The role of synthesizing time on the optoelectronic properties of TiO2-ZnO nanocomposite on PTFE substrate fabricated by the chemical bath deposition method

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2024-11-13 DOI:10.1016/j.physb.2024.416734

Youssif S.M. Elzawiei , Md Roslan Hashim , Abdullah Abdulhameed , Mohd Mahadi Halim

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Abstract

ZnO-based ultraviolet photodetectors have been employed in advanced applications, including environmental monitoring, space exploration, and secured optical communication. In this work, TiO₂-ZnO nanocomposite that included Ti-doped ZnO nanorods was synthesized using chemical bath deposition method at 96 °C on PTFE substrates for ultraviolet photodetectors. ZnO nanorods grew for 3 h, followed immediately by the synthesis of TiO₂ for 2 h. The characterizations revealed several distinguished structural, optical, and electrical properties compared with reference ZnO-only samples deposited for 3 h and 5 h respectively. The indirect band gap of the produced nanocomposite was 3.09 eV. The fabricated ultraviolet photodetector revealed outstanding results: a responsivity of 673.667 mA/W, a detectivity of 5.121 × 10⁸ Jones, and an external quantum efficiency of 229.44 %. The results showed the potential of the nanocomposite for photodetector applications on flexible substrate.

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化学沉积法在聚四氟乙烯基底上制备的 TiO2-ZnO 纳米复合材料的合成时间对其光电特性的影响

基于氧化锌的紫外线光电探测器已被应用于环境监测、太空探索和安全光通信等先进领域。在这项工作中，采用化学沉积法在 96 °C 下在聚四氟乙烯基底上合成了 TiO2-ZnO 纳米复合材料，其中包括掺杂了钛的 ZnO 纳米棒，用于紫外光检测器。与分别沉积了 3 小时和 5 小时的纯 ZnO 参考样品相比，该复合材料在结构、光学和电学特性方面均有不同。所制备纳米复合材料的间接带隙为 3.09 eV。所制备的紫外光探测器显示出优异的结果：响应率为 673.667 mA/W，检测率为 5.121 × 108 Jones，外部量子效率为 229.44 %。结果表明，这种纳米复合材料具有在柔性基底上应用光电探测器的潜力。

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来源期刊

Physica B-condensed Matter 物理-物理：凝聚态物理

CiteScore

4.90

自引率

7.10%

发文量

703

审稿时长

44 days

期刊介绍： Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces