Many-body effects and excitonic features in 2D biphenylene carbon

The Journal of Chemical Physics
Johann LüderBarbara Brena

Abstract

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.

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Citations

Apr 18, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Ruslan MeftakhutdinovAleksey Kochaev
Feb 10, 2017·The Journal of Chemical Physics·R TotaniC Puglia
Feb 28, 2018·Physical Chemistry Chemical Physics : PCCP·Matthew D WardTimothy A Strobel
Jun 12, 2020·Frontiers in Bioengineering and Biotechnology·Hiba MohammedLia Rimondini
Jul 30, 2019·Frontiers in Chemistry·Dorothea GolzePatrick Rinke
Dec 11, 2020·Physical Chemistry Chemical Physics : PCCP·Leonardo Villegas-Lelovsky, Ricardo Paupitz

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