Nussbaum, SimonSocie, EtienneFish, George C.Diercks, Nicolas J.Hempel, HannesFriedrich, DennisMoser, Jacques-E.Yum, Jun-HoSivula, Kevin2023-06-052023-06-052023-06-052023-05-1510.1039/d3sc00783ahttps://infoscience.epfl.ch/handle/20.500.14299/197936WOS:000990529200001Incorporating organic semiconducting spacer cations into layered lead halide perovskite structures provides a powerful approach to mitigate the typical strong dielectric and quantum confinement effects by inducing charge-transfer between the organic and inorganic layers. Herein we report the synthesis and characterization of thin films of novel DJ-phase organic-inorganic layered perovskite semiconductors using a naphthalene diimide (NDI) based divalent spacer cation, which is shown to accept photogenerated electrons from the inorganic layer. With alkyl chain lengths of 6 carbons, an NDI-based thin film exhibited electron mobility (based on space charge-limited current for quasi-layered n = 5 material) was found to be as high as 0.03 cm(2) V-1 s(-1) with no observable trap-filling region suggesting trap passivation by the NDI spacer cation.Chemistry, MultidisciplinaryChemistrymetal halide perovskitescarrier dynamicsefficientexcitonsmobilityfilmstext::journal::journal article::research article