@article{oai:nagoya.repo.nii.ac.jp:00029316,
 author = {Jeon, Il and Shawky, Ahmed and Lin, Hao-Sheng and Seo, Seungju and Okada, Hiroshi and Lee, Jin-Wook and Pal, Amrita and Tan, Shaun and Anisimov, Anton and Kauppinen, Esko I. and Yang, Yang and Manzhos, Sergei and Maruyama, Shigeo and Matsuo, Yutaka},
 issue = {42},
 journal = {Journal of the American Chemical Society},
 month = {Oct},
 note = {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., ファイル公開：2020-10-23},
 pages = {16553--16558},
 title = {Controlled Redox of Lithium-Ion Endohedral Fullerene for Efficient and Stable Metal Electrode-Free Perovskite Solar Cells},
 volume = {141},
 year = {2019}
}