| Autor: |
Hamood, Mahmood Ahmed, Ali, Ghazwan Ghazi, Abed, Mazin Ahmed |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2839 Issue 1, p1-11, 11p |
| Abstrakt: |
This paper provides some new insights into the gold nanoparticles on porous silicon formation and characterization. The porous silicon was prepared by Photo electrochemical etching method of n-type silicon wafer with orientation (100), resistivity (1.5-4 Ω.cm) and current density at 35 mA/cm2. This process involves using HF solution of 16% concentration at etching time 10 min and photo source of 100 m W/cm2. The laser ablation was carried out in this study in order to produce the gold nanoparticles using laser energy (300,400 and 500 m J). We have studied of surface properties of the prepared AuNPs/PSi samples by scanning electron microscope SEM and EDS analysis. The results showed of AuNPs/PSi heterojunction that the growth of the gold nanoparticles on porous silicon substrate have uniform and homogenous distribution and the formation of quasi-spherical AuNPs with a average dimeter of approximately 10 to 33 nm. Furthermore, the atoms ratio of gold nanoparticles increases with laser energy. The maximum value of Au atoms on porous silicon layer was found to be about0.94% atom at 500 mJ while the minimum values were found to be about 0.3%, 0.61% atom at 300mJ.and 4000mJ respectively. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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