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All Journal VALENSI Jurnal Periodic Jurusan Kimia UNP Sainstek Indonesian Journal of Chemical Science Chimica et Natura Acta Pelita Eksakta Makara Journal of Science MASALIQ: Jurnal Pendidikan dan Sains
Sherly Kasuma Warda Ningsih
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padang State University, Kampus Air Tawar, Jl. Prof. Dr. Hamka, West Sumatera 25161
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Journal : masaliq jurnal pendidikan dan sains

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Pengaruh Massa Sodium Dodecyl Sulfate terhadap Nilai Bandgap Semikonduktor TiO₂-ZnO Adha, Valen Febri; Ningsih, Sherly Kasuma Warda; Hardeli, Hardeli
MASALIQ Vol 5 No 4 (2025): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i4.6696

Abstract

Modification of the TiO₂-ZnO semiconductor through the addition of Sodium Dodecyl Sulfate (SDS) has been carried out to reduce the bandgap energy using the sol-gel method. The SDS mass variations used in the synthesis process were 0.015, 0.020, 0.025, 0.030, and 0.035 grams. The synthesized samples were characterized using UV-Vis Diffuse Reflectance Spectroscopy (DRS) to determine the bandgap values. The characterization results showed that the addition of 0.025 grams of SDS produced the lowest bandgap value, measured at 3.16 eV. This reduction in bandgap is attributed to changes in the material's physical and chemical surface structure, influenced by the interaction between the surfactant and the TiO₂-ZnO surface, microstructural alterations, and modifications in crystallinity. However, at higher SDS concentrations (≥0.025 grams), the bandgap value increased again, due to particle agglomeration and hindered electron transfer. These findings indicate that the addition of SDS surfactant within an optimal range can enhance the optical properties of semiconductor materials, while excessive addition may degrade performance due to undesirable morphological changes.
Pengaruh Kecepatan Pengadukan ZnO sebagai Lapis Ganda pada Semikonduktor TiO₂-ZnO terhadap Nilai Efisiensi Dye Sensitized Solar Cell Saputra, Dihan Kurnia; Ningsih, Sherly Kasuma Warda; Hardeli, Hardeli
MASALIQ Vol 5 No 5 (2025): SEPTEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i5.6949

Abstract

This study aims to evaluate the efficiency of dye-sensitized solar cells (DSSC) by varying the stirring speed during the synthesis of ZnO as a double layer on the TiO₂-ZnO/SDS (Sodium Dodecyl Sulfate) semiconductor structure. The research is grounded in the importance of optimizing semiconductor structures to enhance solar energy conversion efficiency. The sol-gel method was used to synthesize ZnO at stirring speeds of 300, 600, 900, 1200, and 1500 rpm. DSSC fabrication was conducted using the doctor blade method with poly tannic acid as the dye. The operating principle of DSSC relies on photon absorption by the dye, where excited electrons are injected into the semiconductor. Efficiency measurements were carried out using a multimeter to obtain voltage and resistance values. The results showed that the highest efficiency of 0.174% was achieved at a stirring speed of 1200 rpm. This finding indicates that stirring speed during ZnO synthesis affects the morphology of the semiconductor, thereby influencing the photon-to-energy conversion efficiency of the DSSC. This study contributes to the development of more efficient DSSCs based on double-layer semiconductor structures through the control of synthesis parameters. Keywords: Semiconductor; ZnO; TiO₂-ZnO; SDS; DSSC
Preparasi TiO2 Nanotube Arrays (TNAs) Menggunakan Metode Anodisasi Dua Tahap Ramadani, Zahara; Ningsih, Sherly Kasuma Warda
MASALIQ Vol 6 No 2 (2026): MARET
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v6i2.9066

Abstract

Titanium dioxide (TiO₂) is a semiconductor material widely used in various ultraviolet-responsive applications; however, the controlled growth of well-ordered and homogeneous TiO₂ nanotube arrays (TNAs) via two-step anodization still requires further investigation. This study aimed to analyze TNA growth, current density behavior, and optical characteristics using a two-step anodization method. The experimental approach was conducted on Ti foil substrates at a constant potential of 50 V for 60 minutes in the first step and 30 minutes in the second step. Current density was recorded throughout the anodization process, while the optical properties of the TNAs were analyzed using UV-Vis Diffuse Reflectance Spectroscopy (DRS) with Tauc plot analysis. The results revealed three main current density phases in the first step, namely an initial decrease from 14 mA/cm² to 10 mA/cm² within 30 seconds, an increase to 11.5 mA/cm² at 120 seconds, and a relatively constant condition thereafter, whereas the second step exhibited a faster and more stable current decrease. The band gap energy of the TNAs was determined to be 3.37 eV, with dominant absorption in the ultraviolet region at around 367.95 nm. These findings confirm the effectiveness of two-step anodization in producing stable and well-ordered TNAs, which can potentially be optimized for various photon-based applications that exploit ultraviolet response.
Co-Authors Adha, Valen Febri Aini, Syamsi Budhi Oktavia Burma, Resna Desy Kurniawati Edi Nasra Erpina, Erpina Fadhilah Fadhilah Fatmawati, Rani Hardeli Hardeli Indang Dewata Jarnuzi Gunlazuardi Marlini, Rahmida Miftahul Khair Minda Azhar Mukhaiyar, Riki Mulia, Melindra Nizar, Umar Kalmar Pernadi, Niza Lian RAHMAT WIBOWO Rizki, Suci Yulia Saputra, Dihan Kurnia Sidiq, Aqil Marsya Suryelita, Suryelita Syauqi, Muhammad Iqbal Utami, Chichi Amne Veronita, Silvi Zahara Ramadani, Zahara Zulhendra, Zulhendra