1D conductance in cetineites: A new class of chemically synthesized nanoporous semiconductors

Cetineites are crystalline nanoporous oxochalcogenoantimonates with photose miconducting host lattice. The conduction band, which predominantly carries the photoconduction; results from the interaction of chemically different subunits in an alternating sequence along the crystallographic c-axis. We s how that it is possible to obtain an exact analytical expression for the co nductance for such a one-dimensional periodic system with a complex unit ce ll, were we consider the case of small extent of each individual potential as compared to any other typical lengths of the system. By means of this ba sic consideration we can qualitatively describe the characteristics of the experimentally observed wavelength dependent photoconductivity, obtained fr om single crystals of this new material.