Effect of magnesium content and growth temperature on structural and optical properties of USCVD-grown MgZnO films

Kutlu-Narin, E.; Narin, P.; Yıldız, Abdullah; Li̇şesi̇vdi̇n, S. B.

doi:10.1007/s00339-021-04507-8

Cited by 5 publications

(5 citation statements)

References 30 publications

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“…Within the resulting large error bars on the bowing parameter, this parameter agrees with the deduced theoretical value [41]. Our results for the best fitting relationship between E g and x lie within the range of those of Wang et al, Zhang et al, and Kutlu-Narin et al, who fabricated MZO thin films in low temperature co-sputtering and ultrasonic spray processes [29,37,40]. The differences among the various studies may be attributed to the influence exerted on the bandgap by film properties other than composition such as the film density, crystallinity, stress, and the concentration of n-type defects.…”

Section: Energy Dispersive X-ray Spectroscopy (Eds)supporting

confidence: 89%

“…Experimental results are presented in Figure 3 from Refs. [16] and [40] as well, and theoretical results are presented from Ref. [41] including the bowing effect but shifted by a constant energy to match the 3.26 eV bandgap of ZnO.…”

Section: Energy Dispersive X-ray Spectroscopy (Eds)mentioning

confidence: 99%

“…In this study in fact, the power applied to the MgO target is a factor of 2.5 times the power applied to the ZnO target to reach x = 0.42. [16] (triangles) and [40] (circles) and a theoretical result from Ref. [41] incorporating a bowing parameter (black line) are also shown.…”

Section: Energy Dispersive X-ray Spectroscopy (Eds)mentioning

confidence: 99%

“…For sputtered samples, differences in these properties may result from differences in target power levels, gas pressure, and substrate temperature. [16] (triangles) and [40] (circles) and a theoretical result from Ref. [41] incorporating a bowing parameter (black line) are also shown.…”

Section: Energy Dispersive X-ray Spectroscopy (Eds)mentioning

confidence: 99%

“…Experimental data from Refs [16]. (triangles) and[40] (circles) and a theoretical result from Ref [41]. incorporating a bowing parameter (black line) are also shown.…”

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confidence: 99%

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Optical Properties of Magnesium-Zinc Oxide for Thin Film Photovoltaics

et al. 2021

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Motivated by their utility in CdTe-based thin film photovoltaics (PV) devices, an investigation of thin films of the magnesium-zinc oxide (MgxZn1−xO or MZO) alloy system was undertaken applying spectroscopic ellipsometry (SE). Dominant wurtzite phase MZO thin films with Mg contents in the range 0 ≤ x ≤ 0.42 were deposited on room temperature soda lime glass (SLG) substrates by magnetron co-sputtering of MgO and ZnO targets followed by annealing. The complex dielectric functions ε of these films were determined and parameterized over the photon energy range from 0.73 to 6.5 eV using an analytical model consisting of two critical point (CP) oscillators. The CP parameters in this model are expressed as polynomial functions of the best fitting lowest CP energy or bandgap E0 = Eg, which in turn is a quadratic function of x. As functions of x, both the lowest energy CP broadening and the Urbach parameter show minima for x ~ 0.3, which corresponds to a bandgap of 3.65 eV. As a result, it is concluded that for this composition and bandgap, the MZO exhibits either a minimum concentration of defects in the bulk of the crystallites or a maximum in the grain size, an observation consistent with measured X-ray diffraction line broadenings. The parametric expression for ε developed here is expected to be useful in future mapping and through-the-glass SE analyses of partial and complete PV device structures incorporating MZO.

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Section: Energy Dispersive X-ray Spectroscopy (Eds)supporting

confidence: 89%

Section: Energy Dispersive X-ray Spectroscopy (Eds)mentioning

confidence: 99%

Section: Energy Dispersive X-ray Spectroscopy (Eds)mentioning

confidence: 99%

Section: Energy Dispersive X-ray Spectroscopy (Eds)mentioning

confidence: 99%

“…Experimental data from Refs [16]. (triangles) and[40] (circles) and a theoretical result from Ref [41]. incorporating a bowing parameter (black line) are also shown.…”

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