Gas Sensor of Au/AgNPs/PSi/c-Si Using Pulsed Laser Ablation Using a YAG: Nd Laser
International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
www.ijsr.net | Open Access | Fully Refereed | Peer Reviewed International Journal

ISSN: 2319-7064



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Research Paper | Physics Science | Iraq | Volume 3 Issue 10, October 2014

Gas Sensor of Au/AgNPs/PSi/c-Si Using Pulsed Laser Ablation Using a YAG: Nd Laser

Wisam J.Aziz, Sabah J. Mezher, Saad N. Ibrahim

Pulsed laser ablation in liquid was employed to synthesize silver nanopartical (Ag). Silver nanoparticles are synthesized by pulsed laser ablation of high purity zinc target in double distilled water with 36.924 J/cm2laser fluencies at RT. UVvisible absorption and transmission electron microscope are used for the characterization of silver nanopartical (NPs). The optical properties, size, and the morphology of the synthesized silver nanopartical were influenced strongly by laser fluence and wavelength. The use of water gave spherical silver nanopartical NPs with average size 16 nm. The absorbance spectrum of the silver nanoparticles solution displays a quasisymmetric absorption band centered at 417 nm, which indicates that the nanoparticles in the growth solution are quasispherical approximately 8 nm in size. The silver nanoparticles, was faint yellow in color. It is expected, that the obtained results will find applications in the synthesis of new materials with modified properties, in the fabrication of catalysts with optimized selectivity and efficiency, in medicine for preparation of nanoparticle-based probes with great potential for targeting, imaging and treating different diseases etc. Chemical interaction between the (100-400 ppm) vapor methanol gas and Au/Ag NPs/p-PSi/c-Si device surface caused to some of variations in the output signal recorded as resistance decrease of device at room temperature.

Keywords: Ag nanoparticle, SEM, Gas sensor, PSi

Edition: Volume 3 Issue 10, October 2014

Pages: 1442 - 1445

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How to Cite this Article?

Wisam J.Aziz, Sabah J. Mezher, Saad N. Ibrahim, "Gas Sensor of Au/AgNPs/PSi/c-Si Using Pulsed Laser Ablation Using a YAG: Nd Laser", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=OCT14528, Volume 3 Issue 10, October 2014, 1442 - 1445

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