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Brown and black silicon nanoparticles are

high-purity, ultra-fine powders (typically 1–200 nm) that exhibit distinct physical, chemical, and optical properties compared to bulk silicon. Their unique properties—including high absorption across a wide spectral range and high lithium-ion storage capacity—make them essential in advanced technology applications.

Appearance & Synthesis: These nanoparticles appear as brown, dark brown, or black powders depending on their particle size and manufacturing process (typically physical milling or chemical vapor deposition - CVD).
Black Silicon Nanoparticles: Known for having a highly structured surface (like a "forest of cones") that traps light, allowing them to absorb90% to nearly 100% of light in the 1100 nm to 2500 nm range.
Biodegradable Black Silicon: Mesoporous silicon nanoparticles are often engineered for biomedical applications, showing high photothermal conversion efficiency (33.4%) for cancer treatment.

Lithium-Ion Battery Anodes: Silicon nanoparticles are widely used to replace graphite in Li-ion batteries, offering higher capacity and enhanced cycle life by accommodating volume expansion, often used as Si-C composites.
Optoelectronics & Solar Energy: Due to their low reflectance and high absorption of sunlight, black silicon nanoparticles are used in solar cells and photodiodes.
Biomedical & Therapeutic: Biodegradable black silicon nanoparticles are used in photothermal cancer therapy, converting infrared light into heat for targeted treatment.
Electronics & Sensors: Their size-dependent electronic properties allow use in nanoscale transistors and fluorescent sensors for biological or environmental detection.

Scalable Synthesis of Biodegradable Black Mesoporous Silicon ...
A scalable and high-yield method was developed to produce black mesoporous silicon nanoparticles with an exceptional ability to ab...
National Institutes of Health (NIH) | (.gov)
Silicon Nanoparticles A150 (150nm)
Catalog Number: NovaNP-Si-A150 Average Diameter: ~150nm Appearance: dry brown powder These silicon nanoparticles are prepared by a...
Google
Review Application of Nanostructured Black Silicon - PMC
Apr 19, 2018 — Abstract. As a widely used semiconductor material, silicon has been extensively used in many areas, such as photodiode, photodetec...
National Institutes of Health (NIH) | (.gov)

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Silicon Powder 30-50nm 100-200nm - Nanomaterial ...

Hongwu International Group Ltd

https://www.hwnanomaterial.com › silicon-powder-30-...

Hongwu International Group Ltd

https://www.hwnanomaterial.com › silicon-powder-30-...

Silicon nanoparticles could supply in 100nm or 200nm with 99.9% purity, brown black powder, widely used in high temperature coatings. silicon nanopowders 100- ...Read more

Silicon Nanoparticles / Si Nanopowder 15wt% Toluene ...

US-Nano.com

https://www.us-nano.com › inc › sdetail

US-Nano.com

https://www.us-nano.com › inc › sdetail

The Silicon Si Nanoparticle possesses high purity, narrow range particle size distribution, good activity and large specific surface area. The Silicon Si ...Read more

$26.00$25 delivery

Scalable Synthesis of Biodegradable Black Mesoporous ...

ACS Publications

https://pubs.acs.org › doi

ACS Publications

https://pubs.acs.org › doi

Jun 15, 2018 — In the present study, biodegradable black PSi (BPSi) nanoparticles were designed and prepared via a high-yield and simple reaction.Read more

Recent Progress of Black Silicon: From Fabrications to ... - PMC

National Institutes of Health (.gov)

https://pmc.ncbi.nlm.nih.gov › articles › PMC7823726

National Institutes of Health (.gov)

https://pmc.ncbi.nlm.nih.gov › articles › PMC7823726

by Z Fan2020Cited by 120 — The main methods used to deposit metal nanoparticles are thermal evaporation, post-coating heat treatment, and chemical solution formation. Then, the MACE ...Read more

Missing: ~~brown~~ ‎| Show results with: brown

Silicon (Si) Nanopowder/Nanoparticles, Purity: 99.99+%, ...

Nanographenex

https://nanographenex.com › amorphous-silicon-si-nan...

Nanographenex

https://nanographenex.com › amorphous-silicon-si-nan...

With a particle size of approximately 100 nm and purity exceeding 99.99%, this dark brown powder is ideal for advanced applications in semiconductors, batteries ...Read more

£200.00

Black silicon nanostructures for solar energy conversion ...

SPIE Digital Library

https://www.spiedigitallibrary.org › 1.AP.7.3.034004.full

SPIE Digital Library

https://www.spiedigitallibrary.org › 1.AP.7.3.034004.full

by H Jia2025Cited by 8 — This review explores b-Si comprehensively, discussing its fabrication processes, distinctive properties, and contributions to both solar energy conversion and ...Read more

Missing: ~~brown~~ ‎| Show results with: brown

Silicon (Si) Nanopowder/Nanoparticles, Purity: 99.9%, Size

Nanografi

https://shop.nanografi.com › ... › Silicon Nanoparticles

Nanografi

https://shop.nanografi.com › ... › Silicon Nanoparticles

The fine yellow-brown powder is highly versatile, supporting integration into electronic, energy, and composite systems. With their nanoscale dimensions and ...Read more

€175.00In stock7–11 day delivery

Nanostructured Black Silicon

AZoNano

https://www.azonano.com › article

AZoNano

https://www.azonano.com › article

Sep 18, 2014 — Black silicon has the power to absorb solar energy under most circumstances such as early morning, late evening, and cloudy days, which is not ...Read more

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