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 photoluminescence (PL) and absorption experiments have been performed inGaSe slab with incident light polarized perpendicular to c-axis of sample at10K. An obvious energy difference of about 34meV between exciton absorptionpeak and PL peak (the highest energy peak) is observed. By studying thetemperature dependence of PL spectra, we attribute it to energy differencebetween free exciton and bound exciton states, where main exciton absorptionpeak comes from free exciton absorption, and PL peak are attributed torecombination of bound exciton at 10K. This strong bound exciton effect isstable up to 50K. Moreover, the temperature dependence of integrated PLintensity and PL lifetime reveals that a non-radiative process, with activeenergy extracted as 0.5meV, dominates PL emission.

Bound exciton and free exciton states in GaSe thin slab