Study of time-resolved photoluminescence decay curves in Al-doped ZnO and Eu-doped Cd1-xZn xS nanophosphors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10470730" target="_blank" >RIV/00216208:11320/23:10470730 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=3_BkbS6V_e" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=3_BkbS6V_e</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00339-023-07055-5" target="_blank" >10.1007/s00339-023-07055-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study of time-resolved photoluminescence decay curves in Al-doped ZnO and Eu-doped Cd1-xZn xS nanophosphors

Popis výsledku v původním jazyce

Even though the excited state lifetimes can be found out experimentally using well-known time-resolved spectroscopy but low signal to noise ratio leading to lack of data points on the hyperbolic curves makes it difficult to clearly reproduce the individual exponentials simply by fitting to further analyse the decay curves. Keeping these things in mind, in this work, time-resolved photoluminescent emission decay curves were simulated for aluminium doped zinc oxide [ZnO:Al (0.1-3.0%)] nanophosphors and europium doped cadmium-zinc sulphide [Cd1-xZn xS:Eu (0.01-10.00%, x = 0-0.5)] nanocomposite phosphor using FORTRAN-77 subroutines for three different lifetimes. Excited state lifetime is the most important parameter of nanophosphors to investigate for the purpose of opto-electronic applications, among emission intensity and wavelength. Experimentally obtained excited state lifetimes were used as the primary input to study the effect of various parameters like cut-off intensity, dopant concentration and nanocomposite composition on the decay nature of emission intensities from individual excited states, and the decay nature of total emission intensity. Decay curves generated for the ZnO:Al (0.1-3.0%) nanophosphors displayed the lifetime shortening and enhanced emission due to increasing Al-doping at all simulated arbitrary intensities for all excited state lifetimes. Decay curves generated for the Cd1-xZn xS:Eu (0.01-10.00%, x = 0-0.5) nanocomposite phosphors similarly displayed the trend of lifetime shortening with increasing Zn-concentration and Eu-doping for every individually simulated exponential.

Název v anglickém jazyce

Study of time-resolved photoluminescence decay curves in Al-doped ZnO and Eu-doped Cd1-xZn xS nanophosphors

Popis výsledku anglicky

Even though the excited state lifetimes can be found out experimentally using well-known time-resolved spectroscopy but low signal to noise ratio leading to lack of data points on the hyperbolic curves makes it difficult to clearly reproduce the individual exponentials simply by fitting to further analyse the decay curves. Keeping these things in mind, in this work, time-resolved photoluminescent emission decay curves were simulated for aluminium doped zinc oxide [ZnO:Al (0.1-3.0%)] nanophosphors and europium doped cadmium-zinc sulphide [Cd1-xZn xS:Eu (0.01-10.00%, x = 0-0.5)] nanocomposite phosphor using FORTRAN-77 subroutines for three different lifetimes. Excited state lifetime is the most important parameter of nanophosphors to investigate for the purpose of opto-electronic applications, among emission intensity and wavelength. Experimentally obtained excited state lifetimes were used as the primary input to study the effect of various parameters like cut-off intensity, dopant concentration and nanocomposite composition on the decay nature of emission intensities from individual excited states, and the decay nature of total emission intensity. Decay curves generated for the ZnO:Al (0.1-3.0%) nanophosphors displayed the lifetime shortening and enhanced emission due to increasing Al-doping at all simulated arbitrary intensities for all excited state lifetimes. Decay curves generated for the Cd1-xZn xS:Eu (0.01-10.00%, x = 0-0.5) nanocomposite phosphors similarly displayed the trend of lifetime shortening with increasing Zn-concentration and Eu-doping for every individually simulated exponential.

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

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Applied Physics A: Materials Science and Processing

ISSN

0947-8396

e-ISSN

1432-0630

Svazek periodika

129

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

795

Kód UT WoS článku

001093934600002

EID výsledku v databázi Scopus

2-s2.0-85174723845