Improvement of the optical properties of ZnO nanorods by Fe doping

Seonghoon Baek; Jaejin Song; Sangwoo Lim

doi:10.1016/j.physb.2007.05.030

Improvement of the optical properties of ZnO nanorods by Fe doping

Seonghoon Baek, Jaejin Song, Sangwoo Lim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

122 Citations (Scopus)

Abstract

Fe-doped ZnO nanorods were prepared using an in situ low-temperature hydrothermal synthesis. Fe-doped ZnO nanorods synthesized in the solution containing 30 mM of (CH₃CO₂)₂Fe exhibited a 40% increased I_UV/I_DLE ratio compared to undoped ZnO nanorods. Oxygen deficiencies were significantly reduced with Fe doping in ZnO nanorods, and Fe was incorporated in ZnO nanostructure in a Fe³⁺-like state. It is suggested that the addition of Fe³⁺ into a ZnO nanostructure disturbs the recombination of electrons and holes by bonding with electrons in singly ionized oxygen vacancies. Consequently, green emission is reduced and the optical properties of ZnO nanorods are improved.

Original language	English
Pages (from-to)	101-104
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	399
Issue number	2
DOIs	https://doi.org/10.1016/j.physb.2007.05.030
Publication status	Published - 2007 Nov 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.physb.2007.05.030

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abstract = "Fe-doped ZnO nanorods were prepared using an in situ low-temperature hydrothermal synthesis. Fe-doped ZnO nanorods synthesized in the solution containing 30 mM of (CH3CO2)2Fe exhibited a 40% increased IUV/IDLE ratio compared to undoped ZnO nanorods. Oxygen deficiencies were significantly reduced with Fe doping in ZnO nanorods, and Fe was incorporated in ZnO nanostructure in a Fe3+-like state. It is suggested that the addition of Fe3+ into a ZnO nanostructure disturbs the recombination of electrons and holes by bonding with electrons in singly ionized oxygen vacancies. Consequently, green emission is reduced and the optical properties of ZnO nanorods are improved.",

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N2 - Fe-doped ZnO nanorods were prepared using an in situ low-temperature hydrothermal synthesis. Fe-doped ZnO nanorods synthesized in the solution containing 30 mM of (CH3CO2)2Fe exhibited a 40% increased IUV/IDLE ratio compared to undoped ZnO nanorods. Oxygen deficiencies were significantly reduced with Fe doping in ZnO nanorods, and Fe was incorporated in ZnO nanostructure in a Fe3+-like state. It is suggested that the addition of Fe3+ into a ZnO nanostructure disturbs the recombination of electrons and holes by bonding with electrons in singly ionized oxygen vacancies. Consequently, green emission is reduced and the optical properties of ZnO nanorods are improved.

AB - Fe-doped ZnO nanorods were prepared using an in situ low-temperature hydrothermal synthesis. Fe-doped ZnO nanorods synthesized in the solution containing 30 mM of (CH3CO2)2Fe exhibited a 40% increased IUV/IDLE ratio compared to undoped ZnO nanorods. Oxygen deficiencies were significantly reduced with Fe doping in ZnO nanorods, and Fe was incorporated in ZnO nanostructure in a Fe3+-like state. It is suggested that the addition of Fe3+ into a ZnO nanostructure disturbs the recombination of electrons and holes by bonding with electrons in singly ionized oxygen vacancies. Consequently, green emission is reduced and the optical properties of ZnO nanorods are improved.

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Improvement of the optical properties of ZnO nanorods by Fe doping

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