Lithium‐Ion Endohedral Fullerene (Li+@C60) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti‐Oxidation,Angewandte Chemie International Edition

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Lithium‐Ion Endohedral Fullerene (Li+@C60) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti‐Oxidation
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-03-13 , DOI: 10.1002/anie.201800816
Il Jeon ₁ , Hiroshi Ueno ₂ , Seungju Seo ₁ , Kerttu Aitola ₃ , Ryosuke Nishikubo ₄ , Akinori Saeki ₄ , Hiroshi Okada ₁ , Gerrit Boschloo ₃ , Shigeo Maruyama _{1,

5} , Yutaka Matsuo _{1,

2}

Affiliation

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.

中文翻译：

稳定钙钛矿太阳能电池中的锂离子内表面富勒烯（Li + @ C60）掺杂剂可引起即时掺杂和抗氧化作用

在这里，我们报告使用[李⁺ @C ₆₀ ] TFSI ^-如铅卤化物钙钛矿型太阳能电池的螺-MeOTAD掺杂剂。这种做法给了一个空气中稳定了近10倍，使用常规李设备⁺ TFSI ^-。这种高稳定性归因于的疏水性质[李⁺ @C ₆₀ ] TFSI ^-排斥湿气和吸收侵入氧，从而保护了钙钛矿设备免于降解。此外，[李⁺ @C ₆₀ ] TFSI ^-可以在不需要氧气的情况下氧化spiro-MeOTAD。封装的设备在环境条件下照明时，在超过1000小时内表现出出色的空气稳定性。

更新日期：2018-03-13

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