摘要
Semiconductor materials and devices play an important role in modern science and technology.Historically,there would be neither microelectronics without silicon materials,nor high-speed communica-tion without compound semiconductors such as GaAs and InP.Today,driven by the demand of highly advanced science and technology,the semiconductor material system has evolved into a new era.Wide band gap semiconductors represented by GaN and SiC,and ultra-wide band gap semiconductors represented by Ga_(2)O_(3) and diamond,have become predominant research areas of modern semiconductor science and technology.