S-Space College of Natural Sciences (자연과학대학) Dept. of Physics and Astronomy (물리·천문학부) Physics (물리학전공) Journal Papers (저널논문_물리학전공)
Synthesis of Single-Crystal CdS Microbelts Using a Modified Thermal Evaporation Method and Their Photoluminescence
- Shen, Guozhen; Cho, Jung Hee; Yoo, Jin Kyoung; Yi, Gyu-Chul; Lee, Cheol Jin
- Issue Date
- American Chemical Society
- J. Phys. Chem. B, 2005, 109(19), pp 9294–9298
- SEMICONDUCTING OXIDES; NITRIDE NANOBELTS; CATALYTIC GROWTH; LARGE-SCALE; NANOWIRES; NANORIBBONS; ROUTE; FABRICATION; NANOTUBES; NANOROD
- Large-scale synthesis of single-crystal CdS microbelts was achieved by a modified thermal evaporation method, in which an adiabatic layer was used to provide abrupt temperature decrease and high gas concentration for the microbelt growth. The synthesized CdS microbelts were usually several micrometers in width, 70 nm in thickness, and tens to several hundred micrometers in length. Studies found that the adiabatic layer has great influence on the formation of CdS microbelts. Room-temperature photoluminescence indicated the disappearance of the emission at 1.77 eV, the appearance of an emission at 2.07 eV, and also the enhancement of the emission band at 2.38 eV, whose position shifted toward the blue region compared with conventional narrow CdS nanobelts. A possible growth mechanism of the CdS microbelts was briefly discussed.
- 1520-6106 (print)
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