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Bismuth Sulfide (Bi2S3) Powders and Crystal

CAS Number 1345-07-9

2D Semiconductor Materials, Low Dimensional Materials

Product Code M2205D1-5g
Price $250 ex. VAT

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Low price, high purity 2D metal bismuth sulfide powder and crystals

For the development of next-generation electronics, optoelectronics, and nanotechnology

Bismuth sulfide (Bi2S3, also known as bismuth(III) sulfide or bismuth trisulfide) belongs to group 15 (VA) post-transition metal trichalcogenides (TMTCs). Orthorhombic structured bismuth sulfide (Bi2S3) is a non-toxic n-type semiconductor material containing environmentally benign elements bismuth and sulfur. Stoichiometric Bi2S3 has a layered structure form of atomic scale ribbons which are bound by van der Waals forces. The structure of Bi2S3 favours the formation of one-dimensional nanostructures such as nano-wires, rods, tubes and ribbons.

Ultralong nanoribbons with lengths of up to millimeters can be obtained in a large scale via a solvothermal process by using a mixture of aqueous NaOH solution in glycerol. Ultrathin corrugated nanosheets can also be achieved by using a hydrazine salt based liquid phase exfoliation process. However, sulfur vacancies occur that alters the stoichiometry of the material to a chemical formula of Bi2S2.6 during the process of chemical exfoliation.

Bi2S3 is a direct bandgap semiconducting with bandgap of 1.3 eV and large absorption coefficient of 10cm-1.

We supply low price bismuth sulfide in several different forms for a range of applications.

High purity ‎1345-07-9‎

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Low Cost Bismuth Sulfide

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Low cost Semiconductor

Non-toxic semiconductor


Non-toxic n-type semiconductor

Bismuth sulfide powder

Bismuth Sulfide Powder

Can be used for preparation of bismuth sulfide nanoplates and ultrathin films

Sold by weight

≥99.995% purity

From £350

Bismuth sulfide crystals

Bismuth Sulfide Crystals by Size

Can be used to produce single or few-layer bismuth sulfide sheets via mechanical or liquid exfoliation

Small (≥10 mm2) or medium (≥25 mm2) crystals available*

≥99.999% purity

From £520

*Typical representative size, areas/dimensions may vary

Bulk single bismuth sulfide crystals are most commonly used as sources from which single or few-layer sheets can be obtained via either mechanical or liquid exfoliation. Single bismuth sulfide crystal or films produced from such crystals are suitable for study using atomic force microscopy or transmission electron microscopy

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Structure of Bismuth Sulfide

Similar to other 2D crystals such as graphite, MoS2 and TiS2. Bi2Shas a layered structure where layers are stacked together via van der Waals (vdW) interactions thus can be peeled into ultrathin layers by either mechanical or wet chemical exfoliation. It belongs to the Pnma space group with an orthorhombic unit cell that contains 20 atoms. The crystal structure is strongly anisotropic, consisting in tightly bonded units of Bi4S6 (also called ribbons) in an herringbone arrangement.

The structure of Bi2S3 favours the formation of one-dimensional nanostructures such as nano-wires, rods, tubes and ribbons.

Bi2S3 crystal structure
Top and side view of single-layer bismuth sulfide (Bi2S3)

Properties of 2D Bismuth Sulfide

After exfoliation of crystals or powder, bismuth sulfide typically has the following properties:

  • ‎Orthorhombic structure (space group: Pnma)
  • Non-toxic n-type semiconductor material containing environmentally benign elements bismuth and sulfur
  • Bi2S3 is a direct bandgap semiconducting with bandgap of 1.3 eV
  • Bi2S3 favours the formation of one-dimensional nanostructures such as nano-wires, rods, tubes and ribbons

Applications of Bismuth Sulfide

Bismuth sulfide (Bi2S3) single crystals can be used to prepare monolayer and few-layer Bi2S3 by mechanical or liquid exfoliation. 

Bismuth sulfide powder is suitable for liquid chemical exfoliation to prepare Bi2S3 nanosheets and nanoparticles down to few-layer films. 10% deionized water in 90% isopropyl alcohol is the best mixed solvent for the efficient and effective exfoliation of layered Bi2S3 nanosheets.

