Photoelectric converter with plural regions

摘要

A photoelectric converter of semiconductor transistor comprises two semiconductor regions of same electroconductive type and a semiconductor region of opposite electroconductive type to that of the two semiconductor regions. The semiconductor region of opposite electroconductive type is irradiated with a light. An amplified power is output from at least one of the two semiconductor regions of same electroconductive type. The semiconductor region of the opposite electroconductive type comprises a semiconductor region that accumulates a charge generated by light input and a semiconductor region acting as a control electrode region for the semiconductor transistor.