Odd–Even Alkyl Chain Effects on the Structure and Charge Carrier Transport of Two-Dimensional Sn-Based Perovskite Semiconductors

• DOI: 10.1021/jacs.4c03936
• Publication Date: 2024-07-02T13:31:32Z
• Authors: Shuanglong Wang; Mukunda Mandal; Heng Zhang; Dag W. Breiby; Okan Yildiz; Zhitian Ling; George Floudas; Mischa Bonn; Denis Andrienko; Hai I. Wang; Paul W. M. Blom; Wojciech Pisula; Tomasz Marszalek
• Keywords: Charge carrier; Organic semiconductor

Oscillations in the chemical or physical properties of materials, composed an odd even number connected repeating methylene units, are a well-known phenomenon organic chemistry and materials science. So far, such behavior has not been reported for important class perovskite semiconductors. This work reports distinct odd–even oscillation molecular structure charge carrier transport phenylalkylammonium two-dimensional (2D) Sn-based perovskites which alkyl chains cations contain varying carbon numbers. Density functional theory calculations grazing-incidence wide-angle X-ray scattering characterization reveal that with ligands containing chain atoms display disordered crystal lattice tilted inorganic octahedra accompanied by reduced mobilities. In contrast, form more ordered structures, resulting improved Our findings disclose importance minor changes conformation have effect on morphology, photophysical properties, 2D layered perovskites, showcasing engineering to control key