Please use this identifier to cite or link to this item:
|Title:||Determination of carrier concentration dependent electron effective mass and scattering time of n-ZnO thin film by terahertz time domain spectroscopy||Authors:||Tang, J.
|Issue Date:||2014||Citation:||Tang, J., Deng, L.Y., Tay, C.B., Zhang, X.H., Chai, J.W., Qin, H., Liu, H.W., Venkatesan, T., Chua, S.J. (2014). Determination of carrier concentration dependent electron effective mass and scattering time of n-ZnO thin film by terahertz time domain spectroscopy. Journal of Applied Physics 115 (3) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4861421||Abstract:||We demonstrated a novel and widely accessible method for determining the electron effective mass and scattering time of ZnO films with different carrier concentrations by combining terahertz time-domain spectroscopy with Hall measurement. The terahertz time domain spectroscopy (THz-TDS) transmission spectra (0.1-2THz) were well described by Drude model. It is found that electron effective mass varied from 0.23m0 to 0.26m0 as the electron concentration changes from 5.9 × 1017 cm-3 to 4.0 × 1019 cm-3. The carrier concentration dependent characteristic is ascribed to the non-parabolicity of conduction band. Free carrier localization mechanism explained the discrepancy in mobilities obtained from THz-TDS and Hall measurements. © 2014 AIP Publishing LLC.||Source Title:||Journal of Applied Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/82139||ISSN:||00218979||DOI:||10.1063/1.4861421|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 22, 2019
WEB OF SCIENCETM
checked on Jul 15, 2019
checked on Jul 20, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.