Abstract
PbS nanobelts and nanowires were successfully synthesized through acarbothermal reduction/sulfidation method, in which a powder mixture of sulfur,PbCl2 and active carbonwas heated to 600 °C under ambient pressure. Structural characterizations show that the one-dimensional nanostructures growwith a [110] orientation. The nanobelts do not have any crystal defects but thenanowires have deformations, dislocations and grain boundaries, includingΣ17 [001] tilt grain boundaries,Σ17 [001] symmetric grainboundaries and Σ5 [001] tilt grain boundaries. According to coincidence site lattice theory, the models for the fitted atoms inΣ17 [001] tilt grainboundaries and Σ17 [001] symmetric grain boundaries are established. The growth mechanism has also beendiscussed. This first report on PbS microstructures, especially on defects, might bebeneficial in studying their synthesis, characterization and applications in the nearfuture.
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