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Rectifying effect from prototype DNA-Schottky diode / Chan Zhijian

In recent years, deoxyribonucleic acid (DNA) has been a targeted field of research due to its various properties and easy availability. Research findings have highlighted the semiconducting ability of the DNA molecule. However, proper understanding of its functionalities and properties, especially i...

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Main Author: Chan , Zhijian
Format: Thesis
Published: 2017
Subjects:
Q Science (General)
QC Physics
Online Access:http://studentsrepo.um.edu.my/9237/1/Chan_Zhijian.pdf
http://studentsrepo.um.edu.my/9237/6/Rectifying_Effect_From_Prototype_DNA%2DSchottky_Diode_%2D_v3.pdf
http://studentsrepo.um.edu.my/9237/
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spelling my.um.stud.92372019-02-21T18:32:40Z Rectifying effect from prototype DNA-Schottky diode / Chan Zhijian Chan , Zhijian Q Science (General) QC Physics In recent years, deoxyribonucleic acid (DNA) has been a targeted field of research due to its various properties and easy availability. Research findings have highlighted the semiconducting ability of the DNA molecule. However, proper understanding of its functionalities and properties, especially in the form of DNA film is inadequate. In this research, DNA thin films were prepared using the Langmuir-Blodgett (LB) method in the development of an Indium-Tin Oxide (ITO)/DNA/Aluminium (Al) Schottky diode. The thin film was analysed using structural and imaging techniques such as Atomic Force Microscopy (AFM) and Field Emission Scanning Electron Microscopy (FESEM). The film produced demonstrated a uniformly repeating pattern. The prototype sensor was then subjected to electrical characterisation involving acquisition of current-voltage (I-V) graphs, which suggested rectifying behaviour of the DNA molecule. Further studies of electrical behaviour revealed that electric field alignment improves electrical conductivity with a potential barrier of 0.796 eV for non-aligned films and 0.780 eV for aligned films. Significant improvements on measured ideality factor and series resistance post electric field alignment have also been observed. The results obtained suggest an exciting opportunity to achieve functional semiconductor properties for future research on fabrication of efficient and low-cost hybrid electronic devices based on DNA. 2017-08 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/9237/1/Chan_Zhijian.pdf application/pdf http://studentsrepo.um.edu.my/9237/6/Rectifying_Effect_From_Prototype_DNA%2DSchottky_Diode_%2D_v3.pdf Chan , Zhijian (2017) Rectifying effect from prototype DNA-Schottky diode / Chan Zhijian. Masters thesis, University of Malaya. http://studentsrepo.um.edu.my/9237/
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Student Repository
url_provider http://studentsrepo.um.edu.my/
topic Q Science (General)
QC Physics
spellingShingle Q Science (General)
QC Physics
Chan , Zhijian
Rectifying effect from prototype DNA-Schottky diode / Chan Zhijian
description In recent years, deoxyribonucleic acid (DNA) has been a targeted field of research due to its various properties and easy availability. Research findings have highlighted the semiconducting ability of the DNA molecule. However, proper understanding of its functionalities and properties, especially in the form of DNA film is inadequate. In this research, DNA thin films were prepared using the Langmuir-Blodgett (LB) method in the development of an Indium-Tin Oxide (ITO)/DNA/Aluminium (Al) Schottky diode. The thin film was analysed using structural and imaging techniques such as Atomic Force Microscopy (AFM) and Field Emission Scanning Electron Microscopy (FESEM). The film produced demonstrated a uniformly repeating pattern. The prototype sensor was then subjected to electrical characterisation involving acquisition of current-voltage (I-V) graphs, which suggested rectifying behaviour of the DNA molecule. Further studies of electrical behaviour revealed that electric field alignment improves electrical conductivity with a potential barrier of 0.796 eV for non-aligned films and 0.780 eV for aligned films. Significant improvements on measured ideality factor and series resistance post electric field alignment have also been observed. The results obtained suggest an exciting opportunity to achieve functional semiconductor properties for future research on fabrication of efficient and low-cost hybrid electronic devices based on DNA.
format Thesis
author Chan , Zhijian
author_facet Chan , Zhijian
author_sort Chan , Zhijian
title Rectifying effect from prototype DNA-Schottky diode / Chan Zhijian
title_short Rectifying effect from prototype DNA-Schottky diode / Chan Zhijian
title_full Rectifying effect from prototype DNA-Schottky diode / Chan Zhijian
title_fullStr Rectifying effect from prototype DNA-Schottky diode / Chan Zhijian
title_full_unstemmed Rectifying effect from prototype DNA-Schottky diode / Chan Zhijian
title_sort rectifying effect from prototype dna-schottky diode / chan zhijian
publishDate 2017
url http://studentsrepo.um.edu.my/9237/1/Chan_Zhijian.pdf
http://studentsrepo.um.edu.my/9237/6/Rectifying_Effect_From_Prototype_DNA%2DSchottky_Diode_%2D_v3.pdf
http://studentsrepo.um.edu.my/9237/
_version_ 1738506240792723456
score 13.211869

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