Effect of lead thiocyanate ions on performance of tin-based perovskite solar cells

Do Yeon Heo; Tae Hyung Lee; Agnieszka Iwan; Ladislav Kavan; Maria Omatova; Eva Majkova; Katalin Kamarás; Ho Won Jang; Soo Young Kim

doi:10.1016/j.jpowsour.2020.228067

Effect of lead thiocyanate ions on performance of tin-based perovskite solar cells

Do Yeon Heo
, Tae Hyung Lee
, Agnieszka Iwan
, Ladislav Kavan
, Maria Omatova
, Eva Majkova
, Katalin Kamarás
, Ho Won Jang
, Soo Young Kim^*

^*Corresponding author for this work

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

24 Citations (Scopus)

Abstract

Perovskite solar cells (PSCs) have a high efficiency, and their price is relatively low; thus, they are attracting considerable attention as a substitute for expensive Si solar cells. However, highly efficient PSCs are not ecofriendly, because they contain toxic metals such as Pb. Therefore, we develop Sn-based PSCs to reduce the Pb content. First, 11 different perovskite precursors are synthesized by increasing the amount of Pb(SCN)₂ from 0 to 0.5 M in CH(NH₂)₂SnI₃. Then, PSCs are fabricated, and their characteristics are compared. Scanning electron microscopy confirms that the proper amount of Pb(SCN)₂ uniformizes the grain size of the perovskite layer and reduces the amounts of pinholes. The crystallization and optical absorption of each perovskite layer are confirmed by X-ray diffraction analysis and ultraviolet–visible spectra, and the characteristics of the PSCs are confirmed by the current density–voltage graph. The Sn-based PSCs with 0.25 M Pb(SCN)₂ exhibit a high efficiency of 8.4%, which is significantly higher than that (1.6%) of Sn-based PSCs without Pb(SCN)₂. The calculated Pb concentration of CH₃NH₃PbI₃ is 0.37 g/mL, while that of CH(NH₂)₂SnI₃ containing Pb(SCN)₂ is 0.08 g/mL. These results indicate the possibility of producing highly efficient PSCs with reduced lead content.

Original language	English
Article number	228067
Journal	Journal of Power Sources
Volume	458
DOIs	https://doi.org/10.1016/j.jpowsour.2020.228067
Publication status	Published - 2020 May 15

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Additive
Perovskite solar cell
Thiocyanate

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

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

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10.1016/j.jpowsour.2020.228067

Cite this

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title = "Effect of lead thiocyanate ions on performance of tin-based perovskite solar cells",

abstract = "Perovskite solar cells (PSCs) have a high efficiency, and their price is relatively low; thus, they are attracting considerable attention as a substitute for expensive Si solar cells. However, highly efficient PSCs are not ecofriendly, because they contain toxic metals such as Pb. Therefore, we develop Sn-based PSCs to reduce the Pb content. First, 11 different perovskite precursors are synthesized by increasing the amount of Pb(SCN)2 from 0 to 0.5 M in CH(NH2)2SnI3. Then, PSCs are fabricated, and their characteristics are compared. Scanning electron microscopy confirms that the proper amount of Pb(SCN)2 uniformizes the grain size of the perovskite layer and reduces the amounts of pinholes. The crystallization and optical absorption of each perovskite layer are confirmed by X-ray diffraction analysis and ultraviolet–visible spectra, and the characteristics of the PSCs are confirmed by the current density–voltage graph. The Sn-based PSCs with 0.25 M Pb(SCN)2 exhibit a high efficiency of 8.4\%, which is significantly higher than that (1.6\%) of Sn-based PSCs without Pb(SCN)2. The calculated Pb concentration of CH3NH3PbI3 is 0.37 g/mL, while that of CH(NH2)2SnI3 containing Pb(SCN)2 is 0.08 g/mL. These results indicate the possibility of producing highly efficient PSCs with reduced lead content.",

keywords = "Additive, Perovskite solar cell, Thiocyanate",

author = "Heo, \{Do Yeon\} and Lee, \{Tae Hyung\} and Agnieszka Iwan and Ladislav Kavan and Maria Omatova and Eva Majkova and Katalin Kamar{\'a}s and Jang, \{Ho Won\} and Kim, \{Soo Young\}",

