Abstract:Undoped and C-doped n-type β-FeSi2 thin films were epitaxially grown on p-type Si substrates by sputtering and their heterojunction diode performances were experimentally studied. The near-infrared photodetection, at a wavelength of 1.3 m, in these heterojunction diodes was clearly improved as compared to the heterojunctions comprising undoped-β-FeSi2. From X-ray diffraction and Raman spectroscopic measurements, there were no evident structural differences between the undoped and C-doped films. C-doping hardl… Show more
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