Perovskite nanocrystals are a class of materials that have gained significant attention in recent years for their unique optical and electronic properties. These nanocrystals are made up of perovskite structures, which are characterized by a cubic crystal lattice with a general formula of ABX3, where A and B are cations and X is an anion. Perovskite nanocrystals are known for their high photoluminescence quantum yields, tunable bandgaps, and excellent charge carrier mobility, making them promising materials for applications in optoelectronic devices such as light-emitting diodes (LEDs), solar cells, and photodetectors. These nanocrystals can be synthesized using various methods, including solution-based techniques such as hot-injection and ligand-assisted reprecipitation. Research in the field of perovskite nanocrystals aims to further understand their fundamental properties, improve their stability, and explore new applications for these versatile materials. Continued advancements in this area have the potential to revolutionize the field of optoelectronics and enable the development of more efficient and cost-effective devices for various technological applications.