All-printed, flexible, organic thermoelectric generators

In this talk, we describe the fabrication and characterisation protocol of all-printed organic thermoelectric generators, fabricated on flexible polyimide substrates. Each generator is composed of two semiconducting legs, one p-type doped and the other n-type doped, electrically connected in series. The best performing devices (active thermoelectric area of 6 cm2, layers thickness of approximately 1µm) exhibit a Seebeck coefficient as high as 35 µV/K (stable in ambient conditions over 75 days) and a maximum output power of 2 nW per single generator and for a temperature difference of 40 K.