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To achieve a steep subthreshold slope (SS) and a better $$I_\mathrm{ON}/I_\mathrm{OFF}$$ I ON / I OFF ratio is a major concern for switching applications in semiconductor devices. To overcome these issues, the tunnel field effect transistor (TFET) is a promising device, as it has low leakage current and a low subthreshold slope at room temperature, making it a highly useful device for...