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In this paper,a new structure of a 4H-SiC bipolar junction transistor(BJT) with a buried layer(BL) in the base is presented.The current gain shows an approximately 100% increase compared with that of the conventional structure.This is attributed to the creation of a built-in electric field for the minority carriers to transport in the base which is explained based on 2D device simulations.The optimized design of the buried layer region is also considered by numeric simulations.
In this paper, a new structure of a 4H-SiC bipolar junction transistor (BJT) with a buried layer (BL) in the base is presented. attributed to the creation of a built-in electric field for the minority carriers to transport in the base which is explained based on 2D device simulations. The optimized design of the buried layer region is also considered numeric simulations.