Photoluminescence in pulsed-laser deposited GeGaSbS:Er films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39912634" target="_blank" >RIV/00216275:25310/18:39912634 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/18:00501553

Výsledek na webu

<a href="https://doi.org/10.1016/j.optmat.2018.08.055" target="_blank" >https://doi.org/10.1016/j.optmat.2018.08.055</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.optmat.2018.08.055" target="_blank" >10.1016/j.optmat.2018.08.055</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photoluminescence in pulsed-laser deposited GeGaSbS:Er films

Popis výsledku v původním jazyce

The complex dielectric function, the Er3+ Stokes emission at approximate to 1540 nm and the upconversion photoluminescence at approximate to 990 nm of pulsed-laser deposited thin-film GeGaSbS:Er3+ are studied. The linear-refractive index dispersion is obtained by fitting spectroscopic ellipsometry data to the Sellmeier and the Cody-Lorentz parametrizations. The former model is used to calculate nonlinear refractive index. The Stokes emission intensity at approximate to 1540 nm, originating from the Er3+:4I13/2→4I15/2 transition under a 980 nm pumping, diminishes with increasing refractive index and decreasing optical-bandgap energy of the films. An attempt to relate differences in the optical and photoluminescence properties to the atomic structure elucidated from Raman spectra analysis is presented. The emission probability is highest for the structure with the lowest fraction of (semi)metallic bonds, the highest content of homonuclear S-S bonds and the lowest Ge/S ratio. In such a film, the clustering of Er3+ ions, which is responsible for the intensity weakening, is suppressed. The film shows approximate to 990nm upconversion photoluminescence originating from the Er3+:4I11/2→4I15/2 transition under a 1550 nm excitation. The upconversion peak shape resembles that of the compositionally and structurally similar bulk glass.

Název v anglickém jazyce

Photoluminescence in pulsed-laser deposited GeGaSbS:Er films

Popis výsledku anglicky

The complex dielectric function, the Er3+ Stokes emission at approximate to 1540 nm and the upconversion photoluminescence at approximate to 990 nm of pulsed-laser deposited thin-film GeGaSbS:Er3+ are studied. The linear-refractive index dispersion is obtained by fitting spectroscopic ellipsometry data to the Sellmeier and the Cody-Lorentz parametrizations. The former model is used to calculate nonlinear refractive index. The Stokes emission intensity at approximate to 1540 nm, originating from the Er3+:4I13/2→4I15/2 transition under a 980 nm pumping, diminishes with increasing refractive index and decreasing optical-bandgap energy of the films. An attempt to relate differences in the optical and photoluminescence properties to the atomic structure elucidated from Raman spectra analysis is presented. The emission probability is highest for the structure with the lowest fraction of (semi)metallic bonds, the highest content of homonuclear S-S bonds and the lowest Ge/S ratio. In such a film, the clustering of Er3+ ions, which is responsible for the intensity weakening, is suppressed. The film shows approximate to 990nm upconversion photoluminescence originating from the Er3+:4I11/2→4I15/2 transition under a 1550 nm excitation. The upconversion peak shape resembles that of the compositionally and structurally similar bulk glass.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

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

2018

Kód důvěrnosti údajů

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

Název periodika

Optical Materials

ISSN

0925-3467

e-ISSN

—

Svazek periodika

85

Číslo periodika v rámci svazku

November

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

246-253

Kód UT WoS článku

000447575500037

EID výsledku v databázi Scopus

2-s2.0-85052487273