Conduction mechanisms in diamond-like carbon thin films prepared by PECVD method
The aim of this study is to prepare thin films of diamond-like carbon (a-C:H) and to determine the conduction mechanisms in the diamond-like carbon thin films. Diamond-like carbon (a-C:H) thin films were deposited on corning glass substrates using PECVD method. The samples were fabricated in Al/a-C:...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English |
| Published: |
2010
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/16336/1/MohdAzamnieAbdMFSA2010.pdf |
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| Summary: | The aim of this study is to prepare thin films of diamond-like carbon (a-C:H) and to determine the conduction mechanisms in the diamond-like carbon thin films. Diamond-like carbon (a-C:H) thin films were deposited on corning glass substrates using PECVD method. The samples were fabricated in Al/a-C:H/Al structures in order to study the conduction mechanisms through the thin films. Current-voltage (IV) measurements were carried out using an electrometer. The I-V curves of the diamond-like carbon thin films at 84 nm and 110 nm show the features of ohmic characteristics in the lower field region (E < 2X107 V/m). In the higher field region (E > 2X107 V/m), the I-V characteristics of the diamond-like carbon thin film at 110 nm show the conduction in the diamond-like carbon thin film follows space-chargelimited current (SCLC) mechanism. The conduction mechanisms in the diamond-like carbon thin films were influenced by the thickness of the films. |
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