PEG400-assisted thermal decomposition route for synthesis and photoluminescence properties of single-crystal ZnO hexagonal pyramids
(0) Large-scale synthesis of ZnO hexagonal pyramids was achieved by a simple thermal decomposition route of precursor at 240 oC in the presence of PEG400.The precursor was obtained by room-temperature solid-state grinding reaction between Zn(CH3COO)2·2H2O and Na2CO3.Crystal structure and morphology of the products were analyzed and characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM).The results of further experiments showed that PEG400 had an important role in the formation of ZnO hexagonal pyramids.Difference between the single and double hexagonal pyramid may come from the special thermal decomposition reaction.The Photoluminescence (PL) spectra of ZnO hexagonal pyramids exhibit strong near-band-edge emission at ~386 nm and weak green emission at ~550nm.The Raman-active vibration at ~435 cm-1 suggests that the ZnO hexagonal pyramids have high crystallinity.
ZnO hexagonal pyramids thermal decomposition route formation mechanism optical property
Liu Jinsong Wang Liping Zhang Shuo Li Ziquan Chen Jiankang Zhu Kongjun Lu Ting Zhang Jie Wang Chunhua Gao Xueqin
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanj Wuxi Hengye Electrical Heater Equipment Co.Ltd., Wuxi, Jiangsu, 214161 China College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanj State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aerona
国际会议
上海
英文
162-162
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）