[22a-P03-1~32] 12.3 Functional Materials and Novel Devices

[22a-P03-14] Giant Seebeck Effect in Flexible Organic Single Crystals (2)

〇Shuya Hattori¹, Ryo Abe¹, Yongyoon Cho¹, Shotaro Hayashi², Hiroaki Benten¹, Manish Pandey¹, Masakazu Nakamura¹ (1.NAIST, 2.KUT)

Keywords:

Organic semiconductor,flexible,Giant Seebeck Effect

With the spread of IoT devices, the development of power-saving sensors is advancing as a medium to connect things and information. There is a growing need for isolated power supplies to operate them. As a means for realizing this, attention is focused on thermoelectric conversion which can utilize the heat of low energy density discharged from the human body and electronic equipment. In our previous studies, a huge Seebeck coefficient exceeding 10mV/K was found in thin films and single crystals of organic low-molecular-weight semiconductors. Materials that have been confirmed to exhibit the giant Seebeck effect so far generally have the disadvantage of being brittle. If the giant Seebeck effect is exhibited by a flexible material, its application to flexible devices will be facilitated. In this study, we compared the thermoelectric properties of flexible organic materials and examined the giant Seebeck effect in flexible organic materials.