Presentation Information
[24a-1BC-11]Influence of chemical doping on the giant Seebeck effect in rubrene single crystals
〇(M1)Hideaki Kimura1, Shuya Hattori1, Ryo Abe1, Manish Pandey1, Hiroaki Benten1, Masahiro Hiramoto1, Masakazu Nakamura1 (1.naist)
Keywords:
Giant 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 our previous study, it was also confirmed that photocarrier doping of rubrene single crystals can temporarily achieve both a giant Seebeck coefficient and a relatively high conductivity. Therefore, in this study, we discuss whether it is possible to increase conductivity while maintaining a large Seebeck coefficient when F4TCNQ is doped into rubrene single crystals.