Abstract
Two different semiconducting bismuth sulfide (Bi 2S 3) nanostructures (feather-like Bi 2S 3 nanotubes and fiber-like Bi 2S 3 nanotubes) with diameters around 50–60 nm and lengths about tens of micrometers were prepared successfully by a chemical lithography route. The results indicated that the employment of polyvinylpyrrolidone led to the precursor with feather-like morphology and the acid had ripening effect on and etching action to the ultimate formation of the fiber-like Bi 2S 3 nanotubes. The photoluminescence spectra of two different Bi 2S 3 nanostructures revealed that the relative position of emission peaks was influenced by the thin edges of the feather-like nanotubes due to the quantum-confinement effect.
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