https://eksakta.ppj.unp.ac.id/index.php/eksakta EKSAKTA: Berkala Ilmiah Bidang MIPA, FMIPA UNP, Universitas Negeri Padang Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia en-US EKSAKTA: Berkala Ilmiah Bidang MIPA 1411-3724 <p>This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License <a href="https://creativecommons.org/licenses/by/4.0/">(http://creativecommons.org/licenses/by/4.0/)</a> which permits unrestricted non-commercial use, distribution and reproduction in any medium </p> https://eksakta.ppj.unp.ac.id/index.php/eksakta/article/view/573 <p>Photovoltaic (PV) cells have garnered significant attention as a sustainable energy solution in addressing global energy demands. The optimization of PV cells, particularly through advancements in electrode materials and electrolyte formulations, has been a focal point of research. This review explores the utilization of copper-aluminum (Cu-Al) electrodes and magnesium sulfate (MgSO₄) based gel electrolytes as key components in enhancing PV cell performance. The unique properties of Cu-Al electrodes, such as their electrical conductivity and cost-effectiveness, are critically analyzed alongside the stability and ionic conductivity provided by MgSO₄ gel electrolytes. The review synthesizes recent experimental findings, highlights the synergistic effects of these materials, and identifies challenges in scaling up their application. Furthermore, this article outlines potential future research directions, including the development of more efficient fabrication techniques and hybrid material systems. By offering a comprehensive evaluation of existing studies, this review aims to guide further innovation in PV cell optimization for sustainable energy solutions.&nbsp; &nbsp;</p> Fitri Yanni Rahadian Zainul Copyright (c) 26 01 https://eksakta.ppj.unp.ac.id/index.php/eksakta/article/view/570 <p>This research aims to obtain the correct concentration and time interval for administering golden snail Liquid Organic Fertilizer (LOF) on the growth and yield of sweet corn ( <em>Zea mays var. saccharata </em>Sturt). The experiment was carried out in Korong Gadang Village, Padang, West Sumatra on Ultisol soil type with a height of 10 meters above sea level. The experiment used a factorial completely randomized design (CRD), the first factor was the LOF of golden snails 0ml/L, 50 ml/L, 100 ml/L, the second factor was the time interval for administering 5, 10, and 15 days with 3repetitions. times to obtain 27 experimental units. The parameters observed consisted of plant height, ILD, age at which male flowers appeared, age at which female flowers appeared, weight of cobs with husks, weight of cobs without husks, length of cobs, number of rows of cobs, number of seeds per row, weight of fresh shells, production per plot and per Ha. The experimental results showed that there was an interaction between the concentration and the time interval for administering golden snail LOF on the weight of shelled cobs and the weight of fresh shelled shells when given aconcentrationof100ml/L.</p> Zahanis Zahanis Cindy Agustin Putri Milda Ernita Copyright (c) 2025 Zahanis Zahanis, Cindy Agustin Putri, Milda Ernita https://creativecommons.org/licenses/by/4.0 2025-01-20 2025-01-20 26 01 12 22 10.24036/eksakta/vol26-iss01/570