[(CH3)3NCH2CH2NH3]SnI4: A Layered Perovskite with Quaternary/Primary Ammonium Dications and Short Interlayer Iodine−Iodine Contacts
- 13 February 2003
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 42 (5) , 1400-1402
- https://doi.org/10.1021/ic0261981
Abstract
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.Keywords
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