An alternative approach for femtosecond laser induced black silicon in ambient air

Ma, Yanxing; Ren, Hai‐Peng; Si, Jinhai; Sun, Xiaoming; Shi, Haitao; Chen, Tao; Chen, Feng; Hou, Xun

doi:10.1016/j.apsusc.2012.08.087

Cited by 34 publications

(11 citation statements)

References 33 publications

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“…Laser ablation in liquids (LAL) methods can provide a green one-step synthesis strategy of graphene nanocomposites [24][25][26][27][28]. Owing to its ultra-short pulse duration and ultra-high peak power [29][30][31][32], when femtosecond laser irradiates on GO aqueous solution containing metal ions, plasma plumes are produced and reactions between these species result in NPs formation, as well as the reduction and doping of GO. Using this method, Tan et al [13] fabricated rGO hybrids decorated with silver (Ag) NPs with nanometre sizes.…”

Section: Introductionmentioning

confidence: 99%

Femtosecond laser-assisted synthesis of silver nanoparticles and reduced graphene oxide hybrid for optical limiting

Yu¹,

Yan²,

Yue³

et al. 2018

R. Soc. open sci.

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Reduced graphene oxide (rGO) functionalized with silver nanoparticles (Ag NPs) is prepared using a femtosecond laser ablation in liquids method. By ablating the mixed aqueous solutions of silver nitrate and graphene oxide (GO) using femtosecond laser pulses, Ag ions and GO are simultaneously reduced and well-dispersed Ag NPs supported on rGO are obtained. The effect of laser power, irritation time and Ag ion concentration on the optical property and morphology of the products are systematically studied. The nonlinear optical responses of the functionalized graphene are studied using a nanosecond Z-scan technique. The rGO hybrid shows an enhanced nonlinear absorption (NLA) effect compared with GO and rGO, and thus exhibits an excellent optical limiting (OL) property with very low activating threshold, which is estimated to be about 0.38 J cm−2. The enhanced NLA effect in rGO hybrids makes it possible to fabricate solid-state optical limiter, improving the practicality of graphene materials in the OL area.

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Section: Introductionmentioning

confidence: 99%

Femtosecond laser-assisted synthesis of silver nanoparticles and reduced graphene oxide hybrid for optical limiting

Yu¹,

Yan²,

Yue³

et al. 2018

R. Soc. open sci.

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“…Silicon is probably the most important material for application such as solar cells, optoelectronic devices, MEMS devices, and other photoelectric devices . For most of these applications, enhanced light collection or antireflection property is essential for efficient performance.…”

Section: Introductionmentioning

confidence: 99%

Enhancing antireflection property of silicon through direct picosecond laser surface texturing

Babu

Duraiselvam

Reddy³

2018

Surface & Interface Analysis

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Crystalline silicon was laser surface textured by picosecond pulsed laser to enhance its antireflection property. The influence of laser scan speed and number of passes in fabricating the uniform surface microtexture were evaluated. Surface texture so generated was investigated and a grid of spherical domes and cavities, with nanoripples in the order of incident laser wavelength spread over it was observed. Reflectivity of bare silicon was greater than 40% and was significantly reduced well below 2% upon laser texturing, over a wavelength range of 400 to 700 nm.Antireflecting surface is an essential requirement for more efficient performance of devices for optical and photovoltaic application.

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“…In our formulation, depositing thin film on silicon nanostructured surface would naturally form a layer containing the same pattern of the underlying nanostructures. And these nanostructures can be prepared through several approaches including femtosecond laser irradiation [10], chemical etching [11] and reactive ion etching [12]. Similar system on the front surface has been fabricated for anti-reflection, comprising of amorphous silicon (a-Si) nanograss layer on top of silicon nanofrustums [13].…”

Section: Introductionmentioning

confidence: 99%

Band engineering of amorphous silicon ruthenium thin film and its near-infrared absorption enhancement combined with nano-holes pattern on back surface of silicon substrate

Guo

Zhong

et al. 2016

Applied Surface Science

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Silicon is widely used in semiconductor industry but has poor performance in near-infrared photoelectronic devices because of its bandgap limit. In this study, a narrow bandgap silicon rich semiconductor is achieved by introducing ruthenium (Ru) into amorphous silicon (a-Si) to form amorphous silicon ruthenium (a-Si 1-x Ru x) thin films through co-sputtering. The increase of Ru concentration leads to an enhancement of light absorption and a narrower bandgap. Meanwhile, a specific light trapping technique is employed to realize high absorption of a-Si 1-x Ru x thin film in a finite thickness to avoid unnecessary carrier recombination. A double-layer absorber comprising of a-Si 1-x Ru x thin film and silicon random nano-holes layer is formed on the back surface of silicon substrates, and significantly improves near-infrared absorption while the leaky light intensity is less than 5%. This novel absorber, combining narrow bandgap thin film with light trapping structure, may have a potential application in near-infrared photoelectronic devices. Keywords a-Si 1-x Ru x thin films; bandgap; near-infrared; nano-holes; light absorption

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An alternative approach for femtosecond laser induced black silicon in ambient air

Cited by 34 publications

References 33 publications

Femtosecond laser-assisted synthesis of silver nanoparticles and reduced graphene oxide hybrid for optical limiting

Femtosecond laser-assisted synthesis of silver nanoparticles and reduced graphene oxide hybrid for optical limiting

Enhancing antireflection property of silicon through direct picosecond laser surface texturing

Band engineering of amorphous silicon ruthenium thin film and its near-infrared absorption enhancement combined with nano-holes pattern on back surface of silicon substrate

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