[논문]Effect of aluminum doping on the structural and luminescent properties of ZnO nanoparticles synthesized by wet chemical method

Kumar, R. Saravana; Sathyamoorthy, R.; Sudhagar, P.; Matheswaran, P.; Hrudhya, C.P.; Kang, Yong Soo

doi:10.1016/j.physe.2011.01.022

Effect of aluminum doping on the structural and luminescent properties of ZnO nanoparticles synthesized by wet chemical method

Physica E, Low-dimensional systems & nanostructures, v.43 no.6, 2011년, pp.1166 - 1170

Kumar, R. Saravana (PG and Research Department of Physics, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India) , Sathyamoorthy, R. (PG and Research Department of Physics, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India) , Sudhagar, P. (Energy Materials Laboratory, Department of Chemical Engineering, Hanyang University, Seoul 133-791, South Korea) , Matheswaran, P. (PG and Research Department of Physics, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India) , Hrudhya, C.P. (PG and Research Department of Physics, Kongunadu Arts and Science College (Autonomous), Coimbatore 641 029, Tamil Nadu, India) , Kang, Yong Soo (Energy Materials Laboratory, Department of Chemical Engineering, Hanyang University, Seoul 133-791, South Korea)

Abstract ▼ AI-Helper

AbstractThe critical role that dopants play in semiconductor devices has stimulated research on the properties and the potential applications of semiconductor nanocrystals. Hence the investigation of the role of dopant concentration on the properties of semiconductor nanoparticles is very important from the viewpoints of basic physics as well as applications. In this context, in the present work Al-doped ZnO (AZO) nanoparticles were synthesized by simple wet chemical route. The structure and morphology of the nanoparticles analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM) revealed hexagonal wurtzite structure with flower-like clusters consisting of multi-nanorods. Energy Dispersive Spectrum (EDS) confirms the substitution of Al into ZnO lattice. Defect analysis and excitonic effect of the nanoparticles were investigated by photoluminescence (PL) and UV–Vis absorption measurements, respectively. Optical absorption showed band gap broadening due to quantum confinement effect. PL measurements exhibited both near band edge (NBE) and deep level (DL) emissions. The effect of doping concentration on the growth, crystallization and defect distribution of AZO nanoparticles was studied. Research highlights► Al-doped ZnO nanoparticles were synthesized by facile wet chemical approach. ► Influence of Al doping on the physical properties of ZnO nanoparticles was investigated. ► Crystallinity of the ZnO nanoparticles deteriorated with Al incorporation. ► Broadening of the band gap due to quantum confinement effect was observed upon Al doping. ► Al doping causes annihilation of defect emission and enhancement of UV emission in ZnO.

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Effect of aluminum doping on the structural and luminescent properties of ZnO nanoparticles synthesized by wet chemical method

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Effect of aluminum doping on the structural and luminescent properties of ZnO nanoparticles synthesized by wet chemical method

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