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Post-functionalization of polyvinylcarbazoles: An open route towards hole transporting materials for perovskite solar cells

Abstract : We report on the potential of tuning poly(9-vinylcarbazole) (PVK) properties through functionalization for an application as hole transport material (HTM) for perovskite solar cells (PSCs). The synthesized PVK-based polymers were substituted with moieties of interest to improve the solubility, the charge transport properties, or to tune energy levels. Bis(4-methoxyphenyl)amine moieties were found to improve the hole mobility and to increase the HOMO level of the PVK. Therefore, PSCs employing PVK-[N(PhOCH3)2]2 as HTM exhibited a best PCE of 16.7%. Compared to spiro-OMeTAD, first studies have shown that PVK-[N(PhOCH3)2]2 could extend PSC lifetime.
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Camille Geffroy, Eftychia Grana, Muhammad Mumtaz, Ludmila Cojocaru, Eric Cloutet, et al.. Post-functionalization of polyvinylcarbazoles: An open route towards hole transporting materials for perovskite solar cells. Solar Energy, Elsevier, 2019, 193, pp.878-884. ⟨10.1016/j.solener.2019.10.034⟩. ⟨hal-02330648⟩

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