Optical Properties of Black Silicon: An Analysis

Marthi, Sita Rajyalaxmi; Sekhri, Suramya; Ravindra, Nuggehalli M.

doi:10.1007/s11837-015-1527-0

Cited by 18 publications

(9 citation statements)

References 24 publications

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“…Then hydrofluoric acid etches SiO2 to form it. In 2015, S. Marthi et al [57] fabricated black silicon by MACE, and the researchers studied the effects of metal-assisted chemical etching at different times and substrate thickness on the optical properties of the material. The results express that the longer the time from 20 s to 180 s, The researchers not only used MACE to fabricate black silicon, but also explored the optimization of the preparation process [46] through experiments.…”

Section: Metal Assisted Chemical Etchingmentioning

confidence: 99%

Recent Progress of Black Silicon: From Fabrications to Applications

et al. 2020

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Since black silicon was discovered by coincidence, the special material was explored for many amazing material characteristics in optical, surface topography, and so on. Because of the material property, black silicon is applied in many spheres of a photodetector, photovoltaic cell, photo-electrocatalysis, antibacterial surfaces, and sensors. With the development of fabrication technology, black silicon has expanded in more and more applications and has become a research hotspot. Herein, this review systematically summarizes the fabricating method of black silicon, including nanosecond or femtosecond laser irradiation, metal-assisted chemical etching (MACE), reactive ion etching (RIE), wet chemical etching, electrochemical method, and plasma immersion ion implantation (PIII) methods. In addition, this review focuses on the progress in multiple black silicon applications in the past 10 years. Finally, the prospect of black silicon fabricating and various applications are outlined.

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Section: Metal Assisted Chemical Etchingmentioning

confidence: 99%

Recent Progress of Black Silicon: From Fabrications to Applications

et al. 2020

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“… 24 The micro- or nanostructured surface on BSi promotes light scattering and absorption as well as reduces reflection losses; thus the surface of BSi appears black. 25 BSi is therefore highly useful in a wide range of fields spanning from sensing and catalysis to optoelectronic applications, and it is particularly popular in solar cell technology. 26 Conventional BSi production methods report the use of laser irradiation, metal-assisted chemical etching, wet etching such as HF etching, and RIE used herein among other methods.…”

Section: Introductionmentioning

confidence: 99%

Room Temperature Fabrication of Macroporous Lignin Membranes for the Scalable Production of Black Silicon

et al. 2022

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Rising global demand for biodegradable materials and green sources of energy has brought attention to lignin. Herein, we report a method for manufacturing standalone lignin membranes without additives for the first time to date. We demonstrate a scalable method for macroporous (∼100 to 200 nm pores) lignin membrane production using four different organosolv lignin materials under a humid environment (>50% relative humidity) at ambient temperatures (∼20 °C). A range of different thicknesses is reported with densely porous films observed to form if the membrane thickness is below 100 nm. The fabricated membranes were readily used as a template for Ni 2+ incorporation to produce a nickel oxide membrane after UV/ozone treatment. The resultant mask was etched via an inductively coupled plasma reactive ion etch process, forming a silicon membrane and as a result yielding black silicon (BSi) with a pore depth of >1 μm after 3 min with reflectance <3% in the visible light region. We anticipate that our lignin membrane methodology can be readily applied to various processes ranging from catalysis to sensing and adapted to large-scale manufacturing.

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“…Recently, techniques based on reactive ion etching (RIE) and metal catalyzed chemical etching (MCCE) have been developed. Nevertheless, they also have some problems, such as costly facility, required operational conditions, and wasted liquid that may be harmful to the natural environment [ 37 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 ]. An appealing technique is that of directly ablating silicon surface to obtain “penguin-like” microstructures via femtosecond lasering in toxic gas atmospheres such as SF 6 , Cl 2 , and H 2 S [ 51 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 ].…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Self-Similar Hierarchical Micro-Nano Structures for Multifunctional Surfaces via Solvent-Assisted UV-Lasering

Zhang

Qin

et al. 2020

Micromachines

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Cross-scale self-similar hierarchical micro–nano structures in living systems often provide unique features on surfaces and serve as inspiration sources for artificial materials or devices. For instance, a highly self-similar structure often has a higher fractal dimension and, consequently, a larger active surface area; hence, it would have a super surface performance compared to its peer. However, artificial self-similar surfaces with hierarchical micro–nano structures and their application development have not yet received enough attention. Here, by introducing solvent-assisted UV-lasering, we establish an elegant approach to fabricate self-similar hierarchical micro–nano structures on silicon. The self-similar structure exhibits a super hydrophilicity, a high light absorbance (>90%) in an ultra-broad spectrum (200–2500 nm), and an extraordinarily high efficiency in heat transfer. Through further combinations with other techniques, such surfaces can be used for capillary assembling soft electronics, surface self-cleaning, and so on. Furthermore, such an approach can be transferred to other materials with minor modifications. For instance, by doping carbon in polymer matrix, a silicone surface with hierarchical micro–nano structures can be obtained. By selectively patterning such hierarchical structures, we obtained an ultra-high sensitivity bending sensor. We believe that such a fabrication technique of self-similar hierarchical micro–nano structures may encourage researchers to deeply explore the unique features of functional surfaces with such structures and to further discover their potentials in various applications in diverse directions.

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Optical Properties of Black Silicon: An Analysis

Cited by 18 publications

References 24 publications

Recent Progress of Black Silicon: From Fabrications to Applications

Recent Progress of Black Silicon: From Fabrications to Applications

Room Temperature Fabrication of Macroporous Lignin Membranes for the Scalable Production of Black Silicon

Facile Fabrication of Self-Similar Hierarchical Micro-Nano Structures for Multifunctional Surfaces via Solvent-Assisted UV-Lasering

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