Syntheses of Ag, PbSe, and PbTe nanocrystals and their binary self-assembly exploration at low size-ratio.
Nanocrystals of Ag, PbSe, and PbTe were prepared via a high-temperature organic solution approach, respectively. Using a size-selection technique, the size-distribution of each set of nanocrystals could be fine-tuned and finally monodisperse products were achieved. Superlattice structure of binary self-assemblies in low size-ratio were also explored and characterized by transmission electron microscopy. It is realized that a success of achieving binary self-assembly pattern is greatly dependent on several key factors including particle size-distributions, relative concentrations of both components, as well as the size-ratios between Ag and PbSe (or PbTe) nanocrystals.
Lu
Weigang
W
Department of Chemistry and Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148, USA.
Fang
Jiye
J
Lin
Jun
J
Zhang
Jun
J
Sun
Zhaoyong
Z
Stokes
Kevin L
KL
D007854:Lead / Q000737:chemistry*; D046911:Macromolecular Substances; D008854:Microscopy, Electron; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods; D010316:Particle Size; D018036:Selenium Compounds / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013691:Tellurium / Q000737:chemistry*; D014961:X-Ray Diffraction
D046911:Macromolecular Substances; D018036:Selenium Compounds; C088065:lead selenide; D007854:Lead; D012834:Silver; D013691:Tellurium