Influence of surface modification by 2-aminothiophenol on optoelectronics properties of ZnO nanoparticles |
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Authors: | Shashi B. Rana Vimal K. Bhardwaj Satbir Singh Amarpal Singh Navneet Kaur |
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Affiliation: | 1. Department of Electronics Technology , Guru Nanak Dev University, Regional Campus Gurdaspur , Punjab 143215 , India;2. Department of Chemistry , Indian Institute of Technology , Ropar , Punjab 140001 , India;3. Electronics and Communication Engineering, Beant College of Engineering &4. Technology , Gurdaspur 143215 , Punjab , India;5. Centre for Nanosciences &6. Nanotechnology, Panjab University , Chandigarh 160014 , India |
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Abstract: | In this study, a precipitation method was used to synthesise ZnO nanoparticles using suitable precursors. An efficient surface modification method was proposed in order to reduce the agglomeration among synthesised small sized ZnO nanoparticles using 2-aminothiophenol as a capping agent. This article briefly investigated the effects of capping agent like 2-aminothiophenol on the optoelectronic properties of ZnO nanoparticles. The modified effectivity of 2-aminothiophenol has been examined on the nanosized ZnO nanoparticle for fluorescence and UV–visible (UV–vis) studies. The mechanism was studied for ZnO nanoparticles light emitting capability under different conditions. By facilitating the capping of ZnO with 2-aminothiophenol, fluorescence emission of the surface defects vanishes and ultraviolet (UV) emission increases. Surface capping by 2-aminothiophenol effectively covers most of the surface defects of ZnO and results in quenching of the visible region. The UV–vis absorption spectra of modified ZnO nanoparticles has been influenced by modified ZnO nanoparticles as a result of surface modification; where marked blue shift in absorption edge results. By surface modification of ZnO nanoparticles, change in optoelectronics properties has opened the new scope and possibilities to explore and fine tune the optical character of the modified ZnO for various optoelectronics applications such as UV laser. |
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Keywords: | ZnO nanoparticles XRD UV–vis surface modification photoluminescence FTIR spectra optoelectronic application |
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