Optical and related properties of natural one-dimensional semiconductors based on PbI and SnI units

Optical absorption, reflectance, photoluminescence, photoluminescence excitation and photoconductivity spectra of [NH2C(I)=NH2]3MI5 (M=Pb, Sn), (Bu4N)PbI3 and similar 1D semiconductors at room temperature are reported and compared with those of the corresponding 2D and 0D analogues.