Synchronously
Deriving Electron Concentration and
Mobility by Temperature- and Oxygen-Dependent Conductivity of Porous
ZnO Nanocrystalline Film
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Abstract
A simple and effective way to get
electron concentration and mobility
accurately is significant for the electronic and photoelectric applications
of porous ZnO nanocrystalline film. On the basis of the defect ionization
and the electron scattering, we proposed here a new temperature-programmed-dependent
conductivity-based synchronous derivation method (TPDCBSD) to evaluate
electron concentration and mobility of porous ZnO nanocrystalline
film independently. The obtained results were consistent with others.
Compared with the commonly used Hall-effect measurements, the TPDCBSD
method is much more simple, has lower noise, and is convenient to
couple external fields. More importantly, the extracted electron concentration
and electron mobility are relatively independent. Besides, a series
of physical parameters related to the effects of temperature and oxygen
partial pressure were obtained, and the coupling effect of temperature
and oxygen was discussed in this work, which are inspiring for the
applications of porous ZnO nanocrystalline film