Beilstein J. Nanotechnol.2019,10, 379–388, doi:10.3762/bjnano.10.37
measurements and a band diagram is proposed.
Keywords: functionalization; nanowires; photoluminescence; SnO2; sub-wavelengthwaveguide; Introduction
The development and understanding of one-dimensional (1D) nanowire (NW) sub-wavelength waveguides is a crucial step towards on-chip routing of optical signals
light during the medical process.
Among metal oxides, SnO2 NWs, an n-type direct wide-band semiconductor (Eg = 3.6 eV at 300 K), was proved to be excellent sub-wavelengthwaveguide [3][4][5][6][7][12]. The high refractive index (n = 2.1) of SnO2 allows NWs with an optimal size range (100 to 500 nm) to
commercial application as a gas sensor, transparent conducting electrodes, and catalyst [13][14][15]. SnO2 NSs have been used in several other areas such as sub-wavelengthwaveguide sensors [4], microelectronics [6], Li-ion batteries [16], and lubricants [17]. Oxygen vacancy related defects in SnO2
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Figure 1:
FESEM images of the (a) square-shaped NWs grown at 950 °C, (b) cylindrical- shaped NWs grown at 100...