Room-Temperature Atomic-Layer-Deposited Al2O3 Improves the Efficiency of Perovskite Solar Cells over Time

Kód výsledku v IS VaVaI

RIV/00216208:11320/18:10389467 - isvavai.cz

Výsledek na webu

https://doi.org/10.1002/cssc.201801434

DOI - Digital Object Identifier

10.1002/cssc.201801434

Jazyk výsledku

angličtina

Název v původním jazyce

Room-Temperature Atomic-Layer-Deposited Al2O3 Improves the Efficiency of Perovskite Solar Cells over Time

Popis výsledku v původním jazyce

Electrical characterisation of perovskite solar cells consisting of room-temperature atomic-layer-deposited aluminium oxide (RT-ALD-Al2O3) film on top of a methyl ammonium lead triiodide (CH3NH3PbI3) absorber showed excellent stability of the power conversion efficiency (PCE) over a long time. Under the same environmental conditions (for 355d), the average PCE of solar cells without the ALD layer decreased from 13.6 to 9.6%, whereas that of solar cells containing 9 ALD cycles of depositing RT-ALD-Al2O3 on top of CH3NH3PbI3 increased from 9.4 to 10.8%. Spectromicroscopic investigations of the ALD/perovskite interface revealed that the maximum PCE with the ALD layer is obtained when the so-called perovskite cleaning process induced by ALD precursors is complete. The PCE enhancement over time is probably related to a self-healing process induced by the RT-ALD-Al2O3 film. This work may provide a new direction for further improving the long-term stability and performance of perovskite solar cells.

Název v anglickém jazyce

Room-Temperature Atomic-Layer-Deposited Al2O3 Improves the Efficiency of Perovskite Solar Cells over Time

Popis výsledku anglicky

Electrical characterisation of perovskite solar cells consisting of room-temperature atomic-layer-deposited aluminium oxide (RT-ALD-Al2O3) film on top of a methyl ammonium lead triiodide (CH3NH3PbI3) absorber showed excellent stability of the power conversion efficiency (PCE) over a long time. Under the same environmental conditions (for 355d), the average PCE of solar cells without the ALD layer decreased from 13.6 to 9.6%, whereas that of solar cells containing 9 ALD cycles of depositing RT-ALD-Al2O3 on top of CH3NH3PbI3 increased from 9.4 to 10.8%. Spectromicroscopic investigations of the ALD/perovskite interface revealed that the maximum PCE with the ALD layer is obtained when the so-called perovskite cleaning process induced by ALD precursors is complete. The PCE enhancement over time is probably related to a self-healing process induced by the RT-ALD-Al2O3 film. This work may provide a new direction for further improving the long-term stability and performance of perovskite solar cells.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

LM2015057: Laboratoř fyziky povrchů – Optická dráha pro výzkum materiálů

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
S - Specificky vyzkum na vysokych skolach
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

ChemSusChem

ISSN

1864-5631

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

3640-3648

Kód UT WoS článku

000448064300012

EID výsledku v databázi Scopus

2-s2.0-85053896746