Morphology-Graded Silicon Nanowire Arrays via Chemical Etching: Engineering Optical Properties at the Nanoscale and Macroscale

ACS Applied Materials & Interfaces
Fedja J WendischGilles R Bourret

Abstract

We report on a quick, simple, and cost-effective solution-phase approach to prepare centimeter-sized morphology-graded vertically aligned Si nanowire arrays. Gradients in the nanowire diameter and shape are encoded through the macroscale substrate via a "dip-etching" approach, where the substrate is removed from a KOH etching solution at a constant rate, while morphological control at the nanowire level is achieved via sequential metal-assisted chemical etching and KOH etching steps. This combined approach provides control over light absorption and reflection within the nanowire arrays at both the macroscale and nanoscale, as shown by UV-vis spectroscopy and numerical three-dimensional finite-difference time-domain simulations. Macroscale morphology gradients yield arrays with gradually changing optical properties. Nanoscale morphology control is demonstrated by synthesizing arrays of bisegmented nanowires, where the nanowires are composed of two distinct segments with independently controlled lengths and diameters. Such nanowires are important to tailor light-matter interactions in functional devices, especially by maximizing light absorption at specific wavelengths and locations within the nanowires.

References

Jul 13, 2004·Physical Review Letters·Xinyuan ZhaoM Y Chou
Jan 27, 2007·Science·Alexander SidorenkoJoanna Aizenberg
Feb 17, 2007·Nano Letters·Nicolas VerplanckRabah Boukherroub
May 23, 2007·Journal of the American Chemical Society·Woong KimPeidong Yang
Jan 30, 2010·Nano Letters·Erik Garnett, Peidong Yang
Sep 23, 2010·Advanced Materials·Zhipeng HuangUlrich Gösele
Mar 19, 2011·Nano Letters·Kwanyong SeoKenneth B Crozier
Mar 6, 2012·ACS Nano·Sabrina M WellsMichael J Sepaniak
May 2, 2012·Nano Letters·Sangmoo JeongYi Cui
Jul 18, 2012·Journal of the American Chemical Society·Matthew T MayerDunwei Wang
Oct 9, 2012·Optics Letters·Baomin Wang, Paul W Leu
Nov 28, 2013·Nano Letters·Joseph D ChristesenJames F Cahoon
May 20, 2015·Nature Nanotechnology·Hele SavinRamon Alcubilla
May 21, 2015·Nature Chemistry·Tracy L Lohr, Tobin J Marks
Aug 5, 2015·Nature Communications·Martín CaldarolaStefan A Maier
Mar 29, 2016·Nature Nanotechnology·Yude SuPeidong Yang
Jul 28, 2016·ACS Nano·Julien ProustNicolas Bonod
Jan 18, 2017·ACS Applied Materials & Interfaces·Fedja J WendischGilles R Bourret
May 12, 2017·Nano Letters·Chenlu XiePeidong Yang
Dec 20, 2017·Nano Letters·Wonjong KimAnna Fontcuberta I Morral
Jul 19, 2018·Nature Communications·Seokhyoung KimJames F Cahoon
Oct 6, 2018·ACS Omega·Jo Sing Julia TangNicolas Vogel
Oct 26, 2018·Nano Letters·Fedja J WendischGilles R Bourret
Mar 25, 2019·Nature Biomedical Engineering·Yuanwen JiangBozhi Tian
Oct 28, 2019·Nature Reviews. Materials·Yuanwen Jiang, Bozhi Tian

❮ Previous
Next ❯

Citations

Jul 30, 2020·Micromachines·Sehui ChangYoung Min Song
Feb 7, 2021·Nanomaterials·Antonio Alessio LeonardiAlessia Irrera
Jul 3, 2021·Nanoscale Advances·Marcel ReyNicolas Vogel
Nov 11, 2020·ACS Applied Materials & Interfaces·Fedja J WendischGilles R Bourret
Aug 19, 2020·ACS Applied Materials & Interfaces·Ankitha E Bangera, Kumar Appaiah
Nov 17, 2020·Chemistry of Materials : a Publication of the American Chemical Society·Fedja J WendischGilles R Bourret
Aug 28, 2021·Nanomaterials·Antonio Alessio LeonardiAlessia Irrera

❮ Previous
Next ❯

Methods Mentioned

BETA
electron-beam lithography
colloidal lithography
optical microscopy
scanning electron microscopy

Software Mentioned

MACE

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.