Improved performance and thermal stability of perovskite solar cells prepared via a modified sequential deposition process

Seongtak Kim; Taewon Chung; Soohyun Bae; Sang Won Lee; Kyung Dong Lee; Hyunho Kim; Seunghun Lee; Yoonmook Kang; Hae Seok Lee; Donghwan Kim

doi:10.1016/j.orgel.2016.11.014

Improved performance and thermal stability of perovskite solar cells prepared via a modified sequential deposition process

Seongtak Kim, Taewon Chung, Soohyun Bae, Sang Won Lee, Kyung Dong Lee, Hyunho Kim, Seunghun Lee, Yoonmook Kang, Hae Seok Lee, Donghwan Kim

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

22 Citations (Scopus)

Abstract

In conventional sequential deposition, PbI₂-free CH₃NH₃PbI₃ perovskite films can be achieved when the PbI₂ substrate reacts with a relatively low-concentration CH₃NH₃I solution (<8 mg of CH₃NH₃I per 1 mL of IPA) but the film that is formed has only sparse and uneven coverage. On the other hand, a dense CH₃NH₃PbI₃ perovskite film can be formed on a mesoporous TiO₂ substrate when the PbI₂ substrate reacts with a relatively high-concentration MAI solution (>8 mg of CH₃NH₃I per 1 mL of IPA), but unreacted PbI₂ is still present in CH₃NH₃PbI₃ layer in such cases. Here, we developed organic-inorganic perovskite solar cells with high efficiency by preparing dense and PbI₂-free films using a modified sequential deposition process. By utilizing the reaction behavior between PbI₂ and MAI, solar cells with an average power-conversion efficiency of 15.1% and high reproducibility and stability were achieved.

Original language	English
Pages (from-to)	266-273
Number of pages	8
Journal	Organic Electronics
Volume	41
DOIs	https://doi.org/10.1016/j.orgel.2016.11.014
Publication status	Published - 2017 Feb 1

Bibliographical note

Funding Information:
This work was supported by the New and Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), which granted a financial resource (No. 20143030011960) from the Ministry of Trade, Industry, and Energy, Republic of Korea.

Publisher Copyright:
© 2016 Elsevier B.V.

Keywords

Conversion rate
Perovskite
Sequential deposition method
Solar cells
Thermal stability

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
General Chemistry
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/j.orgel.2016.11.014

Cite this

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title = "Improved performance and thermal stability of perovskite solar cells prepared via a modified sequential deposition process",

abstract = "In conventional sequential deposition, PbI2-free CH3NH3PbI3 perovskite films can be achieved when the PbI2 substrate reacts with a relatively low-concentration CH3NH3I solution (<8 mg of CH3NH3I per 1 mL of IPA) but the film that is formed has only sparse and uneven coverage. On the other hand, a dense CH3NH3PbI3 perovskite film can be formed on a mesoporous TiO2 substrate when the PbI2 substrate reacts with a relatively high-concentration MAI solution (>8 mg of CH3NH3I per 1 mL of IPA), but unreacted PbI2 is still present in CH3NH3PbI3 layer in such cases. Here, we developed organic-inorganic perovskite solar cells with high efficiency by preparing dense and PbI2-free films using a modified sequential deposition process. By utilizing the reaction behavior between PbI2 and MAI, solar cells with an average power-conversion efficiency of 15.1% and high reproducibility and stability were achieved.",

keywords = "Conversion rate, Perovskite, Sequential deposition method, Solar cells, Thermal stability",

author = "Seongtak Kim and Taewon Chung and Soohyun Bae and Lee, {Sang Won} and Lee, {Kyung Dong} and Hyunho Kim and Seunghun Lee and Yoonmook Kang and Lee, {Hae Seok} and Donghwan Kim",

note = "Funding Information: This work was supported by the New and Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), which granted a financial resource (No. 20143030011960) from the Ministry of Trade, Industry, and Energy, Republic of Korea. Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

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doi = "10.1016/j.orgel.2016.11.014",

language = "English",

volume = "41",

pages = "266--273",

journal = "Organic Electronics",

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AU - Kim, Seongtak

AU - Chung, Taewon

AU - Bae, Soohyun

AU - Lee, Sang Won

AU - Lee, Kyung Dong

AU - Kim, Hyunho

AU - Lee, Seunghun

AU - Kang, Yoonmook

AU - Lee, Hae Seok

AU - Kim, Donghwan

N1 - Funding Information: This work was supported by the New and Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), which granted a financial resource (No. 20143030011960) from the Ministry of Trade, Industry, and Energy, Republic of Korea. Publisher Copyright: © 2016 Elsevier B.V.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - In conventional sequential deposition, PbI2-free CH3NH3PbI3 perovskite films can be achieved when the PbI2 substrate reacts with a relatively low-concentration CH3NH3I solution (<8 mg of CH3NH3I per 1 mL of IPA) but the film that is formed has only sparse and uneven coverage. On the other hand, a dense CH3NH3PbI3 perovskite film can be formed on a mesoporous TiO2 substrate when the PbI2 substrate reacts with a relatively high-concentration MAI solution (>8 mg of CH3NH3I per 1 mL of IPA), but unreacted PbI2 is still present in CH3NH3PbI3 layer in such cases. Here, we developed organic-inorganic perovskite solar cells with high efficiency by preparing dense and PbI2-free films using a modified sequential deposition process. By utilizing the reaction behavior between PbI2 and MAI, solar cells with an average power-conversion efficiency of 15.1% and high reproducibility and stability were achieved.

AB - In conventional sequential deposition, PbI2-free CH3NH3PbI3 perovskite films can be achieved when the PbI2 substrate reacts with a relatively low-concentration CH3NH3I solution (<8 mg of CH3NH3I per 1 mL of IPA) but the film that is formed has only sparse and uneven coverage. On the other hand, a dense CH3NH3PbI3 perovskite film can be formed on a mesoporous TiO2 substrate when the PbI2 substrate reacts with a relatively high-concentration MAI solution (>8 mg of CH3NH3I per 1 mL of IPA), but unreacted PbI2 is still present in CH3NH3PbI3 layer in such cases. Here, we developed organic-inorganic perovskite solar cells with high efficiency by preparing dense and PbI2-free films using a modified sequential deposition process. By utilizing the reaction behavior between PbI2 and MAI, solar cells with an average power-conversion efficiency of 15.1% and high reproducibility and stability were achieved.

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KW - Sequential deposition method

KW - Solar cells

KW - Thermal stability

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Improved performance and thermal stability of perovskite solar cells prepared via a modified sequential deposition process

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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