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Bulk Planar Junctionless Transistor (BPJLT): An Attractive Device Alternative for Scaling

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3 Author(s)
Gundapaneni, S. ; Dept. of Electr. Eng., Indian Inst. of Technol. Bombay, Mumbai, India ; Ganguly, S. ; Kottantharayil, A.

We propose a novel highly scalable source-drain-junction-free field-effect transistor that we call the bulk planar junctionless transistor (BPJLT). This builds upon the idea of an isolated ultrathin highly doped device layer of which volume is fully depleted in the off-state and is around flatband in the on-state. Here, the leakage current depends on the effective device layer thickness, and we show that with well doping and/or well bias, this can be controllably made less than the physical device layer thickness in a bulk planar junction-isolated structure. We demonstrate by extensive device simulations that these additional knobs for controlling short-channel effects reduce the off-state leakage current by orders of magnitude for similar on-state currents, making the BPJLT highly scalable.

Published in:

Electron Device Letters, IEEE  (Volume:32 ,  Issue: 3 )