Improvement of the interfacial contact between zinc oxide and a mixed cation perovskite using carbon nanotubes for ambient-air-processed perovskite solar cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F20%3APU138269" target="_blank" >RIV/00216305:26310/20:PU138269 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1039/D0NJ04656F" target="_blank" >https://doi.org/10.1039/D0NJ04656F</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0nj04656f" target="_blank" >10.1039/d0nj04656f</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Improvement of the interfacial contact between zinc oxide and a mixed cation perovskite using carbon nanotubes for ambient-air-processed perovskite solar cells

Popis výsledku v původním jazyce

The increasing consideration toward thin-film organic-inorganic halide perovskite solar cells (PSCs) is because of their high-power conversion efficiency that arises from several advantages of perovskite materials, including solution processability and low fabrication cost. However, we have not been able to maximize these advantages in the existing halide perovskite (PVK) solar cell technology as a consequence of structural and material limitations. Herein, we have developed a solution to these drawbacks by substituting the conventional metal-oxide photoelectrodes with materials doped with carbon nanotubes (CNTs). The mixed cation PSCs fabricated in ambient air were unstable with the PVK on top of zinc oxide (ZnO) due to the presence of hydroxyl groups on the ZnO surface. To suppress the hydroxyl groups, we incorporated CNTs in the ZnO film. On adding CNTs, the ZnO film showed more significant charge extraction, with the recombination rate in the PSC reducing due to higher conductivity and lower trap states in CNT-doped ZnO. Our results demonstrate that the optimized PSC based on the CNT additive showed PCE up to 15%. With this surface modification approach, we could show hysteresis-free and stable PSCs, with lesser decomposition after similar to 2000 h of storage in a moist ambience. This work presents novelty in the material, cost, and assembly of stable and effective perovskite solar cells.

Název v anglickém jazyce

Improvement of the interfacial contact between zinc oxide and a mixed cation perovskite using carbon nanotubes for ambient-air-processed perovskite solar cells

Popis výsledku anglicky

The increasing consideration toward thin-film organic-inorganic halide perovskite solar cells (PSCs) is because of their high-power conversion efficiency that arises from several advantages of perovskite materials, including solution processability and low fabrication cost. However, we have not been able to maximize these advantages in the existing halide perovskite (PVK) solar cell technology as a consequence of structural and material limitations. Herein, we have developed a solution to these drawbacks by substituting the conventional metal-oxide photoelectrodes with materials doped with carbon nanotubes (CNTs). The mixed cation PSCs fabricated in ambient air were unstable with the PVK on top of zinc oxide (ZnO) due to the presence of hydroxyl groups on the ZnO surface. To suppress the hydroxyl groups, we incorporated CNTs in the ZnO film. On adding CNTs, the ZnO film showed more significant charge extraction, with the recombination rate in the PSC reducing due to higher conductivity and lower trap states in CNT-doped ZnO. Our results demonstrate that the optimized PSC based on the CNT additive showed PCE up to 15%. With this surface modification approach, we could show hysteresis-free and stable PSCs, with lesser decomposition after similar to 2000 h of storage in a moist ambience. This work presents novelty in the material, cost, and assembly of stable and effective perovskite solar cells.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

NEW JOURNAL OF CHEMISTRY

ISSN

1144-0546

e-ISSN

1369-9261

Svazek periodika

44

Číslo periodika v rámci svazku

45

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

19802-19811

Kód UT WoS článku

000594503300036

EID výsledku v databázi Scopus

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