| Title |
Cross-linkable naphthalene diimide acceptors for applications in photovoltaic devices |
| Authors |
Svirskaite, Lauryna Monika ; Kamarauskas, Egidijus ; Jegorove, Aiste ; Getautis, Vytautas ; Malinauskas, Tadas ; Jankauskas, Vygintas ; Cepas, Romualdas J ; Gruodis, Alytis ; Genevicius, Kristijonas |
| DOI |
10.1098/rsos.251725 |
| Full Text |
|
| Is Part of |
Royal Society Open science.. London : Royal Society. 2026, vol. 13, iss. 5, art. no. 251725, p. 1-12.. ISSN 2054-5703 |
| Keywords [eng] |
n-type semiconductors ; cross-linking polymerization ; naphthalene diimide ; charge carriers transport ; photovoltaics |
| Abstract [eng] |
Cross-linkable naphthalene diimide (NDI) electrontransporting materials (ETMs) bearing vinylbenzyl groups were designed, synthesized and evaluated for possible photovoltaic applications. A one-pot condensation followed by O-alkylation reaction was employed to synthesize new compounds. The new NDIs are sufficiently thermally and electrochemically stable owing to the presence of vinyl groups; all compounds are able to undergo thermal cross-linking by heating at 199°C and 213°C. Differential scanning calorimetry (DSC) and solubility tests revealed a two-step cross-linking mechanism: a low-temperature linear polymerization followed by high-temperature threedimensional network formation. Cross-linking causes minimal changes in electron mobility in neat films, but in donor– acceptor blends it increases electron mobility by a factor of approximately 2–3, maintains stable hole transport, suppresses deep-trap formation and stabilizes quantum efficiency of photogeneration over time. These results establish vinylbenzyl-functionalized NDIs as promising, solution-processable n-type semiconductors for solventresistant, thermally robust electron-transport layers for perovskite or organic photovoltaics. |
| Published |
London : Royal Society |
| Type |
Journal article |
| Language |
English |
| Publication date |
2026 |
| CC license |
|
