Understanding the Molecular Transistors

The molecular transistor is treated as an FET and electrostatic screening length, mechanisms of current modulation, and space charge contribution due to the current flow are evaluated semi-quantitatively, in order to compare the potential of the molecular transistor, as a logic element, with more familiar semiconductor-based field-effect transistors. It will be shown that a single resonant level is inadequate for achieving a large on-off ratio concomitant with high performance, leading to the concept of using mol­ecules to design an electronic filter.

By: Paul Solomon and Cherie R. Kagan

Published in: RC23137 in 2004


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