Disubstituted thiourea as a suitable sulfur source in the gram-scale synthesis of yellow- and red-emitting CdTeS/CdxZn1-xS core/shell quantum dots

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10494317" target="_blank" >RIV/00216208:11320/24:10494317 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216275:25310/24:39921779

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=jg~eDg6m07" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=jg~eDg6m07</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4na00287c" target="_blank" >10.1039/d4na00287c</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Disubstituted thiourea as a suitable sulfur source in the gram-scale synthesis of yellow- and red-emitting CdTeS/CdxZn1-xS core/shell quantum dots

Popis výsledku v původním jazyce

The key parameters of semiconductor quantum dots (QDs) that determine the suitability and efficiency for the design of most optoelectronic devices are the spectral positions of absorbance (ABS) and photoluminescence (PL) maxima, Stokes shift, photoluminescence quantum yield (PL QY) and photoluminescence lifetime (PL LT). All these parameters have been considered in the design of new ternary core CdTeS and core/shell CdTeS/CdxZn1-xS QDs. One-pot synthesis conducted in an organic medium at 160 degrees C using substituted thioureas as new, highly reactive sulfur sources allowed for the formation of a series of size- and emission-tunable CdTe0.05S0.95 QDs. Gram-scale synthesis of yellow-red emitting CdTe0.06S0.94 and CdTe0.12S0.88 cores was performed through the manipulation of their precursor ratio for the controllable formation of CdTeS/CdxZn1-xS (x = 0.1, 0.2, and 0.3) core/shell QDs. The development of the designed nanomaterials was carried out with a special emphasis on their optical properties, in particular a high PL QY up to 87% and extremely large Stokes shift, reaching approximate to 280 nm for core/shell QDs. Promisingly, for biolabeling and diagnostics, the synthesized core/shell QDs were transferred into water via surface ligand modification with the expected loss of photoluminescence efficiency. The results indicated that the availability of initial components, high yield of the desired product, stability in the organic phase, and high optical characteristics can scale up the synthesis of the developed nanomaterials from the laboratory level to industrial production.

Název v anglickém jazyce

Disubstituted thiourea as a suitable sulfur source in the gram-scale synthesis of yellow- and red-emitting CdTeS/CdxZn1-xS core/shell quantum dots

Popis výsledku anglicky

The key parameters of semiconductor quantum dots (QDs) that determine the suitability and efficiency for the design of most optoelectronic devices are the spectral positions of absorbance (ABS) and photoluminescence (PL) maxima, Stokes shift, photoluminescence quantum yield (PL QY) and photoluminescence lifetime (PL LT). All these parameters have been considered in the design of new ternary core CdTeS and core/shell CdTeS/CdxZn1-xS QDs. One-pot synthesis conducted in an organic medium at 160 degrees C using substituted thioureas as new, highly reactive sulfur sources allowed for the formation of a series of size- and emission-tunable CdTe0.05S0.95 QDs. Gram-scale synthesis of yellow-red emitting CdTe0.06S0.94 and CdTe0.12S0.88 cores was performed through the manipulation of their precursor ratio for the controllable formation of CdTeS/CdxZn1-xS (x = 0.1, 0.2, and 0.3) core/shell QDs. The development of the designed nanomaterials was carried out with a special emphasis on their optical properties, in particular a high PL QY up to 87% and extremely large Stokes shift, reaching approximate to 280 nm for core/shell QDs. Promisingly, for biolabeling and diagnostics, the synthesized core/shell QDs were transferred into water via surface ligand modification with the expected loss of photoluminescence efficiency. The results indicated that the availability of initial components, high yield of the desired product, stability in the organic phase, and high optical characteristics can scale up the synthesis of the developed nanomaterials from the laboratory level to industrial production.

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

<a href="/cs/project/EF17_048%2F0007376" target="_blank" >EF17_048/0007376: Senzory s vysokou citlivostí a materiály s nízkou hustotou na bázi polymerních nanokompozitů-NANOMAT</a><br>

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

Název periodika

Nanoscale Advances

ISSN

2516-0230

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

3377-3390

Kód UT WoS článku

001228984700001

EID výsledku v databázi Scopus

2-s2.0-85193859522