Many-body effects and excitonic features in 2D biphenylene carbon
2016 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 144, no 2, 024702Article in journal (Refereed) PublishedText
The remarkable excitonic effects in low dimensional materials in connection to large binding energies of excitons are of great importance for research and technological applications such as in solar energy and quantum information processing as well as for fundamental investigations. In this study, the unique electronic and excitonic properties of the two dimensional carbon network biphenylene carbon were investigated with GW approach and the Bethe-Salpeter equation accounting for electron correlation effects and electron-hole interactions, respectively. Biphenylene carbon exhibits characteristic features including bright and dark excitons populating the optical gap of 0.52 eV and exciton binding energies of 530 meV as well as a technologically relevant intrinsic band gap of 1.05 eV. Biphenylene carbon's excitonic features, possibly tuned, suggest possible applications in the field of solar energy and quantum information technology in the future.
Place, publisher, year, edition, pages
2016. Vol. 144, no 2, 024702
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-278016DOI: 10.1063/1.4939273ISI: 000368618400036PubMedID: 26772582OAI: oai:DiVA.org:uu-278016DiVA: diva2:906026
FunderKnut and Alice Wallenberg Foundation