Scholarlink

<p>In this study, a high-performance self-powered ultraviolet photodetector (UV PD) is demonstrated, which is fabricated through straightforward hydrothermal and electrochemical deposition techniques. The device features a p–n heterojunction structure composed of ZnO nanorods (NRs) as the <i>n</i>-type bottom layer, poly(3,4-ethylenedioxyselenophene) (PEDOS) as the <i>p</i>-type top layer, and copper oxide (CuO) nanoparticles (NPs) incorporated as a key intermediate layer. Under weak UV irradiation (365&#xa0;nm, 0.32&#xa0;mW/cm<sup>2</sup>), the fabricated UV PD delivers outstanding self-powered performance, attaining a responsivity of 0.185&#xa0;μA/W and a detectivity of 3.58 × 10⁹ Jones. The CuO NPs insertion layer is verified as the key contributor to device performance enhancement: the UV PD with the CuO NPs interlayer exhibits a responsivity higher than that of the device without the interlayer. This performance boost is attributed to the CuO NPs’ ability to optimize heterojunction quality-specifically; it facilitates carrier generation, transport, and separation while extending carrier lifetime, thus substantially enhancing the responsivity of the CuO NPs/ZnO/PEDOS self-powered UV PD. Additionally, the fabricated self-powered UV PD exhibits excellent multi-cycle stability and robust detection performance under different light intensities. With its high efficiency and low-cost fabrication process, this self-powered UV PD exhibits great potential for practical applications in UV sensing systems.</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

Enhanced charge separation in self-powered UV photodetectors via a solution-processed CuO nanoparticle interlayer at the PEDOS/ZnO heterojunction

  • 期刊论文

  • 发表日期：

    2026年4月4日

查看全文
  • Aygul Kadir,
  • Yan Li,
  • Ali Ahmant,
  • Yin Yan,
  • Xiaoyu Dong

摘要

In this study, a high-performance self-powered ultraviolet photodetector (UV PD) is demonstrated, which is fabricated through straightforward hydrothermal and electrochemical deposition techniques. The device features a p–n heterojunction structure composed of ZnO nanorods (NRs) as the n-type bottom layer, poly(3,4-ethylenedioxyselenophene) (PEDOS) as the p-type top layer, and copper oxide (CuO) nanoparticles (NPs) incorporated as a key intermediate layer. Under weak UV irradiation (365 nm, 0.32 mW/cm2), the fabricated UV PD delivers outstanding self-powered performance, attaining a responsivity of 0.185 μA/W and a detectivity of 3.58 × 10⁹ Jones. The CuO NPs insertion layer is verified as the key contributor to device performance enhancement: the UV PD with the CuO NPs interlayer exhibits a responsivity higher than that of the device without the interlayer. This performance boost is attributed to the CuO NPs’ ability to optimize heterojunction quality-specifically; it facilitates carrier generation, transport, and separation while extending carrier lifetime, thus substantially enhancing the responsivity of the CuO NPs/ZnO/PEDOS self-powered UV PD. Additionally, the fabricated self-powered UV PD exhibits excellent multi-cycle stability and robust detection performance under different light intensities. With its high efficiency and low-cost fabrication process, this self-powered UV PD exhibits great potential for practical applications in UV sensing systems.