Extreme electrochemical doping of a graphene-polyelectrolyte heterostructure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F14%3A33152973" target="_blank" >RIV/61989592:15310/14:33152973 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/14:00434833

Výsledek na webu

<a href="http://pubs.rsc.org/en/content/articlepdf/2014/ra/c3ra44780d" target="_blank" >http://pubs.rsc.org/en/content/articlepdf/2014/ra/c3ra44780d</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c3ra44780d" target="_blank" >10.1039/c3ra44780d</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Extreme electrochemical doping of a graphene-polyelectrolyte heterostructure

Popis výsledku v původním jazyce

A doped state of heterostructure, based on chemical vapour deposition grown graphene and polyelectrolytes (polyallylamine hydrochloride and polyacrylic acid), has been studied. The doping was realized electrochemically by application of an electrode potential in LiClO4-acetonitrile electrolyte solution. Our new setup allowed us to achieve extreme doping levels for both positive and negative electrode potentials. The extreme doping of graphene was demonstrated by a large shift of the G mode frequency inthe Raman spectrum. In addition a significant enhancement of the G mode at large positive and also negative electrode potentials has been experimentally observed. The G mode intensity enhancement was attributed to cancelling of a part of the quantum Raman pathways thus reducing the destructive quantum interference effect. Since this effect only occurs if the Fermi level achieves half of the laser excitation energy, experimental observation of this phenomenon also confirms the extreme dop

Název v anglickém jazyce

Extreme electrochemical doping of a graphene-polyelectrolyte heterostructure

Popis výsledku anglicky

A doped state of heterostructure, based on chemical vapour deposition grown graphene and polyelectrolytes (polyallylamine hydrochloride and polyacrylic acid), has been studied. The doping was realized electrochemically by application of an electrode potential in LiClO4-acetonitrile electrolyte solution. Our new setup allowed us to achieve extreme doping levels for both positive and negative electrode potentials. The extreme doping of graphene was demonstrated by a large shift of the G mode frequency inthe Raman spectrum. In addition a significant enhancement of the G mode at large positive and also negative electrode potentials has been experimentally observed. The G mode intensity enhancement was attributed to cancelling of a part of the quantum Raman pathways thus reducing the destructive quantum interference effect. Since this effect only occurs if the Fermi level achieves half of the laser excitation energy, experimental observation of this phenomenon also confirms the extreme dop

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

RSC Advances (online)

ISSN

2046-2069

e-ISSN

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Svazek periodika

4

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

11311-11316

Kód UT WoS článku

000332469500039

EID výsledku v databázi Scopus

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