Nithin Jacob, from the research group LCP, presented his work at the eMRS Fall 2024 conference on the advances in the field of materials science in Warsaw, Poland. Direct Z-scheme junctions have found applications in the field of air and water purification, hydrogen production and production of hydro-carbon fuels from CO₂ reduction. These junctions which often utilize dual n-type material have a theoretical maximum conversion efficiency of 11.4% taking into account charge carrier generation, separation and recombination. Chalcogenide materials have high absorption coefficients and are often made with earth abundant materials. These materials are potential candidates for Direct Z-scheme junctions that can be used on a large scale. In this study we simulate the current voltage characteristics of different heterojunctions (both dual n- and p-type as well as p-n junctions) to find promising photo-cathode chalcogenide materials that can be used as photocatalysts. The selection is made based on the photovoltaic performance of these photocatalytic materials, therefore this work reports on their ability to generate and separate charge carriers under illumination with the standard solar spectrum. Conventional solar cell parameters such as open circuit voltage, short circuit current and efficiency are used to evaluate the performance of these junctions. The study finally gives some case studies on direct Z-scheme junctions that could be used for CO₂ reduction to methanol and discusses their working principles.