The paper investigates the temperature dependence of the electrical characteristics of an organic thin film transistor (OTFT), through the development of an analytical model based on the MTR (multiple trapping and release) mechanism, that is related to an exponential density of states in the organic semiconductor layer at the insulator interface. The aim is to realize a simple single-ended organic sensor, consisting of a diode-connected OTFT, with a high sensitivity and linearity in a wide temperature range (from 230 to 330 K). The fabricated sensor shows the maximum linearity of 99.95% at a bias current of 22 nA with a sensitivity of about 100 mV/K, exceeding that of silicon-based sensors, and a good stability with an error lower than 1%. The model used to describe the device behavior demonstrates that the linearity is given by the compensation of two non-linear functions of temperature.

Modeling of an Organic Thin Film Transistor as Temperature Sensor

Liguori R.;Licciardo G. D.;Di Benedetto L.
2023-01-01

Abstract

The paper investigates the temperature dependence of the electrical characteristics of an organic thin film transistor (OTFT), through the development of an analytical model based on the MTR (multiple trapping and release) mechanism, that is related to an exponential density of states in the organic semiconductor layer at the insulator interface. The aim is to realize a simple single-ended organic sensor, consisting of a diode-connected OTFT, with a high sensitivity and linearity in a wide temperature range (from 230 to 330 K). The fabricated sensor shows the maximum linearity of 99.95% at a bias current of 22 nA with a sensitivity of about 100 mV/K, exceeding that of silicon-based sensors, and a good stability with an error lower than 1%. The model used to describe the device behavior demonstrates that the linearity is given by the compensation of two non-linear functions of temperature.
2023
978-3-031-08135-4
978-3-031-08136-1
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4806718
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact