Image of an active vulcano. Red lava is running down the side of the vulcano. From the top hole thick smoke is also coming out. The sky is grey and there are clouds all around the vulcano. The image symbolizes waste heat; heat that is not currently used.


Thermoelectric generator (TEG) & thermoelectric cooler (TEC/Peltier) modules produced by a new, flexible, automated, and mass-scalable process

The physics behind the thermoelectric effect


Thermoelectricity is the field which deals with the relationship between temperature and electricity. Both, thermoelectric generators (TEGs)  and thermoelectric coolers (TECs) are based on the thermoelectric effect. If a temperature difference is applied across a TEG module, a voltage is produced. If a voltage is applied to a TEC module, it will pump heat.   MORE…

Graphical representation of the manufacturing process steps for ESPRYX. Each step is done with existing industrial machinery. The quality of the modules can be tested after any of the steps, e.g. electrical resistance.

ESPRYX™ production process

After work spanning several years, a team at Creavis has now come up with a high-performance approach that allows the production of thermoelectric generators (TEGs) and thermoelectric coolers (TECs/Peltier) modules in a fully automated, flexible, continuous and industrially scalable process. MORE…

Image of an ESPRYX module, the Evonik brand name for the thermoelectric generator (TEG) modules. Such modules come out from the manufacturing process developed at Evonik Creavis GmbH. The proces is automated, flexible and cost efficient.

ESPRYX™ TEG and TEC modules

The thermoelectric modules, which come in a completely new design are to be marketed under the brand name ESPRYX™. The smart module design enable both TEG and TEC/Peltier module production. Thanks to their choice of materials and a special black protective coating ESPRYX™ performs well at temperatures up to remarkable 280°C. MORE…

Application Fields

The potential application fields for the resulting ESPRYX™ modules are manifold; because of its design allowing its use as both TEG and TEC/Peltier elements, as well as, for its robustness, size and shape flexibility, and scalability. Each specific application has its own requirements; ESPRYX™ is best suited in applications requiring compact size, low weight, low noise levels, wireless power, and mobility.  MORE…