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year = "2020",

month = may,

day = "15",

doi = "10.1016/j.jpowsour.2020.228067",

language = "English",

volume = "458",

journal = "Journal of Power Sources",

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T1 - Effect of lead thiocyanate ions on performance of tin-based perovskite solar cells

AU - Heo, Do Yeon

AU - Lee, Tae Hyung

AU - Iwan, Agnieszka

AU - Kavan, Ladislav

AU - Omatova, Maria

AU - Majkova, Eva

AU - Kamarás, Katalin

AU - Jang, Ho Won

AU - Kim, Soo Young

PY - 2020/5/15

Y1 - 2020/5/15

N2 - Perovskite solar cells (PSCs) have a high efficiency, and their price is relatively low; thus, they are attracting considerable attention as a substitute for expensive Si solar cells. However, highly efficient PSCs are not ecofriendly, because they contain toxic metals such as Pb. Therefore, we develop Sn-based PSCs to reduce the Pb content. First, 11 different perovskite precursors are synthesized by increasing the amount of Pb(SCN)2 from 0 to 0.5 M in CH(NH2)2SnI3. Then, PSCs are fabricated, and their characteristics are compared. Scanning electron microscopy confirms that the proper amount of Pb(SCN)2 uniformizes the grain size of the perovskite layer and reduces the amounts of pinholes. The crystallization and optical absorption of each perovskite layer are confirmed by X-ray diffraction analysis and ultraviolet–visible spectra, and the characteristics of the PSCs are confirmed by the current density–voltage graph. The Sn-based PSCs with 0.25 M Pb(SCN)2 exhibit a high efficiency of 8.4%, which is significantly higher than that (1.6%) of Sn-based PSCs without Pb(SCN)2. The calculated Pb concentration of CH3NH3PbI3 is 0.37 g/mL, while that of CH(NH2)2SnI3 containing Pb(SCN)2 is 0.08 g/mL. These results indicate the possibility of producing highly efficient PSCs with reduced lead content.

AB - Perovskite solar cells (PSCs) have a high efficiency, and their price is relatively low; thus, they are attracting considerable attention as a substitute for expensive Si solar cells. However, highly efficient PSCs are not ecofriendly, because they contain toxic metals such as Pb. Therefore, we develop Sn-based PSCs to reduce the Pb content. First, 11 different perovskite precursors are synthesized by increasing the amount of Pb(SCN)2 from 0 to 0.5 M in CH(NH2)2SnI3. Then, PSCs are fabricated, and their characteristics are compared. Scanning electron microscopy confirms that the proper amount of Pb(SCN)2 uniformizes the grain size of the perovskite layer and reduces the amounts of pinholes. The crystallization and optical absorption of each perovskite layer are confirmed by X-ray diffraction analysis and ultraviolet–visible spectra, and the characteristics of the PSCs are confirmed by the current density–voltage graph. The Sn-based PSCs with 0.25 M Pb(SCN)2 exhibit a high efficiency of 8.4%, which is significantly higher than that (1.6%) of Sn-based PSCs without Pb(SCN)2. The calculated Pb concentration of CH3NH3PbI3 is 0.37 g/mL, while that of CH(NH2)2SnI3 containing Pb(SCN)2 is 0.08 g/mL. These results indicate the possibility of producing highly efficient PSCs with reduced lead content.

KW - Additive

KW - Perovskite solar cell

KW - Thiocyanate

UR - https://www.scopus.com/pages/publications/85082190323

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DO - 10.1016/j.jpowsour.2020.228067

M3 - Article

AN - SCOPUS:85082190323

SN - 0378-7753

VL - 458

JO - Journal of Power Sources

JF - Journal of Power Sources

M1 - 228067

ER -

Effect of lead thiocyanate ions on performance of tin-based perovskite solar cells

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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