Anti-Stokes photoluminescence study on a methylammonium lead bromide nanoparticle film

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F20%3APU137542" target="_blank" >RIV/00216305:26310/20:PU137542 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlepdf/2020/nr/d0nr04545d?page=search" target="_blank" >https://pubs.rsc.org/en/content/articlepdf/2020/nr/d0nr04545d?page=search</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0nr04545d" target="_blank" >10.1039/d0nr04545d</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Anti-Stokes photoluminescence study on a methylammonium lead bromide nanoparticle film

Popis výsledku v původním jazyce

Photon coolingviaanti-Stokes photoluminescence (ASPL) is a promising approach to realize all-solid-state cryo-refrigeration by photoexcitation. Photoluminescence quantum yields close to 100% and a strong coupling between phonons and excited states are required to achieve net cooling. We have studied the anti-Stokes photoluminescence of thin films of methylammonium lead bromide nanoparticles. We found that the anti-Stokes photoluminescence is thermally activated with an activation energy of similar to 80 meV. At room temperature the ASPL up-conversion efficiency is similar to 60% and it depends linearly on the excitation intensity. Our results suggest that upon further optimization of their optical properties, the investigated particles could be promising candidates for the demonstration of photon cooling in thin solid films.

Název v anglickém jazyce

Anti-Stokes photoluminescence study on a methylammonium lead bromide nanoparticle film

Popis výsledku anglicky

Photon coolingviaanti-Stokes photoluminescence (ASPL) is a promising approach to realize all-solid-state cryo-refrigeration by photoexcitation. Photoluminescence quantum yields close to 100% and a strong coupling between phonons and excited states are required to achieve net cooling. We have studied the anti-Stokes photoluminescence of thin films of methylammonium lead bromide nanoparticles. We found that the anti-Stokes photoluminescence is thermally activated with an activation energy of similar to 80 meV. At room temperature the ASPL up-conversion efficiency is similar to 60% and it depends linearly on the excitation intensity. Our results suggest that upon further optimization of their optical properties, the investigated particles could be promising candidates for the demonstration of photon cooling in thin solid films.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Nanoscale

ISSN

2040-3364

e-ISSN

2040-3372

Svazek periodika

12

Číslo periodika v rámci svazku

31

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

16556-16561

Kód UT WoS článku

000560178300014

EID výsledku v databázi Scopus

2-s2.0-85089616517