نتایج جستجو برای: gallium arsenide
تعداد نتایج: 16417 فیلتر نتایج به سال:
Although semiconductors such as silicon (Si), gallium arsenide (GaAs), and gallium phosphide (GaP) have band gaps that make them efficient photoanodes for solar fuel production, these materials are unstable in aqueous media. We show that TiO2 coatings (4 to 143 nanometers thick) grown by atomic layer deposition prevent corrosion, have electronic defects that promote hole conduction, and are suf...
The surface roughness of gallium arsenide ~001! films produced by metalorganic vapor-phase epitaxy has been studied as a function of temperature and growth rate by in situ scanning tunneling microscopy. Height–height correlation analysis reveals that the root-mean-height difference follows a power-law dependence on lateral separation, i.e., G(L)5kL, up to a critical distance Lc , after which it...
Free of tool wear, residual stress, and surface damage, electrochemistry plays a significant role in precision machining. We report here semiconductor polishing technique based on electrochemically induced chemical etching, which the concentration distribution electrogenerated etchant between electrode workpiece can be precisely controlled by pulse frequency potential applied to electrode. A th...
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