Acetylacetone modulated TiO2 nanoparticles for low-temperature solution processable perovskite solar cell

Seok Yeong Hong; Hyong Joon Lee; Jin Kyoung Park; Jin Hyuck Heo; Sang Hyuk Im

doi:10.1002/er.8586

Acetylacetone modulated TiO₂ nanoparticles for low-temperature solution processable perovskite solar cell

Seok Yeong Hong, Hyong Joon Lee, Jin Kyoung Park, Jin Hyuck Heo, Sang Hyuk Im

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

TiO₂ has been widely adopted as an electron transport layer during the fabrication of efficient metal halide perovskite solar cells (MHP-SCs). In this study, we prepared acetylacetone (Acac)-modulated TiO₂ nanoparticles (NPs) suitable for low-temperature solution processing via the sol-gel method. Acac coordinates with TiO₂ NPs and preferably passivates surface trap states which are detrimental to photovoltaic performance. Moreover, the Acac-TiO₂ NPs establish a favorable band alignment for charge extraction by donating the lone pair electron. As a result, Acac-TiO₂ NPs based MHP-SCs exhibit an outstanding power conversion efficiency (PCE) of 21.20% attributed to facilitated charge extraction and reduced defect density. Furthermore, by implementing low-temperature solution-processable Acac-TiO₂ NPs, we successfully demonstrated a remarkable PCE of 18.01% along with excellent mechanical stability, retaining 74.5% and 67.1% PCE after 5000 bending cycles in outward and inward directions from Acac-TiO₂ NPs based MHP-SCs on a flexible substrate.

Original language	English
Pages (from-to)	22819-22831
Number of pages	13
Journal	International Journal of Energy Research
Volume	46
Issue number	15
DOIs	https://doi.org/10.1002/er.8586
Publication status	Published - 2022 Dec

Bibliographical note

Funding Information:
This study was supported by the National Research Foundation of Korea (NRF) under the Ministry of Science, ICT & Future Planning (Basic Science Research Program [No. 2021R1A5A6002853], [No. 2022R1A2C3004964], [No. 2022R1C1C2008126]).

Publisher Copyright:
© 2022 John Wiley & Sons Ltd.

Keywords

TiO
acetylacetone
flexible
low temperature
perovskite
solar cells

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Fuel Technology
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/er.8586

Cite this

@article{42b456484ff94596b396e79e3a847a31,

title = "Acetylacetone modulated TiO2 nanoparticles for low-temperature solution processable perovskite solar cell",

abstract = "TiO2 has been widely adopted as an electron transport layer during the fabrication of efficient metal halide perovskite solar cells (MHP-SCs). In this study, we prepared acetylacetone (Acac)-modulated TiO2 nanoparticles (NPs) suitable for low-temperature solution processing via the sol-gel method. Acac coordinates with TiO2 NPs and preferably passivates surface trap states which are detrimental to photovoltaic performance. Moreover, the Acac-TiO2 NPs establish a favorable band alignment for charge extraction by donating the lone pair electron. As a result, Acac-TiO2 NPs based MHP-SCs exhibit an outstanding power conversion efficiency (PCE) of 21.20% attributed to facilitated charge extraction and reduced defect density. Furthermore, by implementing low-temperature solution-processable Acac-TiO2 NPs, we successfully demonstrated a remarkable PCE of 18.01% along with excellent mechanical stability, retaining 74.5% and 67.1% PCE after 5000 bending cycles in outward and inward directions from Acac-TiO2 NPs based MHP-SCs on a flexible substrate.",

keywords = "TiO, acetylacetone, flexible, low temperature, perovskite, solar cells",

author = "Hong, {Seok Yeong} and Lee, {Hyong Joon} and Park, {Jin Kyoung} and Heo, {Jin Hyuck} and Im, {Sang Hyuk}",

