| Texto completo | |
| Autor(es): |
Herrera-Reinoza, Nataly
;
dos Santos, Alisson Ceccatto
;
de Lima, Luis Henrique
;
Landers, Richard
;
de Siervo, Abner
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CHEMISTRY OF MATERIALS; v. 33, n. 8, p. 12-pg., 2021-03-24. |
| Resumo | |
Monolayer hexagonal boron-nitrogen-carbon (h-BNC) is considered a prominent candidate for the next generation of semiconductor electronic devices. Nevertheless, experimental evidence of h-BNC formation is limited, including a detailed study of its morphological and electronic properties. Here, successful growth of h-BNC from an unexplored single molecular precursor (hexamethyl borazine, C6H18B3N3) using a conventional CVD approach on Ir(111) is reported. The conformation structure of the monolayer and its correlation with the local electronic properties are discussed based on scanning tunneling microscopy/spectroscopy (STM/STS) and X-ray photoelectron spectroscopy (XPS) results. The results show an h-BNC structure that can be described as BN-doped graphene since the moire ' lattice parameter is preserved along with the alloy. This BN-doped cluster, renamed as h-BN "nanodonuts" according to the electronic density exhibited in STM images, have a tendency to place specific positions within the moire superstructure, and it is constituted by at least (BN)(8) units arranged in a 6-fold BN rings conformation, as evidenced by simulation of STM images based on density functional theory (DFT). For a BN concentration of about 17%, a band gap between 1.4 and 1.6 eV was determined. The versatility of the novel molecular precursor is proven by the growth of a high-quality h-BN monolayer on Rh(111). (AU) | |
| Processo FAPESP: | 07/08244-5 - Estudo das propriedades magnéticas de filmes ultrafinos e nanopartículas de Pd e PdAu via XMCD |
| Beneficiário: | Abner de Siervo |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 16/21402-8 - Crescimento e caracterização de heteroestruturas bidimensionais: dicalcogenetos de metais de transição sobre grafeno e nitreto de boro hexagonal |
| Beneficiário: | Luis Henrique de Lima |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 07/54829-5 - Estrutura eletrônica e geométrica de nano materiais: um estudo por radiação sincroton |
| Beneficiário: | Richard Landers |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |