Solar energy has emerged as a promising alternative to traditional sources of energy, such as fossil fuels. Photovoltaic devices, also known as solar cells, convert sunlight directly into electricity, and are essential to the success of the energy transition. However, conventional silicon-based solar cells are limited by their high production cost, large-scale manufacturing requirements, and the environmental impact of their fabrication. Perovskite solar cells (PSCs) have emerged as a potential solution to these challenges, with their ease of fabrication, low-cost, and high power conversion efficiency. However, the interface and grain boundary effects in PSCs can affect their stability, and therefore, it is essential to understand the underlying mechanisms to optimize their performance. This paper aims to explore the interface and grain boundary effects in PSCs and their impact on the device's efficiency, stability, and longevity. By shedding light on these crucial aspects, we aim to contribute to the development of high-performance and stable perovskite solar cells that can help overcome the shortcomings of conventional silicon solar cells.
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