[17a-P4-1~39] 12.3 Functional Materials and Novel Devices

[17a-P4-6] Introduction of Cationic Aryl Crown Ethers to the Stable n-Type Doping of Single-walled Carbon Nanotubes

〇Tomohiro Ikeda¹, Tsuyoshi Kawai¹, Yoshiyuki Nonoguchi^1,2 (1.Nara Inst. Sci. Tech., 2.JST PRESTO)

Keywords:Thermoelectric properties, SWNT, Crown ether

Since most carbon and organic materials show p-type, they have been applied in the development of uni-leg thermoelectric systems. However, it is still a challenge in developing the n-type materials that enable the design of more efficient bi-polar thermoelectric systems. We have recently consider to introduce appropriate counter cations in order to compensate negative charges on n-type single-walled carbon nanotubes (SWNTs). Here we report the thermoelectric properties and air-stability of n-type SWNTs coordinated with apparently-large cations such as crown ether-potassium complexes.