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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The scattering of lattice excitations (phonons) with the photoexcited chargecarriers is of a major concern in optoelectronic devices. Here, the resonantRaman scattering will be utilized to study an exciton-phonon interaction in GaNnanocrystals, further enhanced by the underlying graphene. Raman spectroscopyusing various excitation energies shows how the exciton-phonon interactionbehaves, unveiling the scattering strength. The origin of the interaction is inthe condition of resonance, which is directly observed in the temperatureresolved spectra. Most importantly, the underlying graphene strongly enhancesthe coupling of phonons and excitons. Consequently, an enhanced resonant Ramanspectrum of GaN nanocrystals possessing clearly observable phonon overtones upto the 4th order has been obtained. It has been demonstrated that theresponsible effect is the electron transfer between nanocrystals and theunderlying graphene. The utilization of such an increased coupling effect canbe beneficial for a study of the charge carrier scattering in semiconductingnanomaterials, analysis of their crystal quality, improvement of sensorsensitivity and in the subsequent development of new-generation optoelectronicdevices.

Graphene Enhanced Resonant Raman Spectroscopy of Gallium Nitride Nanocrystals