Optical Properties of Silicon Nanoparticles Prepared by Laser Ablation Method in Various Media
Keywords:silicon nanoparticles, pulsed laser ablation, time-dependent photoluminescence spectra
AbstractBright photoluminescent silicon nanoparticles were successfully fabricated from porous silicon target in air and n-hexane using 532 nm line of YAG:Nd pulsed laser. The whole procedure was carried out at room temperature, in atmosphere. The morphology and composition of as-synthesized nanoparticles were characterized by SEM and EDS measurements. Their optical properties were investigated. The PL peak position of the as-synthesized Si nanoparticle ablated in air is slightly blue-shifted in comparison with those ablated in n-hexane, while it was almost no change of peak position of Si nanoparticles fabricated from p-Si in hexane and original p-Si wafer target. In contrast to PL intensity quenching of original p-Si sample and particles produced in air, those produced in n-hexane solvent exhibited an enhancement. The presence of dangling bonds or energy transfer from excited Si particles to oxygen molecules on the surface can be the cause of the quenching effect.
Download data is not yet available.
Metrics Loading ...
How to Cite
Tuan, C. A., Trang, N. T. T., Tu, L. A., Giang, D. T., Duong, P. H., & Huy, P. T. (2014). Optical Properties of Silicon Nanoparticles Prepared by Laser Ablation Method in Various Media. Communications in Physics, 24(3S1), 143–148. https://doi.org/10.15625/0868-3166/24/3S1/5466
LicenseAuthors who publish with CIP agree with the following terms:
- The manuscript is not under consideration for publication elsewhere. When a manuscript is accepted for publication, the author agrees to automatic transfer of the copyright to the editorial office.
- The manuscript should not be published elsewhere in any language without the consent of the copyright holders. Authors have the right to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal’s published version of their work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are encouraged to post their work online (e.g., in institutional repositories or on their websites) prior to or during the submission process, as it can lead to productive exchanges or/and greater number of citation to the to-be-published work (See The Effect of Open Access).