Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters

The bandgap of nanostructures usually follows the bulk value upon temperature change. Here, the authors find that in small nanocrystals a weakening of the bonds due to optical excitation causes a pronounced phonon shift, leading to a drastic enhancement of the bandgap’s temperature dependence.

Guardado en:

Detalles Bibliográficos
Autores principales:	Franziska Muckel, Severin Lorenz, Jiwoong Yang, Taufik Adi Nugraha, Emilio Scalise, Taeghwan Hyeon, Stefan Wippermann, Gerd Bacher
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Science Q
Acceso en línea:	https://doaj.org/article/e33292bd4c844f4a9e17e51bcdfbcdc0
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e33292bd4c844f4a9e17e51bcdfbcdc0
record_format	dspace
spelling	oai:doaj.org-article:e33292bd4c844f4a9e17e51bcdfbcdc02021-12-02T17:08:26ZExciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters10.1038/s41467-020-17563-02041-1723https://doaj.org/article/e33292bd4c844f4a9e17e51bcdfbcdc02020-08-01T00:00:00Zhttps://doi.org/10.1038/s41467-020-17563-0https://doaj.org/toc/2041-1723The bandgap of nanostructures usually follows the bulk value upon temperature change. Here, the authors find that in small nanocrystals a weakening of the bonds due to optical excitation causes a pronounced phonon shift, leading to a drastic enhancement of the bandgap’s temperature dependence.Franziska MuckelSeverin LorenzJiwoong YangTaufik Adi NugrahaEmilio ScaliseTaeghwan HyeonStefan WippermannGerd BacherNature PortfolioarticleScienceQENNature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Science Q
spellingShingle	Science Q Franziska Muckel Severin Lorenz Jiwoong Yang Taufik Adi Nugraha Emilio Scalise Taeghwan Hyeon Stefan Wippermann Gerd Bacher Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters
description	The bandgap of nanostructures usually follows the bulk value upon temperature change. Here, the authors find that in small nanocrystals a weakening of the bonds due to optical excitation causes a pronounced phonon shift, leading to a drastic enhancement of the bandgap’s temperature dependence.
format	article
author	Franziska Muckel Severin Lorenz Jiwoong Yang Taufik Adi Nugraha Emilio Scalise Taeghwan Hyeon Stefan Wippermann Gerd Bacher
author_facet	Franziska Muckel Severin Lorenz Jiwoong Yang Taufik Adi Nugraha Emilio Scalise Taeghwan Hyeon Stefan Wippermann Gerd Bacher
author_sort	Franziska Muckel
title	Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters
title_short	Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters
title_full	Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters
title_fullStr	Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters
title_full_unstemmed	Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters
title_sort	exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/e33292bd4c844f4a9e17e51bcdfbcdc0
work_keys_str_mv	AT franziskamuckel excitondrivenchangeofphononmodescausesstrongtemperaturedependentbandgapshiftinnanoclusters AT severinlorenz excitondrivenchangeofphononmodescausesstrongtemperaturedependentbandgapshiftinnanoclusters AT jiwoongyang excitondrivenchangeofphononmodescausesstrongtemperaturedependentbandgapshiftinnanoclusters AT taufikadinugraha excitondrivenchangeofphononmodescausesstrongtemperaturedependentbandgapshiftinnanoclusters AT emilioscalise excitondrivenchangeofphononmodescausesstrongtemperaturedependentbandgapshiftinnanoclusters AT taeghwanhyeon excitondrivenchangeofphononmodescausesstrongtemperaturedependentbandgapshiftinnanoclusters AT stefanwippermann excitondrivenchangeofphononmodescausesstrongtemperaturedependentbandgapshiftinnanoclusters AT gerdbacher excitondrivenchangeofphononmodescausesstrongtemperaturedependentbandgapshiftinnanoclusters
_version_	1718381589137719296

Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters

Ejemplares similares