Quadrature frequency resolved spectroscopy of upconversion photoluminescence in GeGaS:Er3+; II. elucidating excitation mechanisms of red emission besides green emission

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10403198" target="_blank" >RIV/00216208:11320/17:10403198 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216275:25310/17:39911176

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=kWQWThxvPK" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=kWQWThxvPK</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10854-017-6363-2" target="_blank" >10.1007/s10854-017-6363-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quadrature frequency resolved spectroscopy of upconversion photoluminescence in GeGaS:Er3+; II. elucidating excitation mechanisms of red emission besides green emission

Popis výsledku v původním jazyce

The paper addresses the quadrature frequency resolved spectroscopy (QFRS) on the red ((4) F (9/2) -&gt; (4) I (15/2)) upconverted photoluminescence (UCPL) as well as the green ((4) S (3/2) -&gt; (4) I (15/2)) UCPL of Er3+ in GeGaS chalcogenide glasses at the pump wavelength 975 nm. On the basis of the perturbed rate equations for the generally accepted 5-level model of the green and red UCPLs of Er3+, we have derived the formulas for the QFRS on the green and red UCPLs of the two differently Er-doped samples. Adopting the respective formulas as model functions for the nonlinear regressions on the QFRS data of both the UCPLs, we have determined the relevant parameters such as relaxation rates at the four excited levels, the excited absorption cross section and energy transfer parameters. Thereby the differences of UCPL dynamics between the green and red UCPLs as well as between the two differently Er-doped Ge25Ga10S65 samples are interpreted in terms of the determined parameters.

Název v anglickém jazyce

Quadrature frequency resolved spectroscopy of upconversion photoluminescence in GeGaS:Er3+; II. elucidating excitation mechanisms of red emission besides green emission

Popis výsledku anglicky

The paper addresses the quadrature frequency resolved spectroscopy (QFRS) on the red ((4) F (9/2) -&gt; (4) I (15/2)) upconverted photoluminescence (UCPL) as well as the green ((4) S (3/2) -&gt; (4) I (15/2)) UCPL of Er3+ in GeGaS chalcogenide glasses at the pump wavelength 975 nm. On the basis of the perturbed rate equations for the generally accepted 5-level model of the green and red UCPLs of Er3+, we have derived the formulas for the QFRS on the green and red UCPLs of the two differently Er-doped samples. Adopting the respective formulas as model functions for the nonlinear regressions on the QFRS data of both the UCPLs, we have determined the relevant parameters such as relaxation rates at the four excited levels, the excited absorption cross section and energy transfer parameters. Thereby the differences of UCPL dynamics between the green and red UCPLs as well as between the two differently Er-doped Ge25Ga10S65 samples are interpreted in terms of the determined parameters.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Science: Materials in Electronics

ISSN

0957-4522

e-ISSN

—

Svazek periodika

28

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

7077-7082

Kód UT WoS článku

000400394400018

EID výsledku v databázi Scopus

2-s2.0-85013829221