A Consideration on Amplification Function in BJT Evers-Moll Model and PTT (I) ---- V-I Characteristics ----

Abstract

In 1989, the notion of Photon Transport Transistor (PTT) has been proposed by B.J. Van Zeghbroeck et al., at IBM Research Center at that time. PTT is an optical coupling device of Light Emitting Diode (LED) and light receiving diode (Photo Diode, PD) where the carrier of the base layer is light (Photon) only. Later in 1996, W. N. Cheung and Paul J. Edwards have shown that PTT can be a very low noise amplifier in a positive feedback circuit, based on theoretical calculations of the noise figure by Quantum Mechanics. In this paper we consider the amplification principle noticing the similarity of the VI characteristics between the Bipolar Junction Transistor (BJT) and PTT.