Triazine-based graphitic carbon nitride: a two-dimensional semiconductor

Siller-Algara, Gerardo; Severin, Nikolai; Chong, Samantha Y.; Bj�rkman, Torbj�rn; Palgrave, Robert G.; Laybourn, Andrea; Antonietti, Markus; Khimyak, Yaroslav Z.; Krasheninnikov, Arkady V.; Rabe, J�rgen P.; Kaiser, Ute; Cooper, Andrew I.; Thomas, Arne; Bojdys, Michael J.

Abstract

Graphitic carbon nitride has been predicted to be structurally analogous to carbon-only graphite, yet with an inherent bandgap. We have grown, for the first time, macroscopically large crystalline thin films of triazine-based, graphitic carbon nitride (TGCN) using an ionothermal, interfacial reaction starting with the abundant monomer dicyandiamide. The films consist of stacked, two-dimensional (2D) crystals between a few and several hundreds of atomic layers in thickness. Scanning force and transmission electron microscopy show long-range, in-plane order, while optical spectroscopy, X-ray photoelectron spectroscopy, and density functional theory calculations corroborate a direct bandgap between 1.6 and 2.0 eV. Thus TGCN is of interest for electronic devices, such as field-effect transistors and light-emitting diodes.

Citation

Siller-Algara, G., Severin, N., Chong, S. Y., Björkman, T., Palgrave, R. G., Laybourn, A., Antonietti, M., Khimyak, Y. Z., Krasheninnikov, A. V., Rabe, J. P., Kaiser, U., Cooper, A. I., Thomas, A., & Bojdys, M. J. (2014). Triazine-based graphitic carbon nitride: a two-dimensional semiconductor. Angewandte Chemie International Edition, 53(29), https://doi.org/10.1002/anie.201402191

• Journal Article Type: Article
• Acceptance Date: May 1, 2014
• Online Publication Date: May 18, 2014
• Publication Date: Jul 14, 2014
• Deposit Date: Sep 8, 2017
• Journal: Angewandte Chemie International Edition
• Print ISSN: 1433-7851
• Electronic ISSN: 1521-3773
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 53
• Issue: 29
• DOI: https://doi.org/10.1002/anie.201402191
• Public URL: https://nottingham-repository.worktribe.com/output/732630
• Publisher URL: http://onlinelibrary.wiley.com/doi/10.1002/anie.201402191/abstract
• Contract Date: Sep 8, 2017