English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

We consider electronic and optical properties of group III-Nitride monolayersusing first-principle calculations. The group III-Nitride monolayers have flathexagonal structures with almost zero planar buckling, $\Delta$. By tuning the$\Delta$, the strong $\sigma\text{-}\sigma$ bond through sp$^2$ hybridizationof a flat form of these monolayers can be changed to a stronger$\sigma\text{-}\pi$ bond through sp$^3$ hybridization. Consequently, the bandgaps of the monolayers are tuned due to a dislocation of the $s$- and$p$-orbitals towards the Fermi energy. The band gaps decrease with increasing$\Delta$ for those flat monolayers, which have a band gap greater than $1.0$eV, while no noticeable change or a flat dispersion of the band gap is seen forthe flat monolayers, that have a band gap less than $1.0$ eV. The decreasedband gap causes a decrease in the excitation energy, and thus the staticdielectric function, refractive index, and the optical conductivity areincreased. In contrast, the flat band gap dispersion of few monolayers in thegroup III-Nitride induces a reduction in the static dielectric function, therefractive index, and the optical conductivity. We therefore confirm thattuning of the planar buckling can be used to control the physical properties ofthese monolayers, both for an enhancement and a reduction of the opticalproperties. These results are of interest for the design of optoelectricdevices in nanoscale systems.

Study of the buckling effects on the electrical and optical properties of the group III-Nitride monolayers