Controlled Redox of Lithium-Ion Endohedral Fullerene for Efficient and Stable Metal Electrode-Free Perovskite Solar Cells

Il Jeon; Ahmed Shawky; Hao Sheng Lin; Seungju Seo; Hiroshi Okada; Jin Wook Lee; Amrita Pal; Shaun Tan; Anton Anisimov; Esko I. Kauppinen; Yang Yang; Sergei Manzhos; Shigeo Maruyama; Yutaka Matsuo

doi:10.1021/jacs.9b06418

Controlled Redox of Lithium-Ion Endohedral Fullerene for Efficient and Stable Metal Electrode-Free Perovskite Solar Cells

Il Jeon
, Ahmed Shawky
, Hao Sheng Lin
, Seungju Seo
, Hiroshi Okada
, Jin Wook Lee
, Amrita Pal
, Shaun Tan
, Anton Anisimov
, Esko I. Kauppinen
, Yang Yang
, Sergei Manzhos
, Shigeo Maruyama
, Yutaka Matsuo

The University of Tokyo
Korea University
Central Metallurgical Research & Development Institute
Sungkyunkwan University
University of California at Los Angeles
National University of Singapore
Canatu Ltd.
Aalto University
Institut national de la recherche scientifique
National Institute of Advanced Industrial Science and Technology
Nagoya University

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

73 Scopus citations

Abstract

High efficiency perovskite solar cells have underpinned the rapid growth of the field. However, their low device stability limits further advancement. Hygroscopic lithium bis(trifluoromethanesulfonyl)imide (Li⁺TFSI^-) and metal electrode are the main causes of the device instability. In this work, the redox reaction between lithium-ion endohedral fullerenes and 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobi-fluorene (spiro-MeOTAD) was controlled to optimize the amount of oxidized spiro-MeOTAD and antioxidizing neutral endohedral fullerenes. Application of this mixture to metal-free carbon nanotube (CNT)-laminated perovskite solar cells resulted in 17.2% efficiency with a stability time of more than 1100 h under severe conditions (temperature = 60 °C, humidity = 70%). Such high performance is attributed to the uninhibited charge flow, no metal-ion migration, and the enhanced antioxidizing activity of the devices.

Original language	English
Pages (from-to)	16553-16558
Number of pages	6
Journal	Journal of the American Chemical Society
Volume	141
Issue number	42
DOIs	https://doi.org/10.1021/jacs.9b06418
State	Published - 23 Oct 2019
Externally published	Yes

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SDG 7 Affordable and Clean Energy

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10.1021/jacs.9b06418

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Jeon, I., Shawky, A., Lin, H. S., Seo, S., Okada, H., Lee, J. W., Pal, A., Tan, S., Anisimov, A., Kauppinen, E. I., Yang, Y., Manzhos, S., Maruyama, S., & Matsuo, Y. (2019). Controlled Redox of Lithium-Ion Endohedral Fullerene for Efficient and Stable Metal Electrode-Free Perovskite Solar Cells. Journal of the American Chemical Society, 141(42), 16553-16558. https://doi.org/10.1021/jacs.9b06418

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title = "Controlled Redox of Lithium-Ion Endohedral Fullerene for Efficient and Stable Metal Electrode-Free Perovskite Solar Cells",

abstract = "High efficiency perovskite solar cells have underpinned the rapid growth of the field. However, their low device stability limits further advancement. Hygroscopic lithium bis(trifluoromethanesulfonyl)imide (Li+TFSI-) and metal electrode are the main causes of the device instability. In this work, the redox reaction between lithium-ion endohedral fullerenes and 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobi-fluorene (spiro-MeOTAD) was controlled to optimize the amount of oxidized spiro-MeOTAD and antioxidizing neutral endohedral fullerenes. Application of this mixture to metal-free carbon nanotube (CNT)-laminated perovskite solar cells resulted in 17.2\% efficiency with a stability time of more than 1100 h under severe conditions (temperature = 60 °C, humidity = 70\%). Such high performance is attributed to the uninhibited charge flow, no metal-ion migration, and the enhanced antioxidizing activity of the devices.",

