Article

Study of optical and dielectric properties of annealed ZnO nanoparticles in the terahertz regime

Nankai University Institute of Modern Optics Tianjin 300071 China; Tianjin University Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering Tianjin 300072 China
Optoelectronics Letters 04/2012; 5(6):430-433. DOI:10.1007/s11801-009-9217-1 pp.430-433

ABSTRACT The frequency-dependent optical and dielectric properties of annealed ZnO nanoparticles in the range of 0.1 to 0.9 THz are
studied by using terahertz time-domain spectroscopy (THz-TDS). The refractive index, power absorption and complex dielectric
constants are obtained and the experimental results are well fit with a simple effective medium theory in conjunction with
a pseudo-harmonic model. This study reveals that annealed ZnO nanoparticles exhibit the similar phonon response characteristics
to the single ZnO crystal and other ZnO nanostructures, such as tetrapods and nanowires.

0 0
 · 
0 Bookmarks
 · 
31 Views
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

annealed ZnO nanoparticles
 
annealed ZnO nanoparticles exhibit
 
dielectric properties
 
experimental results
 
nanowires
 
similar phonon response characteristics
 
simple effective medium theory
 
single ZnO crystal
 
THz-TDS
 
ZnO nanostructures