Study on the luminescence and energy level of lanthanide ions in Lu0.8 Sc0.2BO3 host

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00437606" target="_blank" >RIV/68378271:_____/11:00437606 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/jp209017w" target="_blank" >http://dx.doi.org/10.1021/jp209017w</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/jp209017w" target="_blank" >10.1021/jp209017w</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study on the luminescence and energy level of lanthanide ions in Lu0.8 Sc0.2BO3 host

Popis výsledku v původním jazyce

Emission and excitation spectra of undoped and Ln(3+) (Ln = Ce, Pr, Nd, Yb)-doped Lu0.8Sc0.2BO3 were studied by vacuum ultraviolet spectroscopy, and the X-ray excited luminescence spectra were measured as well at room temperature. The undoped specimen presented two different emissions upon excitation at energies in the vicinity of the band gap or with X-ray. The emission at the highest energy side, located at 4.77 eV, was ascribed to self-trapped exciton, which is anchored by electron capture around theSc site. We also observed three broad emission bands at 4.43, 3.02, and 2.10 eV, which might be attributed to the trapped exciton, defect - related emissions, or both. Energy transfer processes to the doped lanthanide ions in Lu0.8Sc0.2BO3 via exciton state or sequential electron-hole capture are discussed. Finally, the energy level diagram for divalent and trivalent lanthanides in Lu0.8Sc0.2BO3 was constructed using the obtained spectroscopic parameters and the three parameters method

Název v anglickém jazyce

Study on the luminescence and energy level of lanthanide ions in Lu0.8 Sc0.2BO3 host

Popis výsledku anglicky

Emission and excitation spectra of undoped and Ln(3+) (Ln = Ce, Pr, Nd, Yb)-doped Lu0.8Sc0.2BO3 were studied by vacuum ultraviolet spectroscopy, and the X-ray excited luminescence spectra were measured as well at room temperature. The undoped specimen presented two different emissions upon excitation at energies in the vicinity of the band gap or with X-ray. The emission at the highest energy side, located at 4.77 eV, was ascribed to self-trapped exciton, which is anchored by electron capture around theSc site. We also observed three broad emission bands at 4.43, 3.02, and 2.10 eV, which might be attributed to the trapped exciton, defect - related emissions, or both. Energy transfer processes to the doped lanthanide ions in Lu0.8Sc0.2BO3 via exciton state or sequential electron-hole capture are discussed. Finally, the energy level diagram for divalent and trivalent lanthanides in Lu0.8Sc0.2BO3 was constructed using the obtained spectroscopic parameters and the three parameters method

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/ME10084" target="_blank" >ME10084: Moderní anorganické scintilátory. Užitné charakteristiky a vliv materiálových defektů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry A

ISSN

1089-5639

e-ISSN

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Svazek periodika

115

Číslo periodika v rámci svazku

47

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

13821-13828

Kód UT WoS článku

000297195300011

EID výsledku v databázi Scopus

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