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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 858Structural and Optical Properties of Fe-Doped ZnO...

Structural and Optical Properties of Fe-Doped ZnO Nanorods

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Abstract:

Fe-doped zinc oxide nanorods (ZnO NRs) were synthesized by ex-situ doping using spray pyrolysis technique. In this work, the undoped ZnO NRs were pre-synthesized via chemical vapor deposition using Zn powder and oxygen gas at 650 °C. The average length and diameter of the ZnO NRs are 4.1 ± 1.1 μm and 553.1 ± 89.6 nm, respectively. The average aspect ratio and areal density of ZnO NRs is 8.2 ± 2.9 and 6.2 ± 1.1 NRs/um², respectively. Subsequently, these undoped ZnO NRs were kept in the horizontal tube furnace, whereas the dopant solution (FeCl₃) of 0.05 M concentration was kept in the aerosol generator, which was located outside of the furnace. The Fe aerosol was flowed into the reactor when substrate temperature reached 650 °C to achieve ex-situ doping. At this temperature, some of the Fe atoms were driven into the NRs, forming Fe-doped ZnO NRs particularly at their outer layer. The presence of Fe 2p_1/2 and Fe 2p_3/2 peaks at 722.3 eV and 705.7 eV in XPS analysis indicates that Fe atoms were in the local structure of FeO. The Fe-doped ZnO NRs have poor crystal quality attributed to the low I_UV/I_Vis ratio in room temperature PL analysis.

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Frontiers in Materials and Minerals Engineering

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Periodical:

Advanced Materials Research (Volume 858)

Pages:

151-158

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.858.151

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Online since:

November 2013

Authors:

Siti Nor Qurratu Aini Abd Aziz, Swee Yong Pung*, Zainovia Lockman, Nur Atiqah Hamzah

Keywords:

Chemical Vapor Deposition (CVD), Ex Situ Doping, Iron, Nanorods, Zinc Oxide (ZnO)

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