[(CH<sub>3</sub>)<sub>3</sub>NCH<sub>2</sub>CH<sub>2</sub>NH<sub>3</sub>]SnI<sub>4</sub>: A Layered Perovskite with Quaternary/Primary Ammonium Dications and Short Interlayer Iodine−Iodine Contacts
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The organic−inorganic hybrid [(CH3)3NCH2CH2NH3]SnI4 presents a layered perovskite structure, templated by an organic dication containing both a primary and a quaternary ammonium group. Due to the high charge density and small size of the organic cation, the separation of the perovskite layers is small and short iodine−iodine contacts of 4.19 Å are formed between the layers. Optical thin-film measurements on this compound indicate a significant red shift of the exciton peak (630 nm) associated with the band gap, as compared with other SnI42--based layered perovskite structures.
创建时间：
2016-08-17
