KCl-mediated defect passivation in vapor-deposited perovskites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00638046" target="_blank" >RIV/68378271:_____/25:00638046 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1021/acsami.5c09426" target="_blank" >https://doi.org/10.1021/acsami.5c09426</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsami.5c09426" target="_blank" >10.1021/acsami.5c09426</a>

Jazyk výsledku

angličtina

Název v původním jazyce

KCl-mediated defect passivation in vapor-deposited perovskites

Popis výsledku v původním jazyce

Perovskite-based solar cells (PSCs) have reached efficiencies comparable to those of commonly used silicon solar panels. Despite the promise of PSCs, their efficiency and commercial viability are currently restricted by three main factors: nonradiative charge recombinations on defects occurring within the light-absorbing layer and at its boundaries, limited reproducibility, and upscaling due to widely employed wet deposition methods. To address these issues, we investigated the defect passivation strategy by introducing potassium salt (KCl) during perovskite vapor deposition. We observed effective passivation of the defects upon KCl addition, manifested as an immediate and significant enhancement of the real-time photoluminescence (PL) intensity. The efficiency of passivation is related to the ionic nature of the potassium salt and its flux density. On the other hand, the perovskite’s crystallographic structure and texture, as observed from the grazing-incidence wide/small-angle X-ray scattering measurements, showed no significant changes due to KCl doping. Our work provides valuable insight into the possible passivation routes for the vapor-deposited perovskite layers, with implications for various chemical compositions or architectures.

Název v anglickém jazyce

KCl-mediated defect passivation in vapor-deposited perovskites

Popis výsledku anglicky

Perovskite-based solar cells (PSCs) have reached efficiencies comparable to those of commonly used silicon solar panels. Despite the promise of PSCs, their efficiency and commercial viability are currently restricted by three main factors: nonradiative charge recombinations on defects occurring within the light-absorbing layer and at its boundaries, limited reproducibility, and upscaling due to widely employed wet deposition methods. To address these issues, we investigated the defect passivation strategy by introducing potassium salt (KCl) during perovskite vapor deposition. We observed effective passivation of the defects upon KCl addition, manifested as an immediate and significant enhancement of the real-time photoluminescence (PL) intensity. The efficiency of passivation is related to the ionic nature of the potassium salt and its flux density. On the other hand, the perovskite’s crystallographic structure and texture, as observed from the grazing-incidence wide/small-angle X-ray scattering measurements, showed no significant changes due to KCl doping. Our work provides valuable insight into the possible passivation routes for the vapor-deposited perovskite layers, with implications for various chemical compositions or architectures.

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

ACS Applied Materials and Interfaces

ISSN

1944-8244

e-ISSN

1944-8252

Svazek periodika

17

Číslo periodika v rámci svazku

30

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

43877-43884

Kód UT WoS článku

001532244000001

EID výsledku v databázi Scopus

2-s2.0-105012780755