Laser on porous silicon after oxidation by irradiation and annealing

Huang, Weiqi; Zhang, Rong-Tao; Wang, Hai-Xu; Jin, Feng; Li, Xu; Qin, Shuijie; Wu, Keyue; Liu, Shirong; Qin, Cao-Jian

doi:10.1016/j.optcom.2008.07.034

Cited by 16 publications

(8 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, epitaxial core-shell structures similar in quality to those achievable in the II-VI compound QDs are not yet known; therefore, the Si-QD interface can have a substantial influence on the luminescent properties [7][8][9][10]. In particular, the nature of the Si/SiO 2 interface is thought to play an important role in producing the typical red luminescence demonstrated by oxide-embedded Si-QD nanocomposites [5,7,11].…”

Section: Introductionmentioning

confidence: 99%

Photoactivation of silicon quantum dots

Lockwood

McFarlane

Núñez

et al. 2011

Journal of Luminescence

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Photoactivation of silicon quantum dots

Lockwood

McFarlane

Núñez

et al. 2011

Journal of Luminescence

View full text Add to dashboard Cite

“…5(c), the band of the fit peak 3 is broader (from 550 nm to 830 nm), related to the range of the nanoparticles size (about 1.7 nm∼4 nm), in which the QC effect plays a main role. [20] The peak 3 is very good for Gaussian fit because of its random process in distribution of the nanoparticles size, and its intensity is weaker due to the spontaneous emission. [21] But the peak 1 and peak 2 are suitable for Lorenz fit due to their localized states emission.…”

Section: Experiments and Resultsmentioning

confidence: 97%

Plasma induced by pulsed laser and fabrication of silicon nanostructures

et al. 2015

View full text Add to dashboard Cite

It is interesting that in preparing process of nanosilicon by pulsed laser, the periodic diffraction pattern from plasmonic lattice structure in the Purcell cavity due to interaction between plasmons and photons is observed. This kind of plasmonic lattice structure confined in the cavity may be similar to the Wigner crystal structure. Emission manipulation on Si nanostructures fabricated by the plasmonic wave induced from pulsed laser is studied by using photoluminescence spectroscopy. The electronic localized states and surface bonding are characterized by several emission bands peaked near 600 nm and 700 nm on samples prepared in oxygen or nitrogen environment. The electroluminescence wavelength is measured in the telecom window on silicon film coated by ytterbium. The enhanced emission originates from surface localized states in band gap due to broken symmetry from some bonds on surface bulges produced by plasmonic wave in the cavity.

show abstract

“…Porous structures covered by oxide films have already been fabricated on silicon targets employing laser irradiation (17). Laser heating effect in some of the cases is very similar to annealing and causes surface oxidation (18).…”

Section: Resultsmentioning

confidence: 99%

Laser shots impact on geometry of crater evolution at copper surface

Latif

Khaleeq-ur-Rahman

Rafique

et al. 2012

Radiation Effects and Defects in Solids

View full text Add to dashboard Cite

Fine polished 4N (99.99%) pure copper samples are irradiated in ambient air using Q-Switched Nd:YAG Laser (10 mJ, 9-12 ns, 1064 nm). The laser energy density and spot size at tight focus are 3 × 10 11 W/cm 2 and ∼12 μm, respectively. The laser-produced crater is analyzed considering its dimensional changes with the increase in laser shots employing optical microscopy. The width of the crater (along horizontal) increases, thereby exhibiting its exponential trend. The length along the vertical and the depth of the crater both increase exponentially. The heat-affected zone expands exponentially as well. Hydrodynamics and exfoliation are the two main dominant observed ablation mechanisms.

show abstract

Laser on porous silicon after oxidation by irradiation and annealing

Cited by 16 publications

References 10 publications

Photoactivation of silicon quantum dots

Photoactivation of silicon quantum dots

Plasma induced by pulsed laser and fabrication of silicon nanostructures

Laser shots impact on geometry of crater evolution at copper surface

Contact Info

Product

Resources

About