| Title |
Branched fluorenylidene derivatives with low ionization potentials as hole-transporting materials for perovskite colar cells / |
| Authors |
Jegorovė, Aistė ; Xia, Jianxing ; Steponaitis, Matas ; Daskeviciene, Maryte ; Jankauskas, Vygintas ; Gruodis, Alytis ; Kamarauskas, Egidijus ; Malinauskas, Tadas ; Rakstys, Kasparas ; Alamry, Khalid A ; Getautis, Vytautas ; Nazeeruddin, Mohammad Khaja |
| DOI |
10.1021/acs.chemmater.3c00708 |
| Full Text |
|
| Is Part of |
Chemistry of materials.. Washington DC : American Chemical Society. 2023, vol. 35, iss. 15, p. 5914-5923.. ISSN 0897-4756. eISSN 1520-5002 |
| Abstract [eng] |
A group of small-molecule hole-transporting materials (HTMs) that are based on fluorenylidene fragments were synthesized and tested in perovskite solar cells (PSCs). The investigated compounds were synthesized by a facile two-step synthesis, and their properties were measured using thermoanalytical, optoelectronic, and photovoltaic methods. The champion PSC device that was doped with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) reached a power conversion efficiency of 22.83%. The longevity of the PSC device with the best performing HTM, V1387, was evaluated in different conditions and compared to that of 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (spiro-MeOTAD), showing improved stability. This work provides an alternative HTM strategy for fabricating efficient and stable PSCs. |
| Published |
Washington DC : American Chemical Society |
| Type |
Journal article |
| Language |
English |
| Publication date |
2023 |
| CC license |
|
