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从自旋扩散方程和欧姆定律出发研究了铁磁层到有机半导体的自旋注入,得到了系统的电流自旋极化率.有机半导体中的载流子为自旋极化子和不带自旋的双极化子,极化子比率在有机半导体内随输运距离变化.通过计算发现匹配的铁磁和有机半导体电导率有利于自旋注入;通过调节界面电阻自旋相关性,电流自旋极化率可获得很大程度提高;极化子比率衰减速率对有机半导体电流自旋极化率具有非常重要的影响.
Based on spin diffusion equation and Ohm’s law, spin injection from ferromagnetic layer to organic semiconductor has been studied, and the current spin polarization of the system has been obtained. The carriers in organic semiconductor are spin-polarons and The ratio of spinodal bipolaron and polaron varies with the transport distance in organic semiconductors, and the calculated ferromagnetism and conductivity of organic semiconductors are found to be favorable for spin injection. By adjusting the interfacial resistance spin dependence, the current self The spin-polarizability can be greatly improved. The rate of polaron decay has a very important effect on the spin-polarizability of organic semiconductors.