Title :
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
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;
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
DOI :
10.1109/IWPSD.2007.4472681
