[18a-P05-1~32] 12.3 Functional Materials and Novel Devices

[18a-P05-13] Influence of chemical doping on the giant Seebeck effect in rubrene single crystals (2)

〇Hideaki Kimura¹, Shuya Hattori¹, Ryo Abe¹, Manish Pandey¹, Hiroaki Benten¹, Masahiro Hiramoto¹, Masakazu Nakamura¹ (1.NAIST)

Keywords:

Seebeck effect,organic semiconductor,doping

With the proliferation of IoT devices, power-saving sensors are being developed as a medium to connect objects and information. The need for isolated power supplies to operate them is increasing. As a means of achieving this, thermoelectric conversion, which can utilize low-energy density heat emitted from the human body and electronic devices, is attracting attention. In our previous studies, we found huge Seebeck coefficients exceeding 10 mV/K in thin films and single crystals of small organic semiconductors. In the previous issue, we reported that chemical doping of rubrene single crystals can combine the giant Seebeck effect with high conductivity. In this issue, we discussed the changes in thermoelectric properties when the doping amount is varied finely.