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Description:

A low-cost 2D metal-free material based on a graphitic carbon nitride (g-C3N4) film functionalized with a citric acid molecule has been successfully fabricated by Electrophoretic Deposition (EPD) and thermal techniques, aiming to evaluate its suitability for optoelectronic devices. The thickness-controlled g-C3N4 film having a good mechanical property was successfully performed. The chemical stability and photostability of the citric-modified g-C3N4 films deposited on indium tin oxide (ITO) glass were investigated. New chemical links were clarified such that it could possibly become a bridge for enhancing charge transport. The modified samples exhibited a significant increase in their photocurrent response, reaching 25 μA/cm² at a thickness of about 20 μm. Electrochemical impedance spectra (EIS) verified the enhanced conductivity, efficient charge transfer, and reduced electron-hole recombination rate. This research revealed a facile synthetic route and environmentally benign materials, thereby suggesting promising prospects for their application in the optoelectronic field.

Rights:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

Keyword: Graphitic carbon nitride, Citric acid, Electrophoretic deposition, Chemical interaction, Optoelectronic device

Date published: 2024-04-29

Publisher: Elsevier BV

Journal:

• Advanced Powder Technology (ISSN: 09218831) vol. 35 issue. 5 104460

Funding:

• National Institute for Materials Science
• Institute for the Promotion of Teaching Science and Technology
• Ministry of Education

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1016/j.apt.2024.104460

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Updated at: 2024-12-18 16:31:09 +0900

Published on MDR: 2024-12-18 16:31:09 +0900