Optical and Morphological Characteristic of ZnO:Al/SiO2 Nanorods for Enhanced Light Absorption in Dye-Sensitized Solar Cells Application

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Puji Nurrahmawati, Rangga Agung Pribadi Heriawan, Adam Rasyid Sidiqi, Nevi Faradina, Ranny Febrianali, Ali Basrah Pulungan, Krismadinata, Iwantono, Suratun Nafisah, Marlia Morsin

2026 IOP Conference Series: Earth and Environmental Science Vol. 1598 Issue 1 Conference paper Cited by 0

Abstract

This study investigates the optical and morphological characteristics of ZnO, Al-doped ZnO (ZA), and ZnO:Al-SiO2 (ZAS) nanorods prepared using a hydrothermal method. The incorporation of SiO2 aims to enhance light absorption and surface properties, with potential relevance to dye-sensitized solar cell (DSSC) photoanode materials. UV-Vis spectroscopy showed a slight decrease in band gap with Al doping, while the addition of SiO2 improved the overall absorbance. FESEM analysis revealed that the ZAS sample had a more compact and uniform morphology. These results suggest that the combined effects of Al doping and SiO2 compositing can enhance the structural and optical properties of ZnO nanorods, making them promising candidates for future application in DSSC devices. © Published under licence by IOP Publishing Ltd.

Affiliations

Department of Electrical Engineering, Universitas Negeri Padang, Padang, Indonesia; Department of Mining Engineering, Universitas Negeri Padang, Padang, Indonesia; Department of Physics, Universitas Riau, Pekanbaru, Indonesia; Department of Electrical Engineering, Institute Technology of Sumatera (ITERA), Lampung Selatan, Indonesia; Microelectronic and Nanotechnology - Shamsuddin Research Centre (MiNT-SRC), Institute of Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia