Toshima Manufacturing Co., Ltd. Materials System Division
TOSHIMA Manufacturing Co.,Ltd. Materials System Division
Toshima Manufacturing Co., Ltd. Materials System Division
Toshima Manufacturing Co., Ltd. Materials System Division

A co-authored paper on thermoelectric materials was published in the Japanese Journal of Applied Physics

A technical paper on a flexible thermoelectric power module developed jointly with AIST and E ThermoGentek was published online in the Japanese Journal of Applied Physics.

Paper title
「Large-scalable fabrication of improved Bi–Te-based flexible thermoelectric modules using a semiconductor manufacturing process」

The outline of this paper is as follows.
Bismuth telluride (Bi-Te) thermoelectric modules show high output power density and high flexibilty, which can contribute to utilization for a wider variety of heat sources.
In this study, we developed high-performance flexible thermoelectric power generation modules. The interconnection resistance for these modules was reduced by designing the electrodes, and the performance of Bi-Te-based thermoelectric conversion elements was improved by optimizing the fabrication process. As consequences of these improvements, the output power density at ΔT = 70 K was achieved to be 87 mWcm-2, which is 1.3 times higher than that of conventional prototype.
In addition, the increase in the internal resistance of the developed modules was not confirmed even after the durability tests (10000 cycles of mechanical bending test, 1000 cycles of thermal stress test).

The thermoelectric conversion elements reported in this paper are marketed as our products.