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Abstract:
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P was doped into ZnO in two forms: ceramics; and nano-wires fabricated by thermal evaporation technique.
When P concentration is below 6%, the compounds could be p-type with the hole concentration
is of about 1018/cm3. However, this property could be lost after few weeks due to aging effect. When
the P concentration is above 9%, peaks of P appear clearly in the X-ray spectra, and simultaneously, the
compounds are found to be n-type. The size of grains in ceramic samples strongly depends on deposition
conditions. As for wires, changing the substrate temperature and the pressure of gas flow could vary the
size. The smallest size of P-doped ZnO wires that could be obtained is about 10nm for the composition
of doping with 3% of P. |