Multiscenario Coupled Model of GaN-on-Si HEMTs Epitaxial Design and Performance Improvement Based on Multiobjective Optimization Method. - Borui Deng; Yulong Fang; He Guan; Ziqiang Zeng; Yongchuan Tang; Ying Wang (IEEE Trans. Comput. Aided Des. Integr. Circuits Syst., 2026)