P Type N type Bismuth Telluride for TEC TEG Module
| CAS Number | 1304-82-1 |
| Purity | 4N, 5N |
| Cube Size | 1.4*1.4*1.6 mm |
| Particle Size | 100 mesh, 325 mesh |
| Min Packaging | 100 g/vacuum bag |
| MSDS/COA | Email or WA business |
| Capacity | 2 MT/month |
| Ready to Ship | 2-5 days, or by request |
Fast Shipping
30 days return & 12 months warranty
Orders processed
within 24 hours
Basic Information
Bismuth telluride (Bi2Te3) is a narrow-bandgap, layered semiconductor known for its excellent thermoelectric properties and relatively high thermal conductivity. Recent advancements in research indicate that bismuth telluride holds significant potential for improving the operational speed of microchips and serving as a foundational material for the new field of spintronics, a next-generation technology focused on utilizing electron spin in addition to charge.
Custom Rare Metal manufactures Antimony and Selenium doped Bi2T3 with the smallest possible average cubic sizes for use in thermoelectric materials using electrode dice at a competitive price. They are available in a variety of quantities, ranging from research-scale to bulk production volumes. We can also make Bismuth telluride target outside this range as required.
Available Forms of Bismuth Telluride
- Bi2Te3 Powder
- Bi2Te3 Cube
- Bi2Te3 Pellet
- Bi2Te3 Rod
Crystal-pulled bismuth telluride, the most commonly utilized type, is produced through zone melting and crystal-pulling techniques. This method ensures consistency and performance uniformity within a 3% tolerance. The resulting material exhibits stable and reliable thermoelectric properties, making it a standard choice for various applications.
Hot-extruded bismuth telluride, available in both n-type and p-type forms, represents a core material offering superior performance characteristics. Manufactured using advanced nano-process sintering technology, this material shows mechanical strength that is 4–6 times greater than that of the zone-melted crystal-pulled one. Its electrical conductivity reaches approximately 1000 S/cm, with a Seebeck coefficient in the range of 210–230 µV/K. Each complete crystal rod weighs approximately 1 kg. Customized dice sizes and particle forms are also available upon request.
Standard Specification
| Concentration – (ppm wt) | |||||
| Element | Standard | Test Result | Element | Standard | Test Result |
| Cu | ≤4 | 3.5 | Pb | ≤4 | 3.5 |
| Ag | ≤6 | 5.2 | Cd | ≤7 | 5 |
| Mg | ≤5 | 4 | As | ≤5 | 4.7 |
| Ni | ≤4 | 3.5 | Al | ≤4 | 3.5 |
| Zn | ≤6 | 5 | Se | ≤7 | 5 |
| Fe | ≤7 | 5.8 | Sn | ≤6 | 4.8 |
Applications
- Thermoelectric Modules: consist of multiple thermoelectric elements connected electrically in series and thermally in parallel. These modules are employed in thermoelectric coolers (TECs) for refrigeration applications and in thermoelectric generators (TEGs) for converting waste heat into electricity.
- TECs for cooling electronic devices: microprocessors, lasers, and infrared sensors. When an electric current is applied to the thermoelectric module, heat is absorbed from one side of the module and expelled from the other, providing localized cooling without the need for refrigerants or moving parts.
- Power Generation: In TEG applications, it is used to generate electricity from waste heat sources, such as industrial processes, vehicle exhaust, or solar radiation. By harnessing temperature differentials, TEGs can produce sustainable electrical power without consuming additional fuel.
Bismuth Telluride Technical Data
| Density | 7.64-7.74 g/cm3 |
| Melting Point | 585 °C |
| Electrical Conductivity (Test Temp. 300K) | 1050±5% S/cm |
| Thermal Conductivity (Test Temp. 300K) | 1.65±5% w/m.k |
| Seebeck Coefficient (Test Temp. 300K) | 10-230 ㎶/K |
| ZT Value (Test Temp. 300K) | 0.8-0.95 |
| Plating Thickness | Ni=3-4 μm, Sn=1-2 μm |
Coating Adhesion | 10.25- 26.05 N/m2 |
| Sputtering Target | follow the drawing |
Customization Production
Please let us know what doping type, form, size or drawings you need. We will let you have NDA and quotation project
Even for only 1kg, it is available for you as well. If there’s no stock, it takes around 3-5 working days to finish the production, but some types need customize then the lead time would be extra 5 working days.
N-type Crystal pulling type Bismuth Telluride as a function of temperature
Curves of the electromotive force rate, electrical conductivity, thermal conductivity and ZT value
Packaging, Transport and Storage
- Packaging: vacuum bags or drums, clearly tagged and labeled externally to ensure efficient identification and quality control. Great care is taken to avoid any damage which might be caused during storage before transit or during transport.
- Transportation: by Fedex, DHL, UPS with door to door delivery, by Air for urgent order and by Sea for bulk order.
- Storage: store Bismuth shot in a dry, clean environment to avoid damage and pollution.
Why Custom Rare Metal?
Custom Rare Metal, an Aster Materials company, founded and headquartered in Changsha city, which is the non-ferrous metal resources gathering place in China. We entered the Linxiang Lead and Zinc Mine to start smelting and material processing business in 2009.
The Most Efficient Teams
- A team of engineers with more than 15 years of senior production experience in the field of metal reprocessing, coupled with our highly skilled sales team.
- High precision and stability of production equipment, skilled operators and standardized processes ensure excellent quality.
- We have ICP, ICP-MS, ICP-OES, Laser particle sizer, thermal impedance testing equipment, Thermal shock chamber, density, viscosity and other equipment and facilities.
Higher than 99.99% Purity
- The raw material end is strictly controlled, and offer a complete set of test reports including TDS, COA, PSD, SEM for each batch.
- The content of heavy metals is far lower than guaranteed value, and actual purity is higher than 99.99%.
- SGS Inspection and EU RoHS standard materials
- Sample Support for preliminary test, secondary testing and more tests to verify the consistent quality of different batches.
The Best Buyer Satisfaction
- Quotation and Technical support within 60 minutes by e-mail, calling or instant message.
- Strict raw material quality control and test report for finished product, buyer do not have to worry about quality problems.
- Every year, new and old buyer satisfaction surveys are conducted, and our buyers filled and signed questionnaires seriously that satisfaction is above 9 out of 10 score.
Frequently Asked Question
FAQ about custom rare metal
With more than 15 years’ experience in manufacturing Bismuth metals, we have got a distinguished reputation for excellence, supported by our rigid quality control system and a team of skilled engineers.
- Click [Inquiry Now] or visit [Contact] page to submit your request. Please attach a drawing for custom size.
- Our sales or technical support team will respond within 1-2 hours.
- Send you a quotation and send you an Invoice or payment as per your order instruction.
- After payment, we will keep you updated of production status
- Pack your order after you confirmed outgoing quality check report
- Send shipping documentations, until you receive it in one piece.
The top three export markets are Japan, Germany and the United States in the past 12 months.
In many cases, small samples can be obtained free of charge. Please message or call us to discuss your requirements. Postage costs for samples will be depended on your place.
Small samples from our ready stock can be shipped out in the next day. If you request a sample for a custom size which will be shipped within 5-7 working days of receipt of that request, along with COA.
- Usually 5-7 days by DHL, FedEx or UPS with door to door delivery.
- 2-5 days by Air for urgent order.
- 10-35 days to arrive at your port by Sea.
