Synthesis of GaAs nanowires with very small diameters and their optical properties with the radial quantum-confinement effect

Guoqiang Zhang; Tateno, Kouta; Sanada, Haruki; Tawara, Takehiko; Gotoh, Hideki; Nakano, Hidetoshi
September 2009
Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p123104
Academic Journal
We report the synthesis and optical properties of GaAs nanowires with very small diameters. We grew the GaAs nanowires by using size-selective gold particles with nominal diameters of 5, 10, 20, 40, and 60 nm. The diameter-controlled nanowires enable us to observe blueshifts of the free exitononic emission peak from individual nanowires with decreasing gold-particle size due to the two-dimensional radial quantum-confinement effect. We also analyze the absorption and emission polarization anisotropies of these bare GaAs quantum nanowires.


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