With a favourable band gap of 1.3 eV which lies near the near infrared and also a relatively large absorption coefficient, bismuth sulfide (Bi2S3) finds applications in solution processed thermoelectrics, photodetectors, photosensitizers, solar cells and supercapacitors. Bi2S3 is also an interesting candidate for or polymer–nanoparticle hybrid solar cells.

Literature and Reviews

  • Electronic Properties and Quantum Confinement in Bi2S3 Ribbon-Like Nanostructures, V. Calzia et al., J. Phys. Chem. C, 117 (42), 21923-21929 (2013); doi: 10.1021/jp405740b.
  • Sensitive Solution-Processed Bi2S3 Nanocrystalline Photodetectors, Nano Lett., 8 (11), 4002-4006 (2008); doi: 10.1021/nl802600z.
  • Bi2S3 Liquid-Junction Semiconductor-Sensitized SnO2 Solar Cells, Y. Lin et al., J. Electrochem. Soc.,· 161 (1) H1-H5 (2014); DOI: 10.1149/2.002401jes.
  • Crystal structure and transporting properties of Bi2S3 under high pressure: Experimental and theoretical studies, C. Li et al., J. Alloy. Compd., 688, 329e335 (2016); doi: 10.1016/j.jallcom.2016.06.276.
  • Exploring the PbS−Bi2S3 Series for Next Generation Energy Conversion Materials, C. Savory et al., Chem. Mater., 29, 5156−5167 (2017); DOI: 10.1021/acs.chemmater.7b00628.
  • Efficient mixed-solvent exfoliation of few-quintuple layer Bi2S3 and its photoelectric response, Y Guo et al., Nanotechnology, 28(33):335602 (2017); doi: 10.1088/1361-6528/aa79ce.
  • Bi2S3 nanoparticles anchored on graphene nanosheets with superior electrochemical performance for supercapacitors, H. Lu et al., Mater. Res. Bull. (2017), doi: 10.1016/j.materresbull.2017.05.047.
  • Engineering Vacancies in Bi2S3 yields sub-Bandgap Photoresponse and highly sensitive Short-Wave Infrared Photodetectors, N. Huo et al., Adv. Opt. Mater., 7 (11), 1900258 (2019); doi: 10.1002/adom.201900258.
  • Colloidal Bi2S3 Nanocrystals: Quantum Size Effects and Midgap States, M. Aresti et al., Adv. Funct. Mater. 2014; DOI: 10.1002/adfm.201303879.
  • Solution-Processed Mesoscopic Bi2S3:Polymer Photoactive Layers, A. MacLachlan et al., ChemPhysChem, 15, 1019 – 1023 (2014); DOI: 10.1002/cphc.201301103.
  • Large Scale Synthesis of Ultralong Bi2S3 Nanoribbons via a Solvothermal Process, Z. Liu et al., Adv. Mater., 15, 936 (2003); doi: 10.1002/adma.200304693.

Technical Data

CAS Number ‎1345-07-9‎
Chemical Formula Bi2S3
Molecular Weight 514.16 g/mol
Bandgap ~1.3 - 1.7 eV
Preparation Synthetic - Chemical Vapour Transport (CVT)
Structure Orthorhombic
Electronic Properties Semiconductor
Melting Point 850 °C
Colour Black needle-like crystal
Synonyms Bismuth(III) sulfide
Classification / Family Transition metal trichalcogenides (TMTCs), 2D Semiconductor materials, Nano-electronics, Nano-photonics, Photovoltaic, Materials science

Product Details

Form Purity Size
Nanopowder ≥99.9% ~ 500 nm
Powder ≥99.995% Not defined
Crystal ≥99.999% Small (≥10 mm2); Medium (≥25 mm2)

MSDS Documents

Bismuth sulfide powder MSDSBismuth sulfide powder MSDS Sheet

Bismuth sulfide crystal MSDSBismuth sulfide crystal MSDS Sheet

Bismuth sulfide nanopowder MSDSBismuth sulfide nanopowder MSDS Sheet

Pricing Table

Product Code Form Size/Weight* Price
M2205D1 Nanopowder 5 g £200
M2205D1 Nanopowder 10 g £310
M2205C1 Powder 1 g £350
M2205A10 Crystal Small (≥10 mm2) £520 ea.
M2205A25 Crystal Medium (≥25 mm2) £850 ea.

*typical representative size, areas/dimensions may vary

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To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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