Theoretical modelling of the frequency-dependent phase shift between emission and excitation in ZnO nanorod photoluminescence spectra

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

Theoretical modelling of the frequency-dependent phase shift between emission and excitation in ZnO nanorod photoluminescence spectra

Popis výsledku v původním jazyce

Hydrothermally growth, zinc oxide (ZnO) nanocrystals are known for their interesting scintillation and photocatalytic properties. In our previous paper we presented an optical setup for measuring spectrally resolved photoluminescence (PL) mean decay time using conventional UVLED with sinusoidal excitation and a phase shift method with about 10 ns time resolution, recently upgraded to 1 ns. Photoluminescence decay is the process by which the excited state of a material, induced by the absorption of photons, returns to the ground state, emitting light in the process. This process can be measured in time domain, with the decay rate indicating how quickly the material returns to its ground state after excitation, or equivalently in frequency domain, with the difference between the phase of the light wave at the moment of excitation and the phase of the light wave at the moment of emission. Here we report on the theoretical modelling of the frequency-dependent phase shift between emission and excitation in photoluminescence spectra of ZnO nanorods.

Název v anglickém jazyce

Theoretical modelling of the frequency-dependent phase shift between emission and excitation in ZnO nanorod photoluminescence spectra

Popis výsledku anglicky

Hydrothermally growth, zinc oxide (ZnO) nanocrystals are known for their interesting scintillation and photocatalytic properties. In our previous paper we presented an optical setup for measuring spectrally resolved photoluminescence (PL) mean decay time using conventional UVLED with sinusoidal excitation and a phase shift method with about 10 ns time resolution, recently upgraded to 1 ns. Photoluminescence decay is the process by which the excited state of a material, induced by the absorption of photons, returns to the ground state, emitting light in the process. This process can be measured in time domain, with the decay rate indicating how quickly the material returns to its ground state after excitation, or equivalently in frequency domain, with the difference between the phase of the light wave at the moment of excitation and the phase of the light wave at the moment of emission. Here we report on the theoretical modelling of the frequency-dependent phase shift between emission and excitation in photoluminescence spectra of ZnO nanorods.

Druh

O - Ostatní výsledky

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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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