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

We report emergence of photoluminescence at room temperature in trigonal$Cs_3Bi_2Br_9$ at high pressures. Enhancement in intensity with pressure isfound to be driven by increase in distortion of $BiBr_6$ octahedra andiso-structural transitions. Electronic band structure calculations show thesample in the high pressure phase to be an indirect band gap semiconductor. Theluminescence peak profile show signatures related to the recombination of freeand self trapped excitons, respectively. Blue shift of the both peaks tillabout 4.4 GPa are due to the exciton recombination before relaxation due to thedecrease in exciton lifetime with scattering from phonons

Pressure induced emergence of visible luminescence in $Cs_3Bi_2Br_9$: Effect of structural distortion in optical behaviour