Optical absorption of single-layer hexagonal boron nitride in the ultraviolet
| Autor: | C. D. M. Fernandes, J. C. G. Henriques, Nuno M. R. Peres, G. B. Ventura |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Předmět: |
excitons
Exciton Wannier equation 02 engineering and technology medicine.disease_cause 01 natural sciences Molecular physics 0103 physical sciences Monolayer medicine Radiative transfer General Materials Science Graphite hexagonal boron nitride 010306 general physics Quartz Physics chemistry.chemical_classification Science & Technology Biomolecule 021001 nanoscience & nanotechnology Condensed Matter Physics 3. Good health chemistry photoluminescence 0210 nano-technology Ultraviolet |
| Zdroj: | Journal of Physics: Condensed Matter Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 1361-648X 0953-8984 0957-4484 2053-1583 |
| DOI: | 10.1088/1361-648x/ab47b3 |
| Popis: | In this paper we theoretically describe the absorption of hexagonal boron nitride (hBN) single layer. We develop the necessary formalism and present an efficient method for solving the Wannier equation for excitons. We give predictions for the absorption of hBN on quartz and on graphite. We compare our predictions with recently published results (Elias et al 2019 Nat. Commun. 10 2639) for a monolayer of hBN on graphite. The spontaneous radiative lifetime of excitons in hBN is also computed. We argue that the optical properties of hBN in the ultraviolet are very useful for the study of peptides and other biomolecules. The authors would like to thank André Chaves and Bruno Amorim for reading the manuscript, making suggestions, and for discussions on the topic of the paper. NMRP acknowledges support from the European Commission through the project 'Graphene-Driven Revolutions in ICT and Beyond' (Ref. No. 785219), and the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Financing UID/FIS/04650/2019. In addition, NMRP acknowledges COMPETE2020, PORTUGAL2020, FEDER and the Portuguese Foundation for Science and Technology (FCT) through projects PTDC/FIS- NAN/3668/2013 and POCI-01-0145-FEDER-028114, and POCI-01-0145-FEDER-029265 and PTDC/NAN-OPT/29265/2017, the authors also acknowledge the funding of Fundação da Ciência e Tecnologia, of COMPETE 2020 program in the FEDER component (European Union), through the project POCI-01-0145-FEDER-02888. |
| Databáze: | OpenAIRE |
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