Journal of the Korean Physical Society

pISSN 0374-4884 eISSN 1976-8524


Condensed Matter

J. Korean Phy. Soc. 2011; 59(1): 60-64

Published online July 15, 2011

Copyright © The Korean Physical Society.

Structural Characterization of CVD-grown ZnO Nanocombs

Long The Phan, Yuekui Sun, R. Vincent


We present the growth of ZnO nanocombs by using chemical vapor deposition (CVD) under atmospheric pressure. Two types of single- and double-side teethed nanocombs have been obtained. Structural analyses based on electron microscopy reveal the diameter and the period of teeth to be about 50 nm and 75 - 100 nm, respectively, while the length of the comb ribbons is 7 - 10 ¥ìm. For the single-teethed type, the entire nanocomb is a single crystal with the teeth grown along the [0001] direction, and the comb ribbon grown along the [10-10] direction. For double-side teethed nanocombs, they are twin crystals with twin boundaries of {10-13}. The comb ribbons grow along the directions of <10-11> while the teeth grow along the [0001] direction. With the results obtained, we believe that the growth of nanocombs follows the vapour-solid process. Studies of the optical properties basing on photoluminescence and Raman spectroscopy have indicated that the ZnO nanocombs have good crystal quality.

Keywords: , , , Crystal structure, ZnO nanocombs, Optical properties