Photoluminescence quantum yield enhancement of FAPbBr3 thin films via Ce doping

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00638210" target="_blank" >RIV/68378271:_____/25:00638210 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/25:10502261

Výsledek na webu

<a href="https://hdl.handle.net/11104/0369772" target="_blank" >https://hdl.handle.net/11104/0369772</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.5c03090" target="_blank" >10.1021/acs.jpcc.5c03090</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photoluminescence quantum yield enhancement of FAPbBr3 thin films via Ce doping

Popis výsledku v původním jazyce

The photoluminescence (PL) and photoluminescence quantum yield (PLQY) of perovskite-based devices are crucial parameters that determine their photovoltaic performance. Doping, especially by ions of rare-earth metals, is an effective strategy for the enhancement of the optoelectronic properties of perovskites. Here, we explore the effect of cerium on the optical performance of CH(NH2)2PbBr3 (FAPbBr3) thin films prepared by a simple one-step spin coating. Doped films with optimal Ce concentration showed nearly 20-fold enhancement of PLQY. Absorption and emission spectroscopy revealed that such a PL increment is accompanied by just a slight blue shift, overall maintaining the emission color and its purity. Additionally, we observed that Ce doping significantly affected the perovskite crystallographic texture. We found that maintaining the initial grain orientation is crucial for achieving a high PL efficiency. By combining structural and optical characterization methods, we established the Ce concentration limits for an increased optical performance.

Název v anglickém jazyce

Photoluminescence quantum yield enhancement of FAPbBr3 thin films via Ce doping

Popis výsledku anglicky

The photoluminescence (PL) and photoluminescence quantum yield (PLQY) of perovskite-based devices are crucial parameters that determine their photovoltaic performance. Doping, especially by ions of rare-earth metals, is an effective strategy for the enhancement of the optoelectronic properties of perovskites. Here, we explore the effect of cerium on the optical performance of CH(NH2)2PbBr3 (FAPbBr3) thin films prepared by a simple one-step spin coating. Doped films with optimal Ce concentration showed nearly 20-fold enhancement of PLQY. Absorption and emission spectroscopy revealed that such a PL increment is accompanied by just a slight blue shift, overall maintaining the emission color and its purity. Additionally, we observed that Ce doping significantly affected the perovskite crystallographic texture. We found that maintaining the initial grain orientation is crucial for achieving a high PL efficiency. By combining structural and optical characterization methods, we established the Ce concentration limits for an increased optical performance.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

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

129

Číslo periodika v rámci svazku

31

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

14190-14195

Kód UT WoS článku

001537147700001

EID výsledku v databázi Scopus

2-s2.0-105013579323