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/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The large tunability of band gaps and optical absorptions of armchair MoS$_2$nanoribbons of different widths under bending is studied using densityfunctional theory and many-body perturbation GW and Bethe-Salpeter equationapproaches. We find that there are two critical bending curvatures, and thenon-edge and edge band gaps generally show a non-monotonic trend with bending.The non-degenerate edge gap splits show an oscillating feature with ribbonwidth n, with a period delta_n=3, due to quantum confinement effects. Thecomplex strain patterns on the bent nanoribbons control the varying features ofband structures and band gaps that result in varying exciton formations andoptical properties. The binding energy and the spin singlet-triplet split ofthe exciton forming the lowest absorption peak generally decrease with bendingcurvatures. The large tunability of optical properties of bent MoS$_2$nanoribbons is promising and will find applications in tunable optoelectronicnanodevices.

Tunable band gaps and optical absorption properties of bent MoS$_2$ nanoribbons