摘要
Ⅰ. INTRODUCTIONThirty organic superconductors have been synthesized since the first organic superconductor (TMTSF)<sub>2</sub>PF<sub>6</sub> was synthesized in 1980. According to their donors, they can be classified into four families, TMTSF, BEDT-TTF, DMET and Ni(dmit)<sub>2</sub>. The BEDT-TTF is the largest one in which there are many kinds of compounds with T<sub>c</sub>