Deciphering the role of quantum dot size in the ultrafast charge carrier dynamics at the perovskite-quantum dot interface

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00539182" target="_blank" >RIV/68378271:_____/20:00539182 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1039/d0tc03835k" target="_blank" >https://doi.org/10.1039/d0tc03835k</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0tc03835k" target="_blank" >10.1039/d0tc03835k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Deciphering the role of quantum dot size in the ultrafast charge carrier dynamics at the perovskite-quantum dot interface

Popis výsledku v původním jazyce

Deciphering the electron and hole (e, h) dynamics at the interfaces of photoexcited hybrid materials at different densities of photoexcited charge carriers is paramount to the development of efficient optoelectronic devices. Nanocomposites formed by methylammonium lead iodide perovskite (PS) and semiconductor colloidal quantum dots (QDs) are among these hybrid materials under intensive studies. However, the reciprocal influence of the components in the composite on the charge carriers’ dynamics is still poorly explored. We unraveled the effect of PbS QD size, embedded in the PS matrix, on the e and h diffusion, transfer to the QD phase and recombination. While the decays are dominated by e and h transition from PS to QDs, the increase in the QD size results in an acceleration of the charge carriers’ transitions represented by the total transfer rate constants of electrons and holes. We extract the diffusion times and transfer rate constants to the interfaces.n

Název v anglickém jazyce

Deciphering the role of quantum dot size in the ultrafast charge carrier dynamics at the perovskite-quantum dot interface

Popis výsledku anglicky

Deciphering the electron and hole (e, h) dynamics at the interfaces of photoexcited hybrid materials at different densities of photoexcited charge carriers is paramount to the development of efficient optoelectronic devices. Nanocomposites formed by methylammonium lead iodide perovskite (PS) and semiconductor colloidal quantum dots (QDs) are among these hybrid materials under intensive studies. However, the reciprocal influence of the components in the composite on the charge carriers’ dynamics is still poorly explored. We unraveled the effect of PbS QD size, embedded in the PS matrix, on the e and h diffusion, transfer to the QD phase and recombination. While the decays are dominated by e and h transition from PS to QDs, the increase in the QD size results in an acceleration of the charge carriers’ transitions represented by the total transfer rate constants of electrons and holes. We extract the diffusion times and transfer rate constants to the interfaces.n

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Chemistry C

ISSN

2050-7526

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

42

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

14834-14844

Kód UT WoS článku

000586316600017

EID výsledku v databázi Scopus

2-s2.0-85095971637