Electronic Characterization of Au/DNA/ITO Metal-Semiconductor-Metal Diode and Its Application As a Radiation Sensor

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2016 Jan 23

PMID 26799703

Citations 4

Authors

Hassan Maktuff Jaber Al-Taii

Vengadesh Periasamy

Yusoff Mohd Amin

Affiliations

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Abstract

Deoxyribonucleic acid or DNA molecules expressed as double-stranded (DSS) negatively charged polymer plays a significant role in electronic states of metal/silicon semiconductor structures. Electrical parameters of an Au/DNA/ITO device prepared using self-assembly method was studied by using current-voltage (I-V) characteristic measurements under alpha bombardment at room temperature. The results were analyzed using conventional thermionic emission model, Cheung and Cheung's method and Norde's technique to estimate the barrier height, ideality factor, series resistance and Richardson constant of the Au/DNA/ITO structure. Besides demonstrating a strongly rectifying (diode) characteristic, it was also observed that orderly fluctuations occur in various electrical parameters of the Schottky structure. Increasing alpha radiation effectively influences the series resistance, while the barrier height, ideality factor and interface state density parameters respond linearly. Barrier height determined from I-V measurements were calculated at 0.7284 eV for non-radiated, increasing to about 0.7883 eV in 0.036 Gy showing an increase for all doses. We also demonstrate the hypersensitivity phenomena effect by studying the relationship between the series resistance for the three methods, the ideality factor and low-dose radiation. Based on the results, sensitive alpha particle detectors can be realized using Au/DNA/ITO Schottky junction sensor.

Citing Articles

Electronic Properties of Synthetic Shrimp Pathogens-derived DNA Schottky Diodes.

Rizan N, Yew C, Niknam M, Krishnasamy J, Bhassu S, Hong G Sci Rep. 2018; 8(1):896.

PMID: 29343758 PMC: 5772554. DOI: 10.1038/s41598-017-18825-6.

Effects of Environmental Factors and Metallic Electrodes on AC Electrical Conduction Through DNA Molecule.

Abdalla S, Obaid A, Al-Marzouki F Nanoscale Res Lett. 2017; 12(1):316.

PMID: 28454482 PMC: 5407417. DOI: 10.1186/s11671-017-2076-y.

Measuring the Electronic Properties of DNA-Specific Schottky Diodes Towards Detecting and Identifying Basidiomycetes DNA.

Periasamy V, Rizan N, Al-Taii H, Tan Y, Tajuddin H, Iwamoto M Sci Rep. 2016; 6:29879.

PMID: 27435636 PMC: 4951751. DOI: 10.1038/srep29879.

Humidity influenced capacitance and resistance of an Al/DNA/Al Schottky diode irradiated by alpha particles.

Al-Taii H, Amin Y, Periasamy V Sci Rep. 2016; 6:25519.

PMID: 27160654 PMC: 4861926. DOI: 10.1038/srep25519.

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