Transition between grain boundary and intragrain scattering transport mechanisms in boron-doped zinc oxide thin films

A comprehensive model for the electronic transport in polycrystalline ZnO:B thin films grown by low pressure chemical vapor deposition is presented. The optical mobilities and carrier concentration calculated from reflectance spectra using the Drude model were compared with the data obtained by Hall measurements. By analyzing the results for samples with large variation of grain size and doping level, the respective influences on the transport of potential barriers at grain boundaries and intragrain scattering could be separated unambiguously. A continuous transition from grain boundary scattering to intragrain scattering is observed for doping level increasing from 3× 1019 to 2× 1020 cm-3. © 2007 American Institute of Physics.


Published in:
APPLIED PHYSICS LETTERS, 90, -142107
Year:
2007
Note:
IMT-NE Number: 452
Laboratories:


Note: The status of this file is: Involved Laboratories Only


 Record created 2009-02-10, last modified 2018-09-13

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