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Controllable Hydrothermal Synthesis of 1D β-Ga 2 O 3 for Solar-Blind Ultraviolet Photodetection.

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Title: Controllable Hydrothermal Synthesis of 1D β-Ga 2 O 3 for Solar-Blind Ultraviolet Photodetection.
Authors: Mao, Lingfeng1 (AUTHOR), Wang, Xiaoxuan1,2 (AUTHOR), Huang, Chaoyang1 (AUTHOR), Ma, Yi1,2 (AUTHOR), Qin, Feifei2 (AUTHOR), Lu, Wendong1 (AUTHOR), Zhu, Gangyi2 (AUTHOR), Shi, Zengliang1 (AUTHOR), Cui, Qiannan1 (AUTHOR), Xu, Chunxiang1 (AUTHOR)
Source: Nanomaterials (2079-4991). Mar2025, Vol. 15 Issue 5, p402. 14p.
Subjects: Nanorod synthesis, Optoelectronic devices, Hydrothermal synthesis, Light absorption, Nanorods
Abstract: Gallium oxide (Ga2O3), an ultrawide bandgap semiconductor, is an ideal material for solar-blind photodetectors, but challenges such as low responsivity and response speed persist. In this paper, one-dimensional (1D) Ga2O3 nanorods were designed to achieve high photodetection performance due to their effective light absorption and light field confinement. Through modulating source concentration, pH value, temperature, and reaction time, 1D β-Ga2O3 nanorods were controllably fabricated using a cost-effective hydrothermal method, followed by post-annealing. The nanorods had a diameter of ~500 nm, length from 0.5 to 3 μm, and structure from nanorods to spindles, indicating that different β-Ga2O3 nanorods can be utilized controllably through tuning reaction parameters. The 1D β-Ga2O3 nanorods with a high length-to-diameter ratio were chosen to construct metal-semiconductor-metal type photodetectors. These devices exhibited a high responsivity of 8.0 × 10−4 A/W and detectivity of 4.58 × 109 Jones under 254 nm light irradiation. The findings highlighted the potential of 1D Ga2O3 nanostructures for high-performance solar-blind ultraviolet photodetectors, paving the way for future integrable deep ultraviolet optoelectronic devices. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Controllable Hydrothermal Synthesis of 1D β-Ga 2 O 3 for Solar-Blind Ultraviolet Photodetection.
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Mar2025, Vol. 15 Issue 5, p402. 14p.
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– Name: Abstract
  Label: Abstract
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  Data: Gallium oxide (Ga2O3), an ultrawide bandgap semiconductor, is an ideal material for solar-blind photodetectors, but challenges such as low responsivity and response speed persist. In this paper, one-dimensional (1D) Ga2O3 nanorods were designed to achieve high photodetection performance due to their effective light absorption and light field confinement. Through modulating source concentration, pH value, temperature, and reaction time, 1D β-Ga2O3 nanorods were controllably fabricated using a cost-effective hydrothermal method, followed by post-annealing. The nanorods had a diameter of ~500 nm, length from 0.5 to 3 μm, and structure from nanorods to spindles, indicating that different β-Ga2O3 nanorods can be utilized controllably through tuning reaction parameters. The 1D β-Ga2O3 nanorods with a high length-to-diameter ratio were chosen to construct metal-semiconductor-metal type photodetectors. These devices exhibited a high responsivity of 8.0 × 10−4 A/W and detectivity of 4.58 × 109 Jones under 254 nm light irradiation. The findings highlighted the potential of 1D Ga2O3 nanostructures for high-performance solar-blind ultraviolet photodetectors, paving the way for future integrable deep ultraviolet optoelectronic devices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/nano15050402
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        Text: English
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        PageCount: 14
        StartPage: 402
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      – SubjectFull: Nanorod synthesis
        Type: general
      – SubjectFull: Optoelectronic devices
        Type: general
      – SubjectFull: Hydrothermal synthesis
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      – SubjectFull: Light absorption
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      – SubjectFull: Nanorods
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    Titles:
      – TitleFull: Controllable Hydrothermal Synthesis of 1D β-Ga 2 O 3 for Solar-Blind Ultraviolet Photodetection.
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            NameFull: Mao, Lingfeng
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            – D: 01
              M: 03
              Text: Mar2025
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