author = "Il Jeon and Ahmed Shawky and Lin, \{Hao Sheng\} and Seungju Seo and Hiroshi Okada and Lee, \{Jin Wook\} and Amrita Pal and Shaun Tan and Anton Anisimov and Kauppinen, \{Esko I.\} and Yang Yang and Sergei Manzhos and Shigeo Maruyama and Yutaka Matsuo",

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doi = "10.1021/jacs.9b06418",

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Jeon, I, Shawky, A, Lin, HS, Seo, S, Okada, H, Lee, JW, Pal, A, Tan, S, Anisimov, A, Kauppinen, EI, Yang, Y, Manzhos, S, Maruyama, S & Matsuo, Y 2019, 'Controlled Redox of Lithium-Ion Endohedral Fullerene for Efficient and Stable Metal Electrode-Free Perovskite Solar Cells', Journal of the American Chemical Society, vol. 141, no. 42, pp. 16553-16558. https://doi.org/10.1021/jacs.9b06418

TY - JOUR

T1 - Controlled Redox of Lithium-Ion Endohedral Fullerene for Efficient and Stable Metal Electrode-Free Perovskite Solar Cells

AU - Jeon, Il

AU - Shawky, Ahmed

AU - Lin, Hao Sheng

AU - Seo, Seungju

AU - Okada, Hiroshi

AU - Lee, Jin Wook

AU - Pal, Amrita

AU - Tan, Shaun

AU - Anisimov, Anton

AU - Kauppinen, Esko I.

AU - Yang, Yang

AU - Manzhos, Sergei

AU - Maruyama, Shigeo

AU - Matsuo, Yutaka

PY - 2019/10/23

Y1 - 2019/10/23

N2 - High efficiency perovskite solar cells have underpinned the rapid growth of the field. However, their low device stability limits further advancement. Hygroscopic lithium bis(trifluoromethanesulfonyl)imide (Li+TFSI-) and metal electrode are the main causes of the device instability. In this work, the redox reaction between lithium-ion endohedral fullerenes and 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobi-fluorene (spiro-MeOTAD) was controlled to optimize the amount of oxidized spiro-MeOTAD and antioxidizing neutral endohedral fullerenes. Application of this mixture to metal-free carbon nanotube (CNT)-laminated perovskite solar cells resulted in 17.2% efficiency with a stability time of more than 1100 h under severe conditions (temperature = 60 °C, humidity = 70%). Such high performance is attributed to the uninhibited charge flow, no metal-ion migration, and the enhanced antioxidizing activity of the devices.

AB - High efficiency perovskite solar cells have underpinned the rapid growth of the field. However, their low device stability limits further advancement. Hygroscopic lithium bis(trifluoromethanesulfonyl)imide (Li+TFSI-) and metal electrode are the main causes of the device instability. In this work, the redox reaction between lithium-ion endohedral fullerenes and 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobi-fluorene (spiro-MeOTAD) was controlled to optimize the amount of oxidized spiro-MeOTAD and antioxidizing neutral endohedral fullerenes. Application of this mixture to metal-free carbon nanotube (CNT)-laminated perovskite solar cells resulted in 17.2% efficiency with a stability time of more than 1100 h under severe conditions (temperature = 60 °C, humidity = 70%). Such high performance is attributed to the uninhibited charge flow, no metal-ion migration, and the enhanced antioxidizing activity of the devices.

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DO - 10.1021/jacs.9b06418

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SN - 0002-7863

VL - 141

SP - 16553

EP - 16558

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 42

ER -

Controlled Redox of Lithium-Ion Endohedral Fullerene for Efficient and Stable Metal Electrode-Free Perovskite Solar Cells

Abstract

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