note = "Funding Information: This study was supported by the National Research Foundation of Korea (NRF) under the Ministry of Science, ICT & Future Planning (Basic Science Research Program [No. 2021R1A5A6002853], [No. 2022R1A2C3004964], [No. 2022R1C1C2008126]). Publisher Copyright: {\textcopyright} 2022 John Wiley & Sons Ltd.",

year = "2022",

month = dec,

doi = "10.1002/er.8586",

language = "English",

volume = "46",

pages = "22819--22831",

journal = "International Journal of Energy Research",

issn = "0363-907X",

publisher = "John Wiley and Sons Ltd",

number = "15",

}

TY - JOUR

T1 - Acetylacetone modulated TiO2 nanoparticles for low-temperature solution processable perovskite solar cell

AU - Hong, Seok Yeong

AU - Lee, Hyong Joon

AU - Park, Jin Kyoung

AU - Heo, Jin Hyuck

AU - Im, Sang Hyuk

N1 - Funding Information: This study was supported by the National Research Foundation of Korea (NRF) under the Ministry of Science, ICT & Future Planning (Basic Science Research Program [No. 2021R1A5A6002853], [No. 2022R1A2C3004964], [No. 2022R1C1C2008126]). Publisher Copyright: © 2022 John Wiley & Sons Ltd.

PY - 2022/12

Y1 - 2022/12

N2 - TiO2 has been widely adopted as an electron transport layer during the fabrication of efficient metal halide perovskite solar cells (MHP-SCs). In this study, we prepared acetylacetone (Acac)-modulated TiO2 nanoparticles (NPs) suitable for low-temperature solution processing via the sol-gel method. Acac coordinates with TiO2 NPs and preferably passivates surface trap states which are detrimental to photovoltaic performance. Moreover, the Acac-TiO2 NPs establish a favorable band alignment for charge extraction by donating the lone pair electron. As a result, Acac-TiO2 NPs based MHP-SCs exhibit an outstanding power conversion efficiency (PCE) of 21.20% attributed to facilitated charge extraction and reduced defect density. Furthermore, by implementing low-temperature solution-processable Acac-TiO2 NPs, we successfully demonstrated a remarkable PCE of 18.01% along with excellent mechanical stability, retaining 74.5% and 67.1% PCE after 5000 bending cycles in outward and inward directions from Acac-TiO2 NPs based MHP-SCs on a flexible substrate.

AB - TiO2 has been widely adopted as an electron transport layer during the fabrication of efficient metal halide perovskite solar cells (MHP-SCs). In this study, we prepared acetylacetone (Acac)-modulated TiO2 nanoparticles (NPs) suitable for low-temperature solution processing via the sol-gel method. Acac coordinates with TiO2 NPs and preferably passivates surface trap states which are detrimental to photovoltaic performance. Moreover, the Acac-TiO2 NPs establish a favorable band alignment for charge extraction by donating the lone pair electron. As a result, Acac-TiO2 NPs based MHP-SCs exhibit an outstanding power conversion efficiency (PCE) of 21.20% attributed to facilitated charge extraction and reduced defect density. Furthermore, by implementing low-temperature solution-processable Acac-TiO2 NPs, we successfully demonstrated a remarkable PCE of 18.01% along with excellent mechanical stability, retaining 74.5% and 67.1% PCE after 5000 bending cycles in outward and inward directions from Acac-TiO2 NPs based MHP-SCs on a flexible substrate.

KW - TiO

KW - acetylacetone

KW - flexible

KW - low temperature

KW - perovskite

KW - solar cells

UR - http://www.scopus.com/inward/record.url?scp=85137575281&partnerID=8YFLogxK

U2 - 10.1002/er.8586

DO - 10.1002/er.8586

M3 - Article

AN - SCOPUS:85137575281

SN - 0363-907X

VL - 46

SP - 22819

EP - 22831

JO - International Journal of Energy Research

JF - International Journal of Energy Research

IS - 15

ER -