Title :
Enhanced ultraviolet emission of ZnO/amorphous ZnO core-shell structure
Author :
Wang, Zhijun ; Li, Shouchun ; Wang, Lianyuan ; Tian, Yunxia ; Liu, Zhen
Author_Institution :
Nat. Lab. of Superhard Mater., Jilin Univ., Changchun, China
Abstract :
The ZnO quantum dots prepared via the solid-state pyrolytic reaction were studied. Our studies revealed the surface of ZnO quantum dots modified by amorphous ZnO. The as prepared quantum dots with sizes varying from 2-3 nm yields a blue shift about 0.15 eV and shows an enhanced ultraviolet emission of 3-5 times over that of high quality ZnO nanoparticles.
Keywords :
II-VI semiconductors; nanoparticles; wide band gap semiconductors; zinc compounds; ZnO; electron volt energy 0.15 eV; enhanced ultraviolet emission; nanoparticles; quantum dots; solid-state pyrolytic reaction; wavelength 2 nm to 3 nm; Amorphous materials; Heat treatment; Nanoparticles; Photoluminescence; Photonic band gap; Quantum dots; Radiative recombination; Solid state circuits; Temperature; Zinc oxide; Amorphous ZnO; Core-shell structure; Photoluminescence; Quantum dots; ZnO;
Conference_Titel :
Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics, 2009. CLEO/PACIFIC RIM '09. Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3829-7
Electronic_ISBN :
978-1-4244-3830-3
DOI :
10.1109/CLEOPR.2009.5292426
