Organic temperature sensors and organic analog-to-digital converters based on p-type and n-type organic transistors

Abstract

We present an organic temperature detector that consists of an organic temperature sensor and an organic complementary read-out circuit. The temperature sensor is a Wheatstone bridge composed of temperature-sensitive polymer films and metal films. The read-out circuit receives an analog temperature signal from the temperature sensor and outputs a 1-bit digital signal that reflects whether the temperature has exceeded a threshold temperature or not. For more detailed read-out, detection of the temperature range the temperature sensor is within also demonstrated using an organic 2-bit analog-to-digital converter as a read-out circuit.