Scholarlink

<p>In this study, transparent dielectric magnesium oxide (MgO) thin films doped with varying concentrations of zinc (Zn) (0, 3, 5, and 7&#xa0;at %) are successfully deposited on glass substrates using sol–gel dip coating technique. Magnesium acetate and zinc acetate serve as precursors, and the films were annealed at 500&#xa0;°C for 6&#xa0;h. The effect of Zn doping on the optical, morphological, and nonlinear optical (NLO) properties of the films is systematically investigated. Optical transmittance measurements reveal high transparency (&gt; 80%) in the visible region, with transmittance decreasing as Zn concentration increases. The optical bandgap ranges from 3.94 to 4.04&#xa0;eV, following a nonlinear trend due to Zn-induced lattice modifications. Surface morphology analysis shows uniform, homogeneous, and dense films, with increasing grain size and surface roughness at higher Zn doping levels. Third harmonic generation (THG) measurements using a Nd:YAG laser (1064&#xa0;nm) demonstrate high-quality films with enhanced NLO properties. The third-order NLO susceptibility (χ<sup>(3)</sup>) is highest for undoped MgO (48.98 · 10<sup>−22</sup>&#xa0;m<sup>2</sup>&#xa0;V<sup>−2</sup>), while Zn doping results in an initial reduction followed by improvement at higher concentrations. These findings highlight the potential of Zn-doped MgO thin films for optical and NLO applications.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Zinc doping-induced modulation of optical and nonlinear optical properties in MgO thin films deposited by dip coating

  • 期刊论文

  • 发表日期：

    2025年4月24日

查看全文
  • S. Abed,
  • K. Waszkowska,
  • H. Djaaboube,
  • A. Bouabellou,
  • S. Taboukhat,
  • B. Sahraoui,
  • K. Bouchouit

摘要

In this study, transparent dielectric magnesium oxide (MgO) thin films doped with varying concentrations of zinc (Zn) (0, 3, 5, and 7 at %) are successfully deposited on glass substrates using sol–gel dip coating technique. Magnesium acetate and zinc acetate serve as precursors, and the films were annealed at 500 °C for 6 h. The effect of Zn doping on the optical, morphological, and nonlinear optical (NLO) properties of the films is systematically investigated. Optical transmittance measurements reveal high transparency (> 80%) in the visible region, with transmittance decreasing as Zn concentration increases. The optical bandgap ranges from 3.94 to 4.04 eV, following a nonlinear trend due to Zn-induced lattice modifications. Surface morphology analysis shows uniform, homogeneous, and dense films, with increasing grain size and surface roughness at higher Zn doping levels. Third harmonic generation (THG) measurements using a Nd:YAG laser (1064 nm) demonstrate high-quality films with enhanced NLO properties. The third-order NLO susceptibility (χ(3)) is highest for undoped MgO (48.98 · 10−22 m2 V−2), while Zn doping results in an initial reduction followed by improvement at higher concentrations. These findings highlight the potential of Zn-doped MgO thin films for optical and NLO applications.

Graphical Abstract