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

Layered material heterostructures (LMHs) can be used to fabricateelectroluminescent devices operating in the visible spectral region. A majoradvantage of LMH-light emitting diodes (LEDs) is that electroluminescence (EL)emission can be tuned across that of different exciton complexes (e.g.biexcitons, trions, quintons) by controlling the charge density. However, thesedevices have an EL quantum efficiency as low as$\sim$10$^{-4}$\%. Here, we showthat the superacid bis-(triuoromethane)sulfonimide (TFSI) treatment ofmonolayer WS$_2$-LEDs boosts EL quantum efficiency by over one order ofmagnitude at room temperature. Non-treated devices emit light mainly fromnegatively charged excitons, while the emission in treated ones predominantlyinvolves radiative recombination of neutral excitons. This paves the way totunable and efficient LMH-LEDs

Monolayer WS$_2$ electro- and photo-luminescence enhancement by TFSI treatment