Preparation and periodic emission of superlattice CdS/CdS:SnS2 microwires.
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.
Dai
Guozhang
G
School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
Zou
Bingsuo
B
Wang
Zhonglin
Z
D019187:Cadmium Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D053770:Nanowires / Q000737:chemistry*; D010316:Particle Size; D012666:Semiconductors; D013440:Sulfides / Q000138:chemical synthesis* / Q000737:chemistry; D013499:Surface Properties; D017971:Tin Compounds / Q000138:chemical synthesis* / Q000737:chemistry
D019187:Cadmium Compounds; D013440:Sulfides; D017971:Tin Compounds; C034939:cadmium sulfide; C078041:tin sulfide