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J Am Chem Soc. 2010 Sep 8;132(35):12174-5. doi: 10.1021/ja1037963.

Preparation and periodic emission of superlattice CdS/CdS:SnS2 microwires.

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  • 1School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.


Semiconductor superlattice micro-/nanowires could greatly increase the versatility and power of modulating electronic (or excitonic, photonic) transport, optical properties. In this communication, we report growth of a semiconductor CdS/CdS:SnS(2) superlattice microwire through a coevaporation technique with microenvironmental control. Such a novel superlattice microwire can modulate the exciton and photons to show multipeak emissions with periods in a wide spectral range, which arise in the 1-d photon crystal and confined exciton emission. This system can be widely used in producing multicolor emissions, low-threshold lasing, study light-matter interaction, slow light engineering, and weak nonlinear optical devices.

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