Feasibility of a low-power, low-voltage complementary organic thin film transistor buskeeper physical unclonable function

摘要

This paper demonstrates an implementation of physical unclonable function (PUF) using complementary organic transistors operating at low-voltage. PUF is an essential security element, and is important for various applications of organic devices. We implement a simple buskeeper PUF, which consists of two inverters. We confirm that the PUF bit values on the test chip can be read at a standard voltage for electronic circuits (3.3 V) via a standardized circuit board interface. We observed a low static current consumption (11.8 mu A/90 bits) for the PUF chip. The PUF performance, chip-to-board interface performance, and requirements for the board interface in an organic transistor chip are discussed based on the measurement results of the test chip. (C) 2019 The Japan Society of Applied Physics