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<p>PBA@ZnO and PBA@CdO nanohybrids were prepared by a straightforward chemical co-precipitation approach, and their structural, chemical composition, and surface morphological architecture were identified by XRD, EDX, SEM, TEM, and AFM techniques. The PBA@CdO exhibited nanofiber structure with large specific surface area compared to PBA@ZnO nanospheres. The hybrid thin films revealed optical absorption within the UV–Vis spectrum characterized by dual energy gap. The electronic properties of PBA@CdO/p-Si Schottky diode demonstrated high rectification ratio <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\left( {{\text{RR}}} \right)\sim \,1744\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mfenced close=")" open="("> <mtext>RR</mtext> </mfenced> <mo>∼</mo> <mspace width="0.166667em" /> <mn>1744</mn> </mrow> </math></EquationSource> </InlineEquation> and low series resistance in the range of 900 <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\({\Omega }\)</EquationSource> <EquationSource Format="MATHML"><math> <mi mathvariant="normal">Ω</mi> </math></EquationSource> </InlineEquation> to 1kΩ. In addition to that, the fiber device displayed excellent responsivity and external quantum efficiency than PBA@ZnO/p-Si. The <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\left( {{\text{C}} - {\text{V}}} \right){ }\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mfenced close=")" open="("> <mrow> <mtext>C</mtext> <mo>-</mo> <mtext>V</mtext> </mrow> </mfenced> <mrow /> </mrow> </math></EquationSource> </InlineEquation> measurements demonstrated the significant impact of CdO impurities on improving charge carrier density at the interfacial states leading to highly efficient photodiode.</p>

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Comparative study of PBA@ZnO nanospheres and PBA@CdO nanofibers synthesized via a facile chemical co-precipitation route for enhanced Schottky photodiode performance

  • 期刊论文

  • 发表日期：

    2026年3月8日

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  • Miad Ali Siddiq,
  • Rageh K. Hussein,
  • Elsayed Elgazzar

摘要

PBA@ZnO and PBA@CdO nanohybrids were prepared by a straightforward chemical co-precipitation approach, and their structural, chemical composition, and surface morphological architecture were identified by XRD, EDX, SEM, TEM, and AFM techniques. The PBA@CdO exhibited nanofiber structure with large specific surface area compared to PBA@ZnO nanospheres. The hybrid thin films revealed optical absorption within the UV–Vis spectrum characterized by dual energy gap. The electronic properties of PBA@CdO/p-Si Schottky diode demonstrated high rectification ratio \(\left( {{\text{RR}}} \right)\sim \,1744\) RR ∼ 1744 and low series resistance in the range of 900 \({\Omega }\) Ω to 1kΩ. In addition to that, the fiber device displayed excellent responsivity and external quantum efficiency than PBA@ZnO/p-Si. The \(\left( {{\text{C}} - {\text{V}}} \right){ }\) C - V measurements demonstrated the significant impact of CdO impurities on improving charge carrier density at the interfacial states leading to highly efficient photodiode.