期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 15, 期 41, 页码 17818-17822出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cp52881b
关键词
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资金
- Ministry of Education, Culture, Sports, Science, and Technology of Japan [23350061]
- JSPS
- Grants-in-Aid for Scientific Research [13J02780, 23350061] Funding Source: KAKEN
BTBT ([1]benzothieno[3,2-b][1]benzothiophene) is an organic semiconductor that realizes high mobility in organic transistors. Here we report that the charge-transfer (CT) salt, (BTBT)(2)PF6, shows a high room-temperature conductivity of 1500 S cm(-1). This compound exhibits a resistivity jump around 150 K, but when it is covered with Apiezon N grease the resistivity jump is suppressed, and the metallic conductivity is maintained down to 60 K. Owing to the very high conductivity, the ESR signal shows a significantly asymmetric Dysonian lineshape (A/B congruent to 3) even at room temperature. Since most organic conductors are based on strong electron donors, it is remarkable that such a weak electron donor as BTBT realizes a stable and highly conducting organic metal.
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