Solution grown PbS nanoparticle films

Band gap engineering in PbS nanostructured thin films from near-infrared down to visible range by in situ Cd-doping

“…In this viewpoint, PbS has been grown in various forms by different techniques such as chemical bath deposition (CBD), vacuum evaporation, spray pyrolysis, electrodeposition, etc. [3][4][5][6]. Among these techniques, CBD offers simple, cost effective, and industrially scalable route for the production of high-quality films, without the need for high-deposition temperatures.…”

Characterization of PbS nanoparticles synthesized by chemical bath deposition

“…Mixed cationic/anionic surfactants reverse-micelle solutions were also used in synthesis of morphology-controlled one-dimensional nanostructures and hierarchical architectures at low temperature [16][17][18]. Using reverse-micelle and microemulsion nanoreactors for the preparation of PbS nanocrystals has also been reported [19,20]. Uniform PbS nanocubes have been synthesized by using a surfactant.…”

Silica-coated ZnS quantum dots as fluorescent probes for the sensitive detection of Pb2+ ions

“…The band gap of CuS nanocrystals has been reported to be in the range between 1.25 and 2.81 eV (Mageshwari et al 2011;Nair et al 1998;Raevskaya et al 2004;Yildirim et al 2009). The band gap of PbS nanocrystals has been reported to be in the range 0.5-2.32 eV (Joshi et al 2004;Mukherjee et al 1994;Nanda et al 2002) and even as high as 5.2 eV (Thielsch et al 1998). Although the exact band gaps of CuS and PbS ultrafine grains formed on the surface of ZnS cores are unknown, we assume that the electron and hole transfer from the excited ZnS to the energy levels of PbS may be faster than to that of CuS, bringing about the quicker fluorescence quenching by Pb 2?…”