中国首创！攻克涉半导体世界难题

Core Insights - The semiconductor industry faces a fundamental contradiction: while the performance of next-generation materials is known to be superior, the manufacturing process remains uncertain [1] - A significant breakthrough has been achieved by a research team led by Academician Hao Yue and Professor Zhang Jincheng, transforming "island-like" connections between materials into atomically smooth "films," enhancing chip thermal efficiency and overall performance [1][5] - This innovation marks a historic leap, breaking a two-decade technical stagnation and showcasing immense potential in cutting-edge technology [1] Group 1: Technical Breakthrough - The quality of interfacial layers in semiconductor devices directly impacts overall performance, particularly in third and fourth-generation semiconductors like Gallium Nitride (GaN) and Gallium Oxide (Ga2O3) [2] - Traditional methods using aluminum nitride as an intermediate "adhesive layer" resulted in uneven "island" formations, creating significant thermal resistance and leading to performance degradation [2][4] - The research team developed an "ion implantation-induced nucleation" technique, transforming the growth process from random to controlled, resulting in a uniform single-crystal film that significantly reduces interface defects [4][6] Group 2: Performance Enhancement - The new aluminum nitride film technology has led to a remarkable performance increase of 30% to 40% in GaN microwave power devices, achieving output power densities of 42 W/mm and 20 W/mm in the X-band and Ka-band, respectively [6] - This advancement allows for increased detection ranges without enlarging chip sizes and enhances signal coverage and energy efficiency for communication base stations [6] - The technology's benefits will gradually manifest in consumer devices, potentially improving signal reception and battery life in mobile phones, especially in remote areas [6][9] Group 3: Future Implications - The research establishes aluminum nitride as a versatile integration platform, addressing global challenges in high-quality semiconductor material integration and providing a replicable model for future advancements [7][8] - The team aims to explore even more efficient materials, such as diamond, which could further enhance power handling capabilities by an order of magnitude [8] - This achievement reflects over two decades of dedicated research, marking a significant shift for China in the semiconductor field from following to leading, and offering a new paradigm for global semiconductor technology advancement [8][9]