Fully Scalable and Stable CsPbI2Br Solar Cells Realized by an All-Spray-Coating Process

David Sunghwan Lee; Min Jeong Ki; Hyong Joon Lee; Jin Kyoung Park; Seok Yeong Hong; Bong Woo Kim; Jin Hyuck Heo; Sang Hyuk Im

doi:10.1021/acsami.1c21644

Fully Scalable and Stable CsPbI₂Br Solar Cells Realized by an All-Spray-Coating Process

David Sunghwan Lee
, Min Jeong Ki
, Hyong Joon Lee
, Jin Kyoung Park
, Seok Yeong Hong
, Bong Woo Kim
, Jin Hyuck Heo^*
, Sang Hyuk Im

^*Corresponding author for this work

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

37 Citations (Scopus)

Abstract

Spray-coating is a scalable and time-efficient technique for the development of large-area metal halide perovskite (MHP) solar cells. However, a bottleneck still exists toward the development of fully scalable n-i-p-type MHP solar cells particularly on spray-coating the hole transporting layer (HTL). Here, we present a reliable strategy of spray-coating the HTL by using MoO2 nanoparticles with small amounts of poly(triarylamine) (PTAA) binders to ensure uniform coverage and efficient charge extraction. By spray-coating all layers except the Au electrode, we achieve high and scalable efficiencies of 14.26 and 13.88% for CsPbI2Br unit cells (0.12 cm2) and submodules (25 cm2), respectively. We then extend toward an all-spray-coating process by spray-coating carbon black as the top counter electrode, resulting in a submodule efficiency of 10.08%. Finally, we also demonstrate good long-term stability of the submodules under damp heat conditions (85 °C/85% relative humidity) over 1000 h.

Original language	English
Pages (from-to)	7926-7935
Number of pages	10
Journal	ACS Applied Materials and Interfaces
Volume	14
Issue number	6
DOIs	https://doi.org/10.1021/acsami.1c21644
Publication status	Published - 2022 Feb 16

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) and Nano-Material Technology Development Program (no. 2017M3A7B4041696)), the Ministry of Trade, Industry and Energy, Republic of Korea (New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) (no.20183010013820)), and the Technology Innovation Program (20012770, High Permeability Thermoplastic Elastomer for Solar Module) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).

Publisher Copyright:
©

Keywords

MoOhole transport layer
all-inorganic CsPbIBr
all-spray-coating process
carbon black electrode
fully scalable

ASJC Scopus subject areas

General Materials Science

Access to Document

10.1021/acsami.1c21644

Cite this

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title = "Fully Scalable and Stable CsPbI2Br Solar Cells Realized by an All-Spray-Coating Process",

abstract = "Spray-coating is a scalable and time-efficient technique for the development of large-area metal halide perovskite (MHP) solar cells. However, a bottleneck still exists toward the development of fully scalable n-i-p-type MHP solar cells particularly on spray-coating the hole transporting layer (HTL). Here, we present a reliable strategy of spray-coating the HTL by using MoO2 nanoparticles with small amounts of poly(triarylamine) (PTAA) binders to ensure uniform coverage and efficient charge extraction. By spray-coating all layers except the Au electrode, we achieve high and scalable efficiencies of 14.26 and 13.88\% for CsPbI2Br unit cells (0.12 cm2) and submodules (25 cm2), respectively. We then extend toward an all-spray-coating process by spray-coating carbon black as the top counter electrode, resulting in a submodule efficiency of 10.08\%. Finally, we also demonstrate good long-term stability of the submodules under damp heat conditions (85 °C/85\% relative humidity) over 1000 h. ",

keywords = "MoOhole transport layer, all-inorganic CsPbIBr, all-spray-coating process, carbon black electrode, fully scalable",

author = "Lee, \{David Sunghwan\} and Ki, \{Min Jeong\} and Lee, \{Hyong Joon\} and Park, \{Jin Kyoung\} and Hong, \{Seok Yeong\} and Kim, \{Bong Woo\} 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) and Nano-Material Technology Development Program (no. 2017M3A7B4041696)), the Ministry of Trade, Industry and Energy, Republic of Korea (New \& Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) (no.20183010013820)), and the Technology Innovation Program (20012770, High Permeability Thermoplastic Elastomer for Solar Module) funded by the Ministry of Trade, Industry \& Energy (MOTIE, Korea). Publisher Copyright: {\textcopyright} ",

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T1 - Fully Scalable and Stable CsPbI2Br Solar Cells Realized by an All-Spray-Coating Process

AU - Lee, David Sunghwan

AU - Ki, Min Jeong

AU - Lee, Hyong Joon

AU - Park, Jin Kyoung

AU - Hong, Seok Yeong

AU - Kim, Bong Woo

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) and Nano-Material Technology Development Program (no. 2017M3A7B4041696)), the Ministry of Trade, Industry and Energy, Republic of Korea (New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) (no.20183010013820)), and the Technology Innovation Program (20012770, High Permeability Thermoplastic Elastomer for Solar Module) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea). Publisher Copyright: ©

PY - 2022/2/16

Y1 - 2022/2/16

N2 - Spray-coating is a scalable and time-efficient technique for the development of large-area metal halide perovskite (MHP) solar cells. However, a bottleneck still exists toward the development of fully scalable n-i-p-type MHP solar cells particularly on spray-coating the hole transporting layer (HTL). Here, we present a reliable strategy of spray-coating the HTL by using MoO2 nanoparticles with small amounts of poly(triarylamine) (PTAA) binders to ensure uniform coverage and efficient charge extraction. By spray-coating all layers except the Au electrode, we achieve high and scalable efficiencies of 14.26 and 13.88% for CsPbI2Br unit cells (0.12 cm2) and submodules (25 cm2), respectively. We then extend toward an all-spray-coating process by spray-coating carbon black as the top counter electrode, resulting in a submodule efficiency of 10.08%. Finally, we also demonstrate good long-term stability of the submodules under damp heat conditions (85 °C/85% relative humidity) over 1000 h.

AB - Spray-coating is a scalable and time-efficient technique for the development of large-area metal halide perovskite (MHP) solar cells. However, a bottleneck still exists toward the development of fully scalable n-i-p-type MHP solar cells particularly on spray-coating the hole transporting layer (HTL). Here, we present a reliable strategy of spray-coating the HTL by using MoO2 nanoparticles with small amounts of poly(triarylamine) (PTAA) binders to ensure uniform coverage and efficient charge extraction. By spray-coating all layers except the Au electrode, we achieve high and scalable efficiencies of 14.26 and 13.88% for CsPbI2Br unit cells (0.12 cm2) and submodules (25 cm2), respectively. We then extend toward an all-spray-coating process by spray-coating carbon black as the top counter electrode, resulting in a submodule efficiency of 10.08%. Finally, we also demonstrate good long-term stability of the submodules under damp heat conditions (85 °C/85% relative humidity) over 1000 h.

KW - MoOhole transport layer

KW - all-inorganic CsPbIBr

KW - all-spray-coating process

KW - carbon black electrode

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