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<p>Nanowires (NWs) are an advanced technology that provides broadband reflectance across the 300–1100 nm wavelength range, leading to improved light absorbance in crystalline silicon (cSi) solar cells. In this paper, the surface morphology, optical, and electrical properties of silicon nanowires (SiNWs) fabricated using single-step and two-step metal-catalyzed chemical etching (MCCE) processes, using silver (Ag) as a catalyst are characterized. In the single-step MCCE technique, NWs with an average length of approximately 899 nm and a diameter of around 90 nm are produced, while the two-step MCCE approach generates longer NWs, averaging 1084 nm in length and about 95 nm in diameter. The two-step MCCE process generally produces longer and more uniform distribution of NWs when compared to the single-step process. The highest power conversion efficiency (η) of 5.14% is obtained from the solar cell fabricated using the two-step MCCE process with the lowest weighted average reflectance (R<sub>w</sub>) of 7.7% over the wavelength of 300–1100 nm.</p>

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Fabrication and characterization of silicon nanowires by metal-catalyzed chemical etching process

  • 期刊论文

  • 发表日期：

    2025年12月22日

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  • Halo Dalshad Omar

摘要

Nanowires (NWs) are an advanced technology that provides broadband reflectance across the 300–1100 nm wavelength range, leading to improved light absorbance in crystalline silicon (cSi) solar cells. In this paper, the surface morphology, optical, and electrical properties of silicon nanowires (SiNWs) fabricated using single-step and two-step metal-catalyzed chemical etching (MCCE) processes, using silver (Ag) as a catalyst are characterized. In the single-step MCCE technique, NWs with an average length of approximately 899 nm and a diameter of around 90 nm are produced, while the two-step MCCE approach generates longer NWs, averaging 1084 nm in length and about 95 nm in diameter. The two-step MCCE process generally produces longer and more uniform distribution of NWs when compared to the single-step process. The highest power conversion efficiency (η) of 5.14% is obtained from the solar cell fabricated using the two-step MCCE process with the lowest weighted average reflectance (Rw) of 7.7% over the wavelength of 300–1100 nm.