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.
| Original language | English |
|---|---|
| Pages (from-to) | 7450-7455 |
| Number of pages | 6 |
| Journal | Angewandte Chemie-International Edition |
| Volume | 53 |
| Issue number | 29 |
| Early online date | 18 May 2014 |
| DOIs | |
| Publication status | Published - 14 Jul 2014 |
Keywords
- carbon nitride
- graphene
- semiconductor
- thin films
Profiles
-
Yaroslav Khimyak
- School of Chemistry, Pharmacy and Pharmacology - Professor in Solid-state NMR
- Physical Chemistry and Pharmaceutics - Member
Person: Research Group Member, Academic, Teaching and Research