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Hussain S, Iqbal M, Khan AA, Khan MN, Mehboob G, Ajmal S, Ashfaq JM, Mehboob G, Ahmed MS, Khisro SN, Li CJ, Chikwenze R, Ezugwu S. Fabrication of Nanostructured Cadmium Selenide Thin Films for Optoelectronics Applications. Front Chem 2021; 9:661723. [PMID: 33898395 PMCID: PMC8058377 DOI: 10.3389/fchem.2021.661723] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 03/08/2021] [Indexed: 11/23/2022] Open
Abstract
There is lot of research work at enhancing the performance of energy conversion and energy storage devices such as solar cells, supercapacitors, and batteries. In this regard, the low bandgap and a high absorption coefficient of CdSe thin films in the visible region, as well as, the low electrical resistivity make them ideal for the next generation of chalcogenide-based photovoltaic and electrochemical energy storage devices. Here, we present the properties of CdSe thin films synthesized at temperatures (below 100°C using readily available precursors) that are reproducible, efficient and economical. The samples were characterized using XRD, FTIR, RBS, UV-vis spectroscopy. Annealed samples showed crystalline cubic structure along (111) preferential direction with the grain size of the nanostructures increasing from 2.23 to 4.13 nm with increasing annealing temperatures. The optical properties of the samples indicate a small shift in the bandgap energy, from 2.20 to 2.12 eV with a decreasing deposition temperature. The band gap is suitably located in the visible solar energy region, which make these CdSe thin films ideal for solar energy harvesting. It also has potential to be used in electrochemical energy storage applications.
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Affiliation(s)
- Shahnwaz Hussain
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Mazhar Iqbal
- Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Ayaz Arif Khan
- Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Muhammad Nasir Khan
- Central Diagnostic Laboratory (CDL), Physics Division, Pakistan Institute of Nuclear Science and Technology (PINSTECH), Islamabad, Pakistan
| | - Ghazanfar Mehboob
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Sohaib Ajmal
- Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - J M Ashfaq
- Department of Physics, University of Kotli Azad Jammu and Kashmir, Kotli, Pakistan
| | - Gohar Mehboob
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
| | - M Shafiq Ahmed
- Department of Physics, University of Kotli Azad Jammu and Kashmir, Kotli, Pakistan
| | - Said Nasir Khisro
- Department of Physics, University of Kotli Azad Jammu and Kashmir, Kotli, Pakistan
| | - Chang-Jiu Li
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Raphael Chikwenze
- Department of Physics, Faculty of Sciences, Alex Ekwueme Federal University Ndufu-Alike Ikwo, Abakaliki, Nigeria
| | - Sabastine Ezugwu
- Department of Physics & Astronomy, University of Western Ontario, London, ON, Canada
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