Characterization of wurtzite Zn1−xMgxO epilayers grown on ScAlMgO4 substrate by methods of optical spectroscopy

Trinkler, L.; Aulika, I.; Krieķe, Guna; Nilova, Dace; Ruska, R.; Butikova, Jeļena; Bērziņa, B.; Chou, Ming-Shean; Chang, Liuwen; Wen, M.C.; Yan, Tao; Nedzinskas, Ramūnas

doi:10.1016/j.jallcom.2022.165178

Cited by 9 publications

(8 citation statements)

References 59 publications

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“…Meanwhile, the high external pressure shrinks the lattice constants for both the a and c axes. [48] and WZ ZMO epilayers [4], respectively. The black line is the fitted result of E g ranging from x = 0.22 to 0.87 according to RS Mg 1−x Zn x O = 4.17 + 2.58(1 − x) eV [19].…”

Section: Structural Properties and E G For Rs Mgmentioning

confidence: 99%

“…Zinc oxide (ZnO) is one of the most promising metal oxide materials in the industry and other engineering fields for optical utilization based on its sensing [1], antibacterial [2] and water-splitting [3] properties. The synthesis of ZnO structures by a variety of chemical and physical processes has been studied [4]. From the viewpoint of the optical spectrum, the band gap (E g ) of ZnO is approximately from 3.3 to 3.4 eV, which allows for optical applications in the ultraviolet range [5].…”

Section: Introductionmentioning

confidence: 99%

“…The nanocomposites or alloys of MgO and ZnO (ZMO) facilitate E g engineering, including photosensors, photocatalysts, photodetectors and solar cell devices [15][16][17][18], to achieve the properties of a wide optical response range from 3.3 to 7.8 eV [4,19]. Under ambient conditions, MgO has rocksalt (RS) crystal structures, and ZnO has those of wurzite (WZ).…”

Section: Introductionmentioning

confidence: 99%

“…Under ambient conditions, MgO has rocksalt (RS) crystal structures, and ZnO has those of wurzite (WZ). With the development of synthesis, RS Mg 1−x Zn x O and WZ Zn 1−x Mg x O have been produced in recent years [4,[19][20][21][22][23][24]. In addition, both controlling the concentration of ZMO and applying external pressure have led to E g engineering.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Stress on Electronic and Optical Properties of Rocksalt and Wurtzite MgO–ZnO Nanocomposites with Varying Concentrations of Magnesium and Zinc

et al. 2022

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The structural, electronic and optical properties of stressed MgO–ZnO nanocomposite alloys with concentrations of Zn and Mg varying from 0.125 to 0.875 were studied using ab initio simulations. Two crystal structures are considered for the initial MgO–ZnO alloys: the rocksalt Mg\({_\text{1-x}}\)Zn\({_\text{x}}\)O and wurtzite Zn\({_\text{1-x}}\)Mg\({_\text{x}}\)O phases. For rocksalt Mg\({_\text{1-x}}\)Zn\({_\text{x}}\)O, the optimized structures are stable at pressures below 10 GPa. The larger the Mg concentration and pressure, the wider the \({E_{g}}\) of the rocksalt phase. In contrast, the optimal geometries of wurtzite Zn\({_\text{1-x}}\)Mg\({_\text{x}}\)O reveal a diversity of possibilities, including rocksalt, wurtzite and mixed phases. These effects lead to the fact that the optical properties of wurtzite Zn\({_\text{1-x}}\)Mg\({_\text{x}}\)O not only demonstrate the properties of the wurtzite phase but also indicate the optical features of the rocksalt phase. In addition, mixed phases of Zn\({_\text{1-x}}\)Mg\({_\text{x}}\)O simultaneously provide the characteristics of both wurtzite and rocksalt phases with the same structures in different dielectric matrices.

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Section: Structural Properties and E G For Rs Mgmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of Stress on Electronic and Optical Properties of Rocksalt and Wurtzite MgO–ZnO Nanocomposites with Varying Concentrations of Magnesium and Zinc

et al. 2022

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“…The recent discovery of giant Rydberg excitons [ 7 , 8 ]—large optical nonlinearities with ultra-strong mutual interactions and high sensitivity to external fields—has opened prospects for new applications in quantum sensing and nonlinear optics at the single-photon level. Another practical application of Cu 2 O single crystal wafer could be a substrate for growing ZnO-MgO epilayers [ 9 ] due to the low lattice mismatch (lattice constant 0.427 nm of Cu 2 O versus 0.421–0.426 nm for ZnO-MgO).…”

Section: Introductionmentioning

confidence: 99%

Luminescence Properties of Epitaxial Cu2O Thin Films Electrodeposited on Metallic Substrates and Cu2O Single Crystals

et al. 2023

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The luminescent properties of epitaxial Cu2O thin films were studied in 10–300 K temperature range and compared with the luminescent properties of Cu2O single crystals. Cu2O thin films were deposited epitaxially via the electrodeposition method on either Cu or Ag substrates at different processing parameters, which determined the epitaxial orientation relationships. Cu2O (100) and (111) single crystal samples were cut from a crystal rod grown using the floating zone method. Luminescence spectra of thin films contain the same emission bands as single crystals around 720, 810 and 910 nm, characterizing VO2+, VO+ and VCu defects, correspondingly. Additional emission bands, whose origin is under discussion, are observed around 650–680 nm, while the exciton features are negligibly small. The relative mutual contribution of the emission bands varies depending on the thin film sample. The existence of the domains of crystallites with different orientations determines the polarization of luminescence. The PL of both Cu2O thin films and single crystals is characterized by negative thermal quenching in the low-temperature region; the reason of this phenomenon is discussed.

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Compliant substrate epitaxial MgZnO films using fluorphlogopite mica approaching homoepitaxy quality

Chen,

Wang,

Wang

et al. 2024

Applied Surface Science

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Characterization of wurtzite Zn1−xMgxO epilayers grown on ScAlMgO4 substrate by methods of optical spectroscopy

Cited by 9 publications

References 59 publications

Influence of Stress on Electronic and Optical Properties of Rocksalt and Wurtzite MgO–ZnO Nanocomposites with Varying Concentrations of Magnesium and Zinc

Influence of Stress on Electronic and Optical Properties of Rocksalt and Wurtzite MgO–ZnO Nanocomposites with Varying Concentrations of Magnesium and Zinc

Luminescence Properties of Epitaxial Cu2O Thin Films Electrodeposited on Metallic Substrates and Cu2O Single Crystals

Compliant substrate epitaxial MgZnO films using fluorphlogopite mica approaching homoepitaxy quality

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