In a remarkable step towards next-generation renewable energy solutions, researchers from SRM University-AP, Amaravati, have published their latest work in the prestigious IEEE Access (Impact Factor: 3.6 | Q1). Dr Saswat Kumar Ram, Assistant Professor, Department of Electronics and Communication Engineering, Dr Banee Bandana Das, Assistant Professor, Department of Computer Science and Engineering and Mr Tarun Vasamsetti, M.Tech. student, have authored the research paper titled “Performance-Oriented Design and Numerical Investigation of a 34% Efficient Two-Terminal Monolithic Perovskite/Silicon Tandem Solar Cell” which explores how combining perovskite and silicon materials can dramatically enhance solar energy conversion efficiency.

Abstract

This work presents a simulation-based design and optimization of a two-terminal monolithic perovskite/silicon tandem solar cell to achieve high power conversion efficiency. A wide-bandgap perovskite top cell (1.68 eV) is integrated with a crystalline silicon (1.12 eV) bottom cell using SCAPS-1D simulation. Key parameters such as absorber thickness, interface defect density, band alignment, and current matching are systematically optimized. The proposed structure achieves a maximum efficiency of 34%, with an open-circuit voltage of 2.02 V. The study provides practical design insights for next-generation high-efficiency tandem photovoltaic devices.

Explanation in Layperson’s Terms

Solar panels usually use only one material (like silicon), which limits how much sunlight they can convert into electricity. In this research, we combined two materials—perovskite and silicon—to form a “tandem” solar cell.

Think of it like a two-layer system:

• The top layer absorbs high-energy sunlight
• The bottom layer absorbs the low-energy light

By doing this, we use sunlight more efficiently and generate more electricity. Using computer simulations, we optimized the design and achieved a very high efficiency of 34%, which is much better than traditional solar cells.

Practical Implementation / Social Impact of the Research

This research contributes to the development of next-generation solar technologies with significantly higher efficiency. High-efficiency tandem solar cells can reduce the cost of electricity generation and improve energy output from limited space, making them highly suitable for large-scale solar farms and urban installations. This advancement supports sustainable energy solutions and helps reduce dependence on fossil fuels, contributing to a cleaner and greener environment.

Future Research Plans

• Experimental validation of the proposed tandem solar cell design
• Development of lead-free and environmentally friendly perovskite materials
• Improving device stability and lifetime
• Incorporating advanced optical modelling and real-world fabrication constraints
• Further efficiency enhancement beyond 34%

The study reflects a collaborative academic environment within the institution, emphasizing advanced device modelling, simulation, and optimization of next-generation photovoltaic technologies. The work highlights the institution’s strong focus on interdisciplinary research, innovation, and excellence in sustainable energy systems.