025

Language: Английский

---

Voltammetric detection of chlorogenic acid by Poly(3,4-ethylene-dioxythiophene) electrodes

Journal of Electroanalytical Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 118736 - 118736

Published: Oct. 1, 2024

Language: Английский

---

An Innovative Ta3N5-TaON-PPY-CO-PEDOT Nanocomposite: Enhanced Electrocatalytic Sensing of Oxfendazole and Photocatalytic Dye Degradation of Malachite Green

Journal of Inorganic and Organometallic Polymers and Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 9, 2024

Language: Английский

---

Highly Conductive and Uniform PEDOT on Poly(acrylic acid-vinylbenzyl chloride) Functionalized Surfaces

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: unknown, P. 105320 - 105320

Published: Oct. 1, 2024

Language: Английский

---