Progress and Challenges in the Synthesis of Two-Dimensional Lateral Heterostructures.

Two-dimensional (2D) lateral heterostructures, an interesting class of nanostructures, have shown great promise in optoelectronics and nanoelectronics due to their unique electronic and optical properties. In recent years, significant progress has been made in the controlled growth of 2D lateral heterostructures. However, challenges remain in areas such as material selection and compatibility, interface quality, and precise control over the growth process. High-quality interfaces are critical for the optoelectronic performance of these heterostructures, yet ensuring uniformity and consistency during fabrication continues to be a major obstacle. This review provides a comprehensive overview of the recent developments in the controlled growth of 2D lateral heterostructures. It examines the fabrication methods for various types of 2D lateral heterostructures and their associated challenges. The review also discusses the properties and potential applications of these heterostructures, aiming to offer a deeper understanding of their preparation, characteristics, and future prospects. By identifying existing challenges and opportunities in the fabrication process, this work seeks to guide future advancements in the field and support the efficient large-scale production of high-quality 2D lateral heterostructures.