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超寬禁帶半導體氧化鎵和氮化鋁特性研究Research on the Characteristics of Ultra-wide Bandgap Semiconductor GaO and AlN張道華深圳平湖實驗室第四代半導體首席科學家、新加坡工程院院士ZHANG DaohuaChief Scientist of Fourth-generation Semiconductors of Shenzhen Pinghu Laboratory, Academician the Academy of Engineering, Singapore