Controlled growth and photoluminescence of highly oriented arrays of ZnO nanocones with different diameters  

作　　者：MA JunHu YANG HeQing SONG YuZhe LI Li XIE XiaoLi LIU RuiNi WANG LinFang 

机构地区：[1]Key Laboratory of Macromolecular Science of Shaanxi Province,School of Chemistry and Materials Science,Shaanxi Normal University,Xi’an 710062,China

出　　处：《Science China(Technological Sciences)》2009年第5期1264-1272,共9页中国科学（技术科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 20573072);Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20060718010)

摘　　要：Large-scale oriented ZnO nanocone arrays were directly grown on zinc substrate through a hydrothermal reaction of Zn foil with aqueous butylamine solution (3 mol/L) at 100–180 °C for 12 h. The synthesized products were characterized with X-ray diffraction, Raman spectrum, scanning electron microscopy and transmission electron microscopy. The results showed that the ZnO nanocones were single crystalline with the wurtzite structure and grown along the [0001] direction. The diameter of nanocones is decreased with increasing the reaction temperature. A possible growth mechanism was also proposed to account for the formation of the ZnO nanocone arrays. The photoluminescence spectra of the ZnO nanocone arrays were studied at room temperature, two UV emission bands at 377 and 396 nm assigned to free exciton emission and exciton-exciton collision, respectively, and phonon replicas associated with 2-E2 phonon were observed in the PL spectra.

关 键 词：ZNO ZNO NANOCONE ARRAYS BUTYLAMINE PHOTOLUMINESCENCE 

分 类 号：TB383.1[一般工业技术—材料科学与工程]