High Power Factor Flexible AgTe Film on Nylon by a Wet Chemical Method for Power Generator.

Herein, we develop a facile wet chemical method for the synthesis of AgTe powders at room temperature and flexible AgTe/nylon thermoelectric (TE) films are prepared by vacuum-assisted filtration of the synthesized AgTe powders and then hot pressing. Because of the good crystallinity of AgTe grains and continuous grain boundaries, an optimized film exhibits a power factor of 513 μW m K at 300 K, which stands among the highest values reported for AgTe-based films to date. In addition, the film also has good flexibility. A four-leg flexible TE device assembled with the film generates a power density of 5.46 W m at a temperature gradient of 31.8 K. This work provides a facile and environmentally friendly method for preparing flexible AgTe films.