مشخصات پژوهش

In this work, the PbS nanocrystalline thin films were prepared by chemical bath deposition method on the glass and unpolished Si(100) substrates. Triethanolamine was used as additive in the aqueous solution, which resulted in the enhancement of the luminescence of nanocrystalline PbS thin films. The introduction of triethanolamine reduced the grain size and increased the optical band gap of the PbS nanoparticles. The crystalline size of PbS films deposited at two different bath temperatures of 25 C (PbS-25) and 40 C (PbS-40) and at different deposition times was estimated to be around 5–50 nm by XRD analyses. The films at 60 C (PbS-60) were prepared and studied. The structural, morphological and optical properties of the obtained films were investigated. The energydispersive X-ray of the typical PbS film was presented, which confirmed the formation of PbS. The mechanism of growth of the PbS crystallites at different bath temperatures was described. The confinement