Lithium‐Ion Endohedral Fullerene (Li + @C 60 ) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti‐Oxidation | Zendy

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

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Lithium‐Ion Endohedral Fullerene (Li + @C 60 ) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti‐Oxidation

Author(s) -

Jeon Il,

Ueno Hiroshi,

Seo Seungju,

Aitola Kerttu,

Nishikubo Ryosuke,

Saeki Akinori,

Okada Hiroshi,

Boschloo Gerrit,

Maruyama Shigeo,

Matsuo Yutaka

Publication year - 2018

Publication title -

angewandte chemie

Language(s) - English

Resource type - Journals

eISSN - 1521-3757

pISSN - 0044-8249

DOI - 10.1002/ange.201800816

Subject(s) - dopant , fullerene , perovskite (structure) , glovebox , halide , doping , lithium (medication) , oxygen , materials science , inorganic chemistry , chemical engineering , chemistry , organic chemistry , optoelectronics , medicine , endocrinology , engineering

Herein, we report use of [Li + @C 60 ]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 + @C 60 ]TFSI − repelling moisture and absorbing intruding oxygen, thereby protecting the perovskite device from degradation. Furthermore, [Li + @C 60 ]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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