TY - JOUR
T1 - Synthesis and structyre-property correlation in shape-controlled ZnO nanoparticles prepared by chemical vapor synthesis and their application in dye-sensitized solar cells
AU - Bacsa, Revathi R.
AU - Dexpert-Ghys, Jeannette
AU - Verelst, Marc
AU - Falqui, Andrea
AU - Machado, Bruno
AU - Bacsa, Wolfgang S.
AU - Chen, Peter
AU - Zakeeruddin, Shaik M.
AU - Graetzel, Michael
AU - Serp, Philippe
PY - 2009/3/24
Y1 - 2009/3/24
N2 - Here, the large scale synthesis of nanocrystalline ZnO spheres and tetrapods in the size range of 8-40 nm by chemicai vapor synthesis using zinc metal as precursor is described. A detailed study of the effect of experimental parameters on the morphology and yield is presented. High-resolution transmission electron microscopy images of the tetrapods show trust they are formed by the self assembly of four nanorods in the vapor phase. The tetrapods have optical absorption coefficients that are one order of magnitude greater than the spheres and show intense UV luminescence whereas the spheres show only the green emission. The observed differences in the optical properties are related to the presence of surface defects present in the nanospheres. The tetrapods have increased effciencies for application in dye sensitized solar ceils when compared to spheres.
AB - Here, the large scale synthesis of nanocrystalline ZnO spheres and tetrapods in the size range of 8-40 nm by chemicai vapor synthesis using zinc metal as precursor is described. A detailed study of the effect of experimental parameters on the morphology and yield is presented. High-resolution transmission electron microscopy images of the tetrapods show trust they are formed by the self assembly of four nanorods in the vapor phase. The tetrapods have optical absorption coefficients that are one order of magnitude greater than the spheres and show intense UV luminescence whereas the spheres show only the green emission. The observed differences in the optical properties are related to the presence of surface defects present in the nanospheres. The tetrapods have increased effciencies for application in dye sensitized solar ceils when compared to spheres.
UR - http://www.scopus.com/inward/record.url?scp=63849211956&partnerID=8YFLogxK
U2 - 10.1002/adfm.200801049
DO - 10.1002/adfm.200801049
M3 - Article
AN - SCOPUS:63849211956
SN - 1616-301X
VL - 19
SP - 875
EP - 886
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 6
ER -