Kim, J. S. Jeong, J. -H. Park, J. K. Baik, Y. J. Kim, I. H. Seong, T. -Y. Kim, W. M. 2024-01-20T14:34:06Z 2024-01-20T14:34:06Z 2021-09-05 2012-06 0021-8979 https://pubs.kist.re.kr/handle/201004/129212 The optical properties of impurity doped ZnO thin films were analyzed by taking into account the nonparabolicity in the conduction-band and the optically determined carrier concentration and mobility were correlated with those measured by Hall measurement. The Drude parameters obtained by applying a simple Drude model combined with the Lorentz oscillator model for the optical transmittance and reflectance spectrum were analyzed by using the carrier density dependent bare band effective mass determined by the first-order nonparabolicity approximation. The squared plasma energy multiplied by the carrier density dependent effective mass yielded fairly linear relationship with respect to the carrier concentration in wide carrier density range of 10(19)-10(21) cm(-3), verifying the applicability of the nonparabolicity parameter for various types of impurity doped ZnO thin films. The correlation between the optical and Hall analyses was examined by taking the ratios of optical to Hall measurements for carrier density, mobility, and resistivity by introducing a parameter, R-dl, which represents the ratio of the resistances to electron transport from the inside of the lattice and from the crystallographic defects. For both the carrier concentration and mobility, the ratios of optical to Hall measurements were shown to exhibit a monotonically decreasing function of R-dl, indicating that the parameter R-dl could be used as a yardstick in correlating the optically determined carrier density and mobility with those measured by Hall analysis. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729571] English AMER INST PHYSICS Optical analysis of doped ZnO thin films using nonparabolic conduction-band parameters Article 10.1063/1.4729571 1 JOURNAL OF APPLIED PHYSICS, v.111, no.12 JOURNAL OF APPLIED PHYSICS 111 12 N scie scopus 000305832100030 2-s2.0-84863522668 Physics, Applied Physics Article ZINC-OXIDE FILMS STATES EFFECTIVE-MASS SCATTERING PARAMETER TRANSPORT PHENOMENA ELECTRON-TRANSPORT CARRIER TRANSPORT INDIUM OXIDE TRANSPARENT MECHANISM ZnO thin film Optical property Nonparabolicity Effective mass Drude model Plasma frequency Carrier concentration