UV tuning of cadmium telluride quantum dots (CdTe) - assessed by spectroscopy and electrochemistry

Kód výsledku v IS VaVaI

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RIV/62156489:43410/15:43907003

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

UV tuning of cadmium telluride quantum dots (CdTe) - assessed by spectroscopy and electrochemistry

Popis výsledku v původním jazyce

In this work the electrochemical analysis (potentiometric stripping analysis - PSA, cyclic voltammetry - CV) and evaluation of fluorescence properties of CdTe - QDs were performed. Using CV it was found that average value of AE of QDs is lower than 0.059V and I is in direct correlation with square root of scan rates, therefore we assume that this system represents rather reversible than quasi-reversible process. Further, it was found that nearly 1.4 electrons are exchanged in both cases, which corresponded with expected electron transfer. Fluorescence analysis showed that UV radiation (254 and 312 nm) sig-nificantly changes fluorescence properties of CdTe in time 0 - 60 min. It was found that after 5 min of UV irradiation (X = 312 nm) the fluorescenceintensity increased by 37% and at X=254 nm the increase in fluorescence intensity was even bigger, by 45% (compared to the cont-rol without irradiation). UV radiation also caused a shift in the emission maximum of CdTe - QDs by approxima

Název v anglickém jazyce

UV tuning of cadmium telluride quantum dots (CdTe) - assessed by spectroscopy and electrochemistry

Popis výsledku anglicky

In this work the electrochemical analysis (potentiometric stripping analysis - PSA, cyclic voltammetry - CV) and evaluation of fluorescence properties of CdTe - QDs were performed. Using CV it was found that average value of AE of QDs is lower than 0.059V and I is in direct correlation with square root of scan rates, therefore we assume that this system represents rather reversible than quasi-reversible process. Further, it was found that nearly 1.4 electrons are exchanged in both cases, which corresponded with expected electron transfer. Fluorescence analysis showed that UV radiation (254 and 312 nm) sig-nificantly changes fluorescence properties of CdTe in time 0 - 60 min. It was found that after 5 min of UV irradiation (X = 312 nm) the fluorescenceintensity increased by 37% and at X=254 nm the increase in fluorescence intensity was even bigger, by 45% (compared to the cont-rol without irradiation). UV radiation also caused a shift in the emission maximum of CdTe - QDs by approxima

Druh

D - Stať ve sborníku

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Metallomics Technology Conference 2015. Recent Advances and Strategies: Conference Proceedings

ISBN

978-80-7509-309-7

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

63-67

Název nakladatele

Mendelova univerzita v Brně

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

14. 6. 2015

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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