How humidity and light exposure change the photophysics of metal halide perovskite solar cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00537871" target="_blank" >RIV/68378271:_____/20:00537871 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/20:00345157

Výsledek na webu

<a href="https://doi.org/10.1002/solr.202000382" target="_blank" >https://doi.org/10.1002/solr.202000382</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/solr.202000382" target="_blank" >10.1002/solr.202000382</a>

Jazyk výsledku

angličtina

Název v původním jazyce

How humidity and light exposure change the photophysics of metal halide perovskite solar cells

Popis výsledku v původním jazyce

Metal halide perovskites exhibit outstanding optical and electronic properties but are very sensitive to humidity and light-soaking. In this work, the photophysics of perovskites that have been exposed to such conditions are studied and the impact of excess lead iodide is revealed. For exposed samples, the formation of sub-bandgap states and increased trap assisted recombination is observed, using highly sensitive absorption and time-resolved photoluminescence measurements, respectively. It appears that such exposure primarily affects the perovskite surface. Consequently, on n–i–p device level, the spiro-OMeTAD/perovskite interface is more rapidly affected than its buried electron-collecting interface. Moreover, both stoichiometric and nonstoichiometric MAPbI3-based solar cells show reduced device performance mainly due to voltage losses. Overall, this study brings forward key points to consider in engineering perovskite solar cells with improved performance and material stability.n

Název v anglickém jazyce

How humidity and light exposure change the photophysics of metal halide perovskite solar cells

Popis výsledku anglicky

Metal halide perovskites exhibit outstanding optical and electronic properties but are very sensitive to humidity and light-soaking. In this work, the photophysics of perovskites that have been exposed to such conditions are studied and the impact of excess lead iodide is revealed. For exposed samples, the formation of sub-bandgap states and increased trap assisted recombination is observed, using highly sensitive absorption and time-resolved photoluminescence measurements, respectively. It appears that such exposure primarily affects the perovskite surface. Consequently, on n–i–p device level, the spiro-OMeTAD/perovskite interface is more rapidly affected than its buried electron-collecting interface. Moreover, both stoichiometric and nonstoichiometric MAPbI3-based solar cells show reduced device performance mainly due to voltage losses. Overall, this study brings forward key points to consider in engineering perovskite solar cells with improved performance and material stability.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

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

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

SOL RRL

ISSN

2367-198X

e-ISSN

—

Svazek periodika

4

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

1-10

Kód UT WoS článku

000572068000001

EID výsledku v databázi Scopus

2-s2.0-85091381917