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

In this letter, we report the first observation of dramatic decrease innanosecond (ns) pulsed laser induced transient absorption (TA) ina-GexAs35-xSe65 thin films by tuning the amorphous network from floppy torigid. Our results provide the direct experimental evidence of a self trappedexciton mechanism, where trapping of the excitons occurs through bondrearrangements. Taken together, a rigid amorphous network with more constraintsthan degrees of freedom, are unable to undergo any such bond rearrangements andresults in weaker TA. However, we also demonstrate that excitation fluence canbe effectively utilized as a simple tool to lift up enough constraints tointroduce large TA even in rigid networks. Apart from this, we also show thatTA is tunable with network rigidity as it blueshift when the mean coordinationis increased from 2.35 to 2.6.

Tailoring between network rigidity and nanosecond transient absorption in a-GexAs35-xSe65 thin films