Lithium-Ion Endohedral Fullerene (Li+@C60) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti-Oxidation

Il Jeon; Hiroshi Ueno; Seungju Seo; Kerttu Aitola; Ryosuke Nishikubo; Akinori Saeki; Hiroshi Okada; Gerrit Boschloo; Shigeo Maruyama; Yutaka Matsuo

doi:10.1002/anie.201800816

Lithium-Ion Endohedral Fullerene (Li⁺@C₆₀) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti-Oxidation

Il Jeon, Hiroshi Ueno, Seungju Seo, Kerttu Aitola, Ryosuke Nishikubo, Akinori Saeki, Hiroshi Okada, Gerrit Boschloo, Shigeo Maruyama, Yutaka Matsuo

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

61 Citations (Scopus)

Abstract

Herein, we report use of [Li⁺@C₆₀]TFSI⁻ as a dopant for spiro-MeOTAD in lead halide perovskite solar cells. This approach gave an air stability nearly 10-fold that of conventional devices using Li⁺TFSI⁻. Such high stability is attributed to the hydrophobic nature of [Li⁺@C₆₀]TFSI⁻ repelling moisture and absorbing intruding oxygen, thereby protecting the perovskite device from degradation. Furthermore, [Li⁺@C₆₀]TFSI⁻ could oxidize spiro-MeOTAD without the need for oxygen. The encapsulated devices exhibited outstanding air stability for more than 1000 h while illuminated under ambient conditions.

Original language	English
Pages (from-to)	4607-4611
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	57
Issue number	17
DOIs	https://doi.org/10.1002/anie.201800816
Publication status	Published - 2018 Apr 16
Externally published	Yes

Keywords

air stability
doping
fullerenes
lithium
perovskite solar cells

ASJC Scopus subject areas

Catalysis
Chemistry(all)

Access to Document

10.1002/anie.201800816

Cite this

Lithium-Ion Endohedral Fullerene (Li⁺@C₆₀) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti-Oxidation. / Jeon, Il; Ueno, Hiroshi; Seo, Seungju; Aitola, Kerttu; Nishikubo, Ryosuke; Saeki, Akinori; Okada, Hiroshi; Boschloo, Gerrit; Maruyama, Shigeo; Matsuo, Yutaka.

In: Angewandte Chemie - International Edition, Vol. 57, No. 17, 16.04.2018, p. 4607-4611.

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

Jeon, Il ; Ueno, Hiroshi ; Seo, Seungju ; Aitola, Kerttu ; Nishikubo, Ryosuke ; Saeki, Akinori ; Okada, Hiroshi ; Boschloo, Gerrit ; Maruyama, Shigeo ; Matsuo, Yutaka. / Lithium-Ion Endohedral Fullerene (Li⁺@C₆₀) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti-Oxidation. In: Angewandte Chemie - International Edition. 2018 ; Vol. 57, No. 17. pp. 4607-4611.

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abstract = "Herein, we report use of [Li+@C60]TFSI− as a dopant for spiro-MeOTAD in lead halide perovskite solar cells. This approach gave an air stability nearly 10-fold that of conventional devices using Li+TFSI−. Such high stability is attributed to the hydrophobic nature of [Li+@C60]TFSI− repelling moisture and absorbing intruding oxygen, thereby protecting the perovskite device from degradation. Furthermore, [Li+@C60]TFSI− could oxidize spiro-MeOTAD without the need for oxygen. The encapsulated devices exhibited outstanding air stability for more than 1000 h while illuminated under ambient conditions.",

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note = "Funding Information: We thank the Research and Education Consortium for Innovation of Advanced Integrated Science by Japan Science and Technology (JST), Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant Numbers JP15H05760, JP16H02285, 17K04970, and 17H06609), and support from the Thousand Talent Plan for Foreign Experts. Publisher Copyright: {\textcopyright} 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",

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AU - Aitola, Kerttu

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AU - Saeki, Akinori

AU - Okada, Hiroshi

AU - Boschloo, Gerrit

AU - Maruyama, Shigeo

AU - Matsuo, Yutaka

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