Photophysical properties of tetrabutylammonium metal chlorides with different inorganic frameworks†
Abstract
The luminescence of single crystals of (TBA)PbCl3, (TBA)2Sb2Cl8, (TBA)3Bi2Cl9 and (TBA)SnCl5·2EtOH (TBA = tetrabutylammonium, EtOH = Ethanol) synthsized were assigned distinctively to the centres of self-trapped excitons (STEs), TBA+, TBA+ and co-emission of STEs and TBA+. This work demonstrates that organic cations without benzene or aromatic rings can also be used as the sole luminescence centres for metal halides.