Photoluminescence of ZnO Nanoparticles Prepared by Laser Ablation in Different Surfactant Solutions
- 10 December 2004
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry B
- Vol. 109 (1) , 120-124
Abstract
ZnO nanoparticles were prepared by laser ablation of a zinc metal plate in a liquid environment using different surfactant (cationic, anionic, amphoteric, and nonionic) solutions. The nanoparticles were obtained in deionized water and in all surfactant solutions except the anionic surfactant solution. The average particle size and the standard deviation of particle size decreased with increasing amphoteric and nonionic surfactant concentrations. With the increase of the amphoteric surfactant concentration, the intensity of the defect emission caused by oxygen vacancies of ZnO rapidly decreased, while the exciton emission intensity increased. This indicates that anionic oxygen in the amphoteric surfactant molecules effectively occupied the oxygen vacancy sites at the ZnO nanoparticle surface due to charge matching with the positively charged ZnO nanoparticles.Keywords
This publication has 27 references indexed in Scilit:
- Blue luminescent center in ZnO films deposited on silicon substratesOptical Materials, 2004
- Laser Ablation Synthesis of Spindle-like Gallium Oxide Hydroxide Nanoparticles with the Presence of Cationic Cetyltrimethylammonium BromideThe Journal of Physical Chemistry B, 2004
- Preparation of Layered Zinc Hydroxide/Surfactant Nanocomposite by Pulsed-Laser Ablation in a Liquid MediumChemistry of Materials, 2004
- Selective laser fabrication of small nanoparticles and nano-networks in solution by irradiation of UV pulsed laser onto platinum nanoparticlesChemical Physics Letters, 2004
- Synthesis of Ultrafine SnO2-x Nanocrystals by Pulsed Laser-Induced Reactive Quenching in Liquid MediumThe Journal of Physical Chemistry B, 2003
- Formation of ZnSe and CdS quantum dots via laser ablation in liquidsChemical Physics Letters, 2002
- Laser ablation method: use of surfactants to form the dispersed Ag nanoparticlesColloids and Surfaces A: Physicochemical and Engineering Aspects, 2002
- Nanometer-sized semiconductor clusters: materials synthesis, quantum size effects, and photophysical propertiesThe Journal of Physical Chemistry, 1991
- Surface tension of solutions of pure sodium dodecyl sulfateLangmuir, 1986
- Surface-Active Betaines: N-Alkyl-Nn-Dimethylglycines and Their Critical Micelle ConcentrationsJournal of Pharmacy and Pharmacology, 1963