Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Technol, Beijing 100083, Peoples R China
; Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China
; Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China
; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
Small-diameter ZnO nanorods (similar to 10 nm) with lengths of 80-100 nm were synthesized by a simple solution route at low temperature (61.2 degrees C). X-ray diffraction and high-resolution transmission electron microscopy analyses confirmed that the nanorods are hexagonal single crystals with a growth direction along . Room temperature photoluminescence (PL) measurement showed a strong ultraviolet (UV) emission peak at 382 nm with weak deep level emission. Quantum confinement effect in the ZnO nanorods was clearly revealed by low temperature PL. The complex origin of the UV peak has been discussed based on the temperature-dependent photoluminescence measurements. (c) 2006 American Institute of Physics.