Abstract
Abstract A microcrystalline PbS phase has been thermally produced from an oxide glass host. X-ray linewidth measurements have shown that the average particle size can be controlled in the range 8–30 nm, depending on the thermal development schedule. Quantum confinement behavior has been observed based on the measurement of sub-band structure of the absorption edge. Spectral shifts of the sub-bands were found to be consistent with the inverse square of the particle size, consistent with a quantum confinement origin. A lower-concentration PbSe phase has also been obtained from the same base-glass composition showing similar optical effects.
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