TY - GEN
T1 - Local structural properties and growth mechanism of ZnO nanostrcutures
AU - Jeong, Eon Seok
AU - Han, Sang Wook
AU - Vayssieres, Lionel
PY - 2008
Y1 - 2008
N2 - We investigated the growth mechanism of ZnO nanorods using in-situ extended x-ray absorption fine structure (EXAFS). ZnO nanorods were synthesized with a solution method and the structural properties around zinc atoms were measured by the in-situ EXAFS at every process. The synthesis was started with the solution of ZnNO3 powder and H2O. The solution was added with an amino acid complex and then heated up to 80°C. The EXAFS revealed that the zinc atoms of the solution had only two oxygen atoms without any second neighboring atoms, implying that ZnNO3 is amorphous. When the complex was applied to the solution, the second neighboring Zn atoms appeared, although there was a substantial amount of structural disorders existing in the Zn-Zn pairs. This result suggests that the nitrogen ions in the complex play a role in clustering ZnO. At 80°C, ZnO was rapidly crystallized and the structural disorders disappeared. The in-situ EXAFS measurements provided the critical information of ZnO crystallization in the solution.
AB - We investigated the growth mechanism of ZnO nanorods using in-situ extended x-ray absorption fine structure (EXAFS). ZnO nanorods were synthesized with a solution method and the structural properties around zinc atoms were measured by the in-situ EXAFS at every process. The synthesis was started with the solution of ZnNO3 powder and H2O. The solution was added with an amino acid complex and then heated up to 80°C. The EXAFS revealed that the zinc atoms of the solution had only two oxygen atoms without any second neighboring atoms, implying that ZnNO3 is amorphous. When the complex was applied to the solution, the second neighboring Zn atoms appeared, although there was a substantial amount of structural disorders existing in the Zn-Zn pairs. This result suggests that the nitrogen ions in the complex play a role in clustering ZnO. At 80°C, ZnO was rapidly crystallized and the structural disorders disappeared. The in-situ EXAFS measurements provided the critical information of ZnO crystallization in the solution.
UR - https://www.scopus.com/pages/publications/52649094409
U2 - 10.1109/INEC.2008.4585674
DO - 10.1109/INEC.2008.4585674
M3 - Conference paper
AN - SCOPUS:52649094409
SN - 9781424415731
T3 - 2008 2nd IEEE International Nanoelectronics Conference, INEC 2008
SP - 1099
EP - 1101
BT - 2008 2nd IEEE International Nanoelectronics Conference, INEC 2008
T2 - 2008 2nd IEEE International Nanoelectronics Conference, INEC 2008
Y2 - 24 March 2008 through 27 March 2008
ER -