Laser ablation synthesis of Zn/ZnO core-shell nanoparticles

Author

Bajaj, Geetika ; Chaudhary, Ankur ; Naaz, Hera ; Kumar, Brijesh ; Soni, R.K.

Author_Institution

Indian Inst. of Technol. Delhi, New Delhi

fYear

2007

fDate

16-20 Dec. 2007

Firstpage

940

Lastpage

942

Abstract

Zn/ZnO core-shell nanoparticles were synthesized by pulse laser ablation of pure Zn powder in deionised water and aqueous solution of sodium dodecyl sulfate (SDS). The optical absorption spectra show distinct peaks corresponding to the ZnO exciton and Zn metal surface plasmon. These peaks show marked variation with SDS concentration. The High-resolution transmission microscopy (HRTEM) images and optical absorption spectra show laser-induced modification of the nanoparticles size and ZnO shell thickness with SDS concentration.

Keywords

II-VI semiconductors; laser ablation; nanoparticles; particle size; surface plasmons; transmission electron microscopy; zinc; zinc compounds; ZnOZn; core-shell nanoparticles; deionised water; metal surface plasmon; optical absorption spectra; pulse laser ablation; sodium dodecyl sulfate; transmission microscopy; Chemical lasers; Laser ablation; Laser theory; Nanoparticles; Nanostructured materials; Optical materials; Optical pulses; Powders; Surface emitting lasers; Zinc oxide; Laser ablation; core-shell nanoparticles; metal oxide; optical properties;

fLanguage

English

Publisher

ieee

Conference_Titel

Physics of Semiconductor Devices, 2007. IWPSD 2007. International Workshop on

Conference_Location

Mumbai

Print_ISBN

978-1-4244-1728-5

Electronic_ISBN

978-1-4244-1728-5

Type

conf

DOI

10.1109/IWPSD.2007.4472681

Filename

4472681