Template-free synthesis on single-crystalline InP nanotubes

Yin, L. W.; Bando, Y.; Golberg, D.; Li, M. S.
October 2004
Applied Physics Letters;10/25/2004, Vol. 85 Issue 17, p3869
Academic Journal
A simple template-free thermal chemical route has been developed to prepare InP nanotubes with zinc blende structure by controlling the reaction temperature and flowing gas. The synthesized InP nanotubes are single-crystalline, free from defects and dislocations, and partially filled with In. The presence of metallic indium at tips of and within the synthesized InP nanotubes indicated a vapor-liquid-solid mechanism for the formation or InP nanotubes. The synthesized InP single-crystalline nanotubes grew along [110] direction. The synthesized InP nanotubes have a uniform outer diameter of 50-60 nm and a wall thickness of 7-10 nm. The photoluminescence spectrum at room temperature exhibits a great shift from the bulk band gap of 1.35 eV to high energy of 1.49 eV.


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