Low voltage pentacene OTFT integration for smart sensor control circuits

Prashanth S. Kumar; Pratyush Rai; Gyanesh N. Mathur; Vijay K. Varadan

doi:10.1117/12.864248

30 March 2010 Low voltage pentacene OTFT integration for smart sensor control circuits

Prashanth S. Kumar, Pratyush Rai, Gyanesh N. Mathur, Vijay K. Varadan

Proceedings Volume 7646, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2010; 76460M (2010) https://doi.org/10.1117/12.864248
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

The past decade has witnessed remarkable progress in Organic electronics and Organic sensor technology on flexible substrates. Temperature and strain sensors for wireless active health monitoring systems have been tested and demonstrated. These sensors need control circuits to condition and transmit the measurand to the data acquisition system. The control circuits have to be incorporated on to the same substrate as the sensing element. So far, Pentacene based Organic Thin-Film Transistors (OTFTs) have been the most promising candidates for integrated circuit applications. To this end, optimization of the OTFT fabrication process is needed to obtain reliable and reproducible transistor performance in terms of mobility, threshold voltage, drive currents, minimal supply voltage and minimal leakage currents. The objective here is to minimize the leakage losses and the voltage required to drive this circuitry while maintaining process compatibility. The choice of dielectric material has been proven to be a key factor influencing all the desirable characteristics stated above. This paper investigates the feasibility of using a High K/Low K, Tantalum Pentoxide/Poly (4-vinyl phenol) (PVP) hybrid dielectric in Pentacene-based OTFTs to lower the operating voltages. Inverters and simple logic gates like 2-input NAND are simulated with these OTFTs. The results indicate that these OTFTs can indeed be used to build large scale integrated circuits with reproducibility.

Citation Download Citation

Prashanth S. Kumar, Pratyush Rai, Gyanesh N. Mathur, and Vijay K. Varadan "Low voltage pentacene OTFT integration for smart sensor control circuits", Proc. SPIE 7646, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2010, 76460M (30 March 2010); https://doi.org/10.1117/12.864248

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available