Influence of precursors and growth conditions on defect states in ZnO nanorods

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of precursors and growth conditions on defect states in ZnO nanorods

Popis výsledku v původním jazyce

EPR, TSL, radioluminescence (RL) and photoluminescence (PL) methods were engaged in investigation of ZnO nanorods. In the sample of the best purity grown from “fresh” starting materials, only the signal at 1.96 g factor was observed in EPR spectra as well as in the commercial one (shown in Fig. 1) whereas, the other two exhibit also some other resonances probably partly coming from residuals. All the samples were irradiated with X-rays, demonstrating change in the g = 1.96 signal intensity. This corresponds to the electron trapping processes in the materials at the same type oxygen vacancies as assumed above. Consequent stepwise (pulse) annealing up to 300 ºC removed the extra intensity of the resonances making evidence of the trapped electron deliberation. EPR intensity is directly proportional to the paramagnetic particles concentration.

Název v anglickém jazyce

Influence of precursors and growth conditions on defect states in ZnO nanorods

Popis výsledku anglicky

EPR, TSL, radioluminescence (RL) and photoluminescence (PL) methods were engaged in investigation of ZnO nanorods. In the sample of the best purity grown from “fresh” starting materials, only the signal at 1.96 g factor was observed in EPR spectra as well as in the commercial one (shown in Fig. 1) whereas, the other two exhibit also some other resonances probably partly coming from residuals. All the samples were irradiated with X-rays, demonstrating change in the g = 1.96 signal intensity. This corresponds to the electron trapping processes in the materials at the same type oxygen vacancies as assumed above. Consequent stepwise (pulse) annealing up to 300 ºC removed the extra intensity of the resonances making evidence of the trapped electron deliberation. EPR intensity is directly proportional to the paramagnetic particles concentration.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Extended Abstract Book of international conference Progress in Applied Surface - SURFINT-SREN VI

ISBN

978-80-223-4811-9

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

18-19

Název nakladatele

Comenius University

Místo vydání

Bratislava

Místo konání akce

Florence

Datum konání akce

18. 11. 2019

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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