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Improved organic solar cells

机译:改进的有机太阳能电池

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摘要

Although the efficiency of organic solar cells is not yet high enough to render them commercially practical, they offer several attractions over crystalline silicon wafer cells. The organic cells are cheap, flexible, and could be manufactured in a "roll-to-roll" printing process. One barrier to higher efficiency organic cells is that, electrons can leak to the anode instead of flowing to the cathode in the highest-performing organic cells. Previous research has shown that this unavoidable limitation occurs when a phase-separated blend of a polymeric electron donor (P3HT) and an electron ac- ceptor (PCBM) both make contact with the anode. In the past, this leakage was partially suppressed by interposing an electron-resistive, hole-conducting polymer layer (PEDOT:PSS) between the active organic blend and the anode.
机译:尽管有机太阳能电池的效率还不足以使其在商业上实用,但它们比晶体硅晶片电池更具吸引力。有机电池便宜,柔韧性好,可以“卷对卷”的印刷工艺制造。效率更高的有机电池的一个障碍是,在性能最高的有机电池中,电子会泄漏到阳极,而不是流到阴极。先前的研究表明,当聚合物电子给体(P3HT)和电子受体(PCBM)的相分离混合物都与阳极接触时,就会发生这种不可避免的局限性。过去,通过在活性有机共混物和阳极之间插入电子电阻的空穴导电聚合物层(PEDOT:PSS),可以部分抑制这种泄漏。

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