Blue Circularly Polarized Luminescence from Quantum-Confined CsPbBr3 Nanocrystals with a Different Degree of Shape Anisotropy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F24%3A10255175" target="_blank" >RIV/61989100:27740/24:10255175 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/10.1021/acs.jpcc.4c01511" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.jpcc.4c01511</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.4c01511" target="_blank" >10.1021/acs.jpcc.4c01511</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Blue Circularly Polarized Luminescence from Quantum-Confined CsPbBr3 Nanocrystals with a Different Degree of Shape Anisotropy

Popis výsledku v původním jazyce

Circularly polarized luminescence is an attractive characteristic of chiral perovskite nanocrystals, as it opens possibilities for applications such as spin-polarized light-emitting diodes and chiral light-selective photodetectors. While previous research has mainly focused on green- and red-emitting chiral perovskite nanocrystals, the exploration of blue-emitting counterparts with efficient circularly polarized luminescence activity is still in its early stages. Here, we synthesize nanocubes, nanoribbons, and nanowires of CsPbBr3 perovskites, which exhibited strong blue emission thanks to quantum confinement in at least two dimensions. Their chiral induction is achieved by attaching chiral molecules (R/S-methylbenzylammonium bromide) to the surface of nanocrystals, resulting in circular dichroism and circularly polarized luminescence. Upon attachment of chiral ligands, the average absorption dissymmetry factor, |gabs|, reached 9 x 10(-5) for nanocubes, 1.5 x 10(-4) for nanoribbons, and 2.9 x 10(-4) for nanowires, thus clearly revealing shape-dependence. Moreover, we achieved blue circular polarized luminescence for all three kinds of samples, with the average luminescence dissymmetry factor, |glum|, of 1.4 x 10(-4), 4 x 10(-4), and 5.2 x 10(-4) for nanocubes, nanoribbons, and nanowires, respectively.

Název v anglickém jazyce

Blue Circularly Polarized Luminescence from Quantum-Confined CsPbBr3 Nanocrystals with a Different Degree of Shape Anisotropy

Popis výsledku anglicky

Circularly polarized luminescence is an attractive characteristic of chiral perovskite nanocrystals, as it opens possibilities for applications such as spin-polarized light-emitting diodes and chiral light-selective photodetectors. While previous research has mainly focused on green- and red-emitting chiral perovskite nanocrystals, the exploration of blue-emitting counterparts with efficient circularly polarized luminescence activity is still in its early stages. Here, we synthesize nanocubes, nanoribbons, and nanowires of CsPbBr3 perovskites, which exhibited strong blue emission thanks to quantum confinement in at least two dimensions. Their chiral induction is achieved by attaching chiral molecules (R/S-methylbenzylammonium bromide) to the surface of nanocrystals, resulting in circular dichroism and circularly polarized luminescence. Upon attachment of chiral ligands, the average absorption dissymmetry factor, |gabs|, reached 9 x 10(-5) for nanocubes, 1.5 x 10(-4) for nanoribbons, and 2.9 x 10(-4) for nanowires, thus clearly revealing shape-dependence. Moreover, we achieved blue circular polarized luminescence for all three kinds of samples, with the average luminescence dissymmetry factor, |glum|, of 1.4 x 10(-4), 4 x 10(-4), and 5.2 x 10(-4) for nanocubes, nanoribbons, and nanowires, respectively.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

1932-7455

Svazek periodika

128

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

8689-8697

Kód UT WoS článku

001226074500001

EID výsledku v databázi Scopus

2-s2.0-85193535098