کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1617251 | 1005681 | 2011 | 4 صفحه PDF | دانلود رایگان |
We present here the results on the preparation and characterization of highly oriented ZnO microrods fabricated on SiC substrate via a vapor solid route. These ZnO microrods grow along the c-axis perpendicularly to the substrate and are well separated from each other. Photoluminescence (PL) due to the band-gap emission (centered at 380 nm) and defect-related deep band emission (centered at 530 nm) were observed. Tunable PL intensities of these two bands were achieved by acid etching for varying durations.
► This paper describes a procedure for catalyst-free synthesis of ZnO microrods using a CVD method.
► Such a technique is of interest since it is a bottom-up procedure for micro- and possibly nano-sized growth.
► The PL intensities of the ZnO microrods can be tuned by acid etching which provides useful information for optical applications of ZnO material.
Journal: Journal of Alloys and Compounds - Volume 509, Issue 24, 16 June 2011, Pages 6942–6945