OFET Biosensor: Simulation and Analysis for Various Biomolecules

Authors S. Bathla1, A. Verma2, S.I. Amin3, A. Kumar4, V.K. Jain2
Affiliations

1Electronics and Communication Engineering, ASET, Amity University Uttar Pradesh, India

2AIARS (M& D), AIRAE, Amity University Uttar Pradesh, India

3Electronics and Communication Engineering, Jamia Millia Islamia, Delhi, India

4School of Engineering and Technology, Central University of Haryana, Mahendergarh, India

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Issue Volume 16, Year 2024, Number 5
Dates Received 02 June 2024; revised manuscript received 19 October 2024; published online 30 October 2024
Citation S. Bathla, A. Verma, S.I. Amin, et al., J. Nano- Electron. Phys. 16 No 5, 05014 (2024)
DOI https://doi.org/10.21272/jnep.16(5).05014
PACS Number(s) 07.05.Tp, 87.85.fk
Keywords DPP, OFET (3) , High-K dielectric (2) , Sensitivity (11) , Pentacene, Tetracene.
Annotation

A p-type (DiketoPyrroloPyrrole as organic semiconductor) Dual Gate OFET based biosensor is proposed for the detection of biomolecules in the nanocavity provided at the source end underlapping the region of the structure both at the top and at the bottom. Various biomolecules have been investigated for their effect on Drain current, ID which is a measure of sensitivity of the device. This device is then compared with different organic p-type semiconductor materials such as pentacene and tetracene based OFET biosensor. Drain current and sensitivity of these devices have also been calculated which shows that DPP (DiketoPyrroloPyrrole) based OFET biosensor has higher sensitivity of 3.0  103 as compared to pentacene and tetracene based OFET biosensors. Simulation of these devices has been done in SILVACO ATLAS TCAD tool. The simulation results also show that the proposed device even shows higher sensitivity for high-k dielectrics such as HfO2, Ta2O5, TiO2.

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