Structural and photoluminescence of Mn-doped ZnO single-crystalline nanorods grown via solvothermal method

• Published in: Colloids and surfaces. A, Physicochemical and engineering aspects Vol. 349; no. 1; pp. 202 - 206
• Main Authors: Li, Jin, Fan, Huiqing, Chen, Xiaopeng, Cao, Zhiyi
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 05.10.2009; Elsevier
• Subjects: Chemistry; Colloidal state and disperse state; Exact sciences and technology; General and physical chemistry; Mn-doped ZnO; Nanorod; Photoluminescence; Solvothermal; Surface physical chemistry; Solvothermal; Mn-doped ZnO; Nanorod; Photoluminescence; Composition; Binary compound; High resolution; Growth; Rod; Transition element compounds; Doping; Ions; X ray diffraction; Transmission electron microscopy; Dynamics; Morphology; Optical properties; Defect; Low temperature
• ISSN: 0927-7757; 1873-4359
• DOI: 10.1016/j.colsurfa.2009.08.019

Mn-doped ZnO nanorods (composition: Mn 0.046Zn 0.954O) were grown by a simple solvothermal technique. The morphological, structural and optical properties of the as-prepared nanorods were investigated by means of transmission electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, and photoluminescence. The results showed that the sample had rod-like morphology and that the preferential growth direction was along the c-axis. The doping of Mn 2+ ions has significant influences on the optical properties of ZnO nanorods. Low-temperature photoluminescence spectra of Mn-doped ZnO nanorods exhibit a strong near band-edge emission at 370.8 nm and a weak deep-level emission around 525 nm, indicating the concentrations of the defects responsible for deep-level emissions are reduced on doping. The dynamic process of the UV emission for Mn-doped ZnO nanorods was discussed.