Mohd Yusoff, Marmeezee and Mamat, Mohamad Hafiz and Abdullah, Mardhiah and Ismail, Ahmad Syakirin and Malek, Mohd Firdaus and Zoolfakar, Ahmad Sabirin and Al Junid, Syed Abdul Mutalib and Abu Bakar, Suriani and Mohamed, Azmi and Ahmad, Mohd Khairul and Shameem Banu, Itreesh Basha and Rusop, Mohamad (2020) Coupling heterostructure of thickness-controlled nickel oxidenanosheets layer and titanium dioxide nanorod arrays via immersionroute for self-powered solid-state ultraviolet photosensor applications. Measurement: Journal of the International Measurement Confederation, 149. pp. 1-11. ISSN 0263-2241 E-ISSN 1873-412X
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Abstract
A coupling heterostructure consisting of nickel oxide nanosheets (NNS) and titanium dioxide nanorod arrays (TNAs) was fabricated for self-powered solid-state ultraviolet (UV) photosensor applications. By controlling the thickness of the NNS layer by via varying the growth time from 1 to 5 h at a deposition temperature of 90 °C, the coupling NNS/TNAs heterojunction films were formed and their structural, optical, electrical and UV photoresponse properties were investigated. The photocurrent measured from the fabricated self-powered UV photosensor was improved by increasing the thickness of NNS from 140 to 170 nm under UV irradiation (365 nm, 750 µWcm−2) at 0 V bias. A maximum photocurrent density of 0.510 µA∙cm−2 was achieved for a sample with a NNS thickness of 170 nm and prepared with a 3 h NNS growth time. Our results showed that the fabricated NNS/TNAs heterojunction has potential applications for self-powered UV photosensors.
| Item Type: | Article (Journal) |
|---|---|
| Additional Information: | 6421/80399 |
| Uncontrolled Keywords: | Semiconductors, TiO2 nanorods, NiO nanosheets, Immersion route, Photosensor, Electronic materials |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN799.5 Nonmetallic minerals T Technology > TS Manufactures > TS200 Metal manufactures. Metalworking |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering |
| Depositing User: | Dr. Marmeezee Mohd. Yusoff |
| Date Deposited: | 09 May 2020 00:31 |
| Last Modified: | 09 May 2020 00:31 |
| URI: | http://irep.iium.edu.my/id/eprint/80399 |
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