<p>➀ Diamond semiconductors are poised to become the future king of semiconductor materials due to their exceptional physical properties like hardness, acoustic velocity, thermal conductivity, and Young's modulus.</p><p>➁ Diamond semiconductors are highly suitable for power semiconductors due to their excellent dielectric breakdown strength, high thermal conductivity, and high-frequency operation capability.</p><p>➂ Japan is leading in the research and development of diamond semiconductor materials, with companies like Orbray and Saga University making significant breakthroughs.</p><p>➃ Diamond semiconductors have potential applications in communication satellites, nuclear power, and quantum computing.</p><p>➄ The United States and Europe are also actively investing in diamond semiconductor research and development, with companies like Diamond Foundry and DIAMFAB making advancements.</p><p>➅ China is also making progress in diamond semiconductor research and development, with companies like Hefeng Diamond and Shangtian Xuan Semiconductor Technology Co., Ltd. leading the way.</p>