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<p> <!--Query ID="Q1" Text="Please check and confirm if the authors and their respective affiliations have been correctly identified. Amend if necessary." Resolved="yes"-->In this article, we have demonstrated WO<sub>3</sub>/NiO nanocomposite (NC) based UV photodetector (PD) synthesized using RF sputtering technique. The fabricated WO<sub>3</sub>/NiO NC were porous and crystalline in nature with average diameter of ~ 29.8&#xa0;nm. This fabricated WO<sub>3</sub>/NiO NC photodetector exhibited a low dark current value of 0.32 µA at -1&#xa0;V applied bias. Moreover, the device showed high photo sensitivity (36), and responsivity (2.24&#xa0;mA/W) without any applied bias demonstrating its self-powered application. A high detectivity of 3.82 × <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="339_2025_8272_Article_IEq1.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="29" /> </InlineMediaObject> <EquationSource Format="TEX">\(\:{10}^{10}\)</EquationSource> </InlineEquation> Jones along with low noise equivalent power (NEP) of 88 pW at 0&#xa0;V was obtained under the illumination of UV light. The WO<sub>3</sub>/NiO NC detector also showed fast switching response with rise time of 0.65&#xa0;s and fall time of 0.33&#xa0;s (at 0&#xa0;V) demonstration its application as a low power photodetector.</p>

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WO3/NiO composite nanoparticles as promising material for low power UV-light sensor

  • 期刊论文

  • 发表日期：

    2025年1月27日

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  • Thsurhotho Pojar,
  • Kevileno Kera,
  • Priyanka Chetri,
  • Mritunjay Kumar,
  • Jay Chandra Dhar

摘要

In this article, we have demonstrated WO3/NiO nanocomposite (NC) based UV photodetector (PD) synthesized using RF sputtering technique. The fabricated WO3/NiO NC were porous and crystalline in nature with average diameter of ~ 29.8 nm. This fabricated WO3/NiO NC photodetector exhibited a low dark current value of 0.32 µA at -1 V applied bias. Moreover, the device showed high photo sensitivity (36), and responsivity (2.24 mA/W) without any applied bias demonstrating its self-powered application. A high detectivity of 3.82 × \(\:{10}^{10}\) Jones along with low noise equivalent power (NEP) of 88 pW at 0 V was obtained under the illumination of UV light. The WO3/NiO NC detector also showed fast switching response with rise time of 0.65 s and fall time of 0.33 s (at 0 V) demonstration its application as a low power photodetector.