Improvement of the optical properties of ZnO nanorods by Fe doping

• Published in: Physica. B, Condensed matter Vol. 399; no. 2; pp. 101 - 104
• Main Authors: Baek, Seonghoon, Song, Jaejin, Lim, Sangwoo
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.11.2007; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Doping; Exact sciences and technology; Nanorod; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures; Optical property; Physics; ZnO; ZnO; Optical property; Nanorod; Doping; 78.67.−n; Electron-hole recombination; Vacancies; Photoluminescence; 78.67.-n; Zinc oxides; Hydrothermal synthesis; Ionization; Charge carrier recombination; Optical properties; Iron additions; ZnO; Nanorod; Doping; Optical property; Nanostructured materials
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2007.05.030

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 (CH 3CO 2) 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 Fe 3+-like state. It is suggested that the addition of Fe 3+ 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.