Bismuth Selenide
High-purity Bismuth Selenide (Bi2Se3, CAS 12068-69-8), 99.9–99.999%, supplied wholesale by Zyntex. Reference topological insulator and thermoelectric material for quantum research, thin films and infrared detectors. CoA and SDS.
Description
Bismuth Selenide Product Overview
Bismuth selenide (Bi2Se3) is a dark gray crystalline solid with a layered structure that cleaves easily, similar to graphite. It has a narrow band gap of about 0.3 eV.
Since about 2009, Bi2Se3 has been the reference material for three-dimensional topological insulators: its interior is insulating while its surface conducts electricity through special protected states. Researchers use it to study spintronics, quantum devices and novel electronic effects. Thin films are grown by molecular beam epitaxy or vapor deposition from high-purity sources.
Bismuth selenide is also used, often alloyed with Bismuth telluride, in thermoelectric materials for cooling and power generation near room temperature. Related selenides include Tin selenide and Antimony Selenide, and the element itself is available as Selenium.
Key Applications of Bismuth Selenide
Main application areas:
⚛️ Quantum Materials
Reference topological insulator for research.
🔥 Thermoelectrics
Component of bismuth chalcogenide thermoelectric alloys.
🔬 Thin Films
Source material for MBE and vapor deposition.
💡 Optoelectronics
Material for infrared detector research.
Bismuth Selenide Technical Specifications
| Parameter | Standard Value |
|---|---|
| Product Name | Bismuth Selenide (Bi2Se3) |
| CAS Number | 12068-69-8 |
| Molecular Formula / Weight | Bi2Se3 / 654.84 g/mol |
| Assay (Purity) | 99.9% – 99.999% |
| Bandgap | ~0.3 eV |
| Appearance | Dark Gray Crystalline Ingot / Pieces / Powder |
| Documents | CoA and SDS with every lot |
⚠️ Safety & Handling: Toxic if swallowed or inhaled and may cause damage to organs through prolonged exposure; very toxic to aquatic life. Contact with acids may release toxic hydrogen selenide. Avoid dust formation, work in a fume hood, and wear gloves, eye protection and respiratory protection. Store in tightly closed containers in a dry place. Always consult the Safety Data Sheet (SDS) for full classification and handling instructions.
Frequently Asked Questions
What is a topological insulator?
A material that insulates in its interior but conducts along its surface through protected electronic states. Bi2Se3 is the most widely studied example.
Which forms do you supply?
Ingots, pieces, powder and evaporation material are available in purities from 99.9% to 99.999%.
How can I get a price and documents?
Prices depend on quantity, packaging and destination. Contact us with your required volume to receive a quotation together with the CoA and SDS.
