| Title |
Tuning structural isomers of phenylenediammonium to afford efficient and stable perovskite solar cells and modules / |
| Authors |
Liu, Cheng ; Yang, Yi ; Rakstys, Kasparas ; Mahata, Arup ; Franckevičius, Marius ; Mosconi, Edoardo ; Skackauskaite, Raminta ; Ding, Bin ; Brooks, Keith G ; Usiobo, Onovbaramwen Jennifer ; Audinot, Jean-Nicolas ; Kanda, Hiroyuki ; Driukas, Simonas ; Kavaliauskaitė, Gabrielė ; Gulbinas, Vidmantas ; Dessimoz, Marc ; Getautis, Vytautas ; De Angelis, Filippo ; Ding, Yong ; Dai, Songyuan ; Dyson, Paul J ; Nazeeruddin, Mohammad Khaja |
| DOI |
10.1038/s41467-021-26754-2 |
| Full Text |
|
| Is Part of |
Nature communications.. Berlin : Nature. 2021, vol. 12, iss. 1, art. no. 6394, p. 1-9.. ISSN 2041-1723 |
| Keywords [eng] |
halide perovskites ; hole transporting material ; charge transport |
| Abstract [eng] |
Organic halide salt passivation is considered to be an essential strategy to reduce defects in state-of-the-art perovskite solar cells (PSCs). This strategy, however, suffers from the inevitable formation of in-plane favored two-dimensional (2D) perovskite layers with impaired charge transport, especially under thermal conditions, impeding photovoltaic performance and device scale-up. To overcome this limitation, we studied the energy barrier of 2D perovskite formation from ortho-, meta- and para-isomers of (phenylene)di(ethylammonium) iodide (PDEAI2) that were designed for tailored defect passivation. Treatment with the most sterically hindered ortho-isomer not only prevents the formation of surficial 2D perovskite film, even at elevated temperatures, but also maximizes the passivation effect on both shallow- and deep-level defects. The ensuing PSCs achieve an efficiency of 23.9% with longterm operational stability (over 1000 h). Importantly, a record efficiency of 21.4% for the perovskite module with an active area of 26 cm2 was achieved. |
| Published |
Berlin : Nature |
| Type |
Journal article |
| Language |
English |
| Publication date |
2021 |
| CC license |
|
