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All Journal Jurnal Ilmu Informasi Perpustakaan dan Kearsipan Jurnal Kesehatan Andalas IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jukema (Jurnal Kesehatan Masyarakat Aceh) Jurnal Basicedu Jurnal EDUTECH Undiksha Jurnal Ilmu Manajemen, Ekonomi dan Kewirausahaan Jurnal Basicedu Jurnal Flyover Optimal: Jurnal Ekonomi dan Manajemen Jurnal Pelayanan dan Pengabdian Masyarakat Indonesia Heca Journal of Applied Sciences
Mifthahul Jannah
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Journal : Heca Journal of Applied Sciences

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Enhancing TiO2 Photoelectrode Performance: The Role of La Doping Using the Sol-Gel Process Jannah, Mifthahul; Azmi, Nurul; Lala, Andi; Jalil, Zulkarnain; Mursal, Mursal
Heca Journal of Applied Sciences Vol. 3 No. 1 (2025): March 2025
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/hjas.v3i1.266

Abstract

Due to growing interest in renewable energy technologies, dye-sensitized solar cells (DSSCs) have emerged as promising alternatives to conventional photovoltaics. This study explores the enhancement of titanium dioxide (TiO2) photoelectrodes through doping with lanthanum (La), a rare earth element known for its ability to modify semiconductors' structural and electronic properties. La-doped TiO2 was synthesized using the sol-gel method with La concentrations ranging from 0 to 4 mol%. The resulting films were deposited onto substrates and sintered at 600 °C for 1 hour. Characterization techniques included X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS), UV-Vis spectrophotometry, and Fourier-transform infrared spectroscopy (FTIR). XRD confirmed the anatase phase of TiO2 and the appearance of La2O₃ phases with doping. The smallest crystallite size (8.20 nm) and lowest bandgap energy (3.31 eV) were achieved at 1 mol% La, compared to 3.52 eV for undoped TiO2. SEM-EDS indicated uniform La distribution, while FTIR revealed changes in surface chemistry. These results suggest that La doping, particularly at 1 mol%, can effectively enhance the optical and structural properties of TiO2, making it a promising candidate for improved DSSC performance.
Co-Authors Armitha Silalahi Aulia Rahma Badaron, Sitti Fauziah Cristina Efrinauli Sinaga Delmi Sulastri Dian G. Purba Elva Rahmah Emmi Juliati Sinaga Febrianti Situmorang Ferdian Admil Sandika Ferial Farouk Damanik Fernaendi Girsang Fernaendy Girsang Hapzi Ali Hermansyah Hermansyah Juwika Kristina Purba Lala, Andi Marzuki Marzuki Melda Rotua Simanjuntak Mursal Mursal Nurul Azmi, Nurul Pawer Darasa Panjaitan Poedji Loekitowati Hariani Reinita Reinita Rika Ardhana Roma Ulewi Simanjuntak Samyel Saragih Syarkawi, Mukhtar Thahir Yuniar Lestari Zulkarnain Jalil