Unveiling the effect of potassium treatment on the mesoporous TiO2/ perovskite interface in perovskite solar cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00549982" target="_blank" >RIV/68378271:_____/21:00549982 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/21:10436370 RIV/68407700:21230/21:00353215 RIV/68407700:21720/21:00353215

Výsledek na webu

<a href="https://doi.org/10.1021/acsaem.1c02229" target="_blank" >https://doi.org/10.1021/acsaem.1c02229</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsaem.1c02229" target="_blank" >10.1021/acsaem.1c02229</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unveiling the effect of potassium treatment on the mesoporous TiO2/ perovskite interface in perovskite solar cells

Popis výsledku v původním jazyce

A method for improving mesoporous TiO2/perovskite interfacial characteristics in perovskite solar cells (PSCs) is demonstrated by modifying mesoporous TiO2 with potassium (K) treatment. It is found that the modification of mesoporous TiO2 with K treatment enhances the perovskite crystallization process, producing a perovskite film with higher crystallinity and larger grains. K treatment passivates trap sites in mesoporous TiO2 and reduces sub-band-gap deep defect states at the interface of the perovskite, thereby suppressing the nonradiative recombination and improving Voc of PSCs. Stronger photoluminescence quenching and shorter carrier lifetime are also observed for the perovskite on K-treated mesoporous TiO2, indicating more efficient charge collection across the interface. As a result of these advancements, PSC based on K-treated mesoporous TiO2 shows a high power conversion efficiency of 20.60% compared to PSC without K treatment and improves the environmental stability in air.

Název v anglickém jazyce

Unveiling the effect of potassium treatment on the mesoporous TiO2/ perovskite interface in perovskite solar cells

Popis výsledku anglicky

A method for improving mesoporous TiO2/perovskite interfacial characteristics in perovskite solar cells (PSCs) is demonstrated by modifying mesoporous TiO2 with potassium (K) treatment. It is found that the modification of mesoporous TiO2 with K treatment enhances the perovskite crystallization process, producing a perovskite film with higher crystallinity and larger grains. K treatment passivates trap sites in mesoporous TiO2 and reduces sub-band-gap deep defect states at the interface of the perovskite, thereby suppressing the nonradiative recombination and improving Voc of PSCs. Stronger photoluminescence quenching and shorter carrier lifetime are also observed for the perovskite on K-treated mesoporous TiO2, indicating more efficient charge collection across the interface. As a result of these advancements, PSC based on K-treated mesoporous TiO2 shows a high power conversion efficiency of 20.60% compared to PSC without K treatment and improves the environmental stability in air.

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

<a href="/cs/project/EF15_003%2F0000464" target="_blank" >EF15_003/0000464: Centrum pokročilé fotovoltaiky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

ACS Applied Energy Materials

ISSN

2574-0962

e-ISSN

—

Svazek periodika

4

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

11488-11495

Kód UT WoS článku

000711236300108

EID výsledku v databázi Scopus

2-s2.0-85118175023