Diode fabricated by layer by layer deposition of semiconductor nanoparticles

We report the development of a modified polyelectrolyte deposition technique for building multilayer thin films. The quantum dots of zinc sulphide nanoparticles doped with manganese were synthesized by co-precipitation techniques and the nanoparticles were found to consist of crystallites that were estimated to be around 2.2 nm. The modified polyelectrolyte deposition technique has been used for the growth of multifunctional nanoparticulate ZnS thin films and Schottky diodes. The Schottky junction device exhibit diode-like behavior and this technique shows promise for large area construction of diodes using wet-chemical synthesis of semiconductor nanoparticles.