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High efficiency polymer solar cells with vertically modulated nanoscale morphology

机译:具有垂直调制的纳米级形态的高效聚合物太阳能电池

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Nanoscale morphology has been shown to be a critical parameter governing charge transport properties of polymer bulk heterojunction (BHJ) solar cells. Recent results on vertical phase separation have intensified the research on 3D morphology control. In this paper, we intend to modify the distribution of donors and acceptors in a classical BHJ polymer solar cell by making the active layer richer in donors and acceptors near the anode and cathode respectively. Here, we chose [6,6]-phenyl-C_(61)-butyric acid methyl ester (PCBM) to be the acceptor material to be thermally deposited on top of [poly(3-hexylthiophene)] P3HT: the PCBM active layer to achieve a vertical composition gradient in the BHJ structure. Here we report on a solar cell with enhanced power conversion efficiency of 4.5% which can be directly correlated with the decrease in series resistance of the device.
机译:纳米形态已被证明是控制聚合物本体异质结(BHJ)太阳能电池电荷传输特性的关键参数。垂直相分离的最新结果加强了3D形态控制的研究。在本文中,我们打算通过使有源层分别富集阳极和阴极附近的施主和受主,来修改经典BHJ聚合物太阳能电池中施主和受主的分布。在这里,我们选择[6,6]-苯基-C_(61)-丁酸甲酯(PCBM)作为受体材料,将其热沉积在[聚(3-己基噻吩)] P3HT的顶部:PCBM活性层在BHJ结构中实现垂直成分梯度。在这里,我们报道了一种具有4.5%增强功率转换效率的太阳能电池,该功率转换效率可直接与器件串联电阻的降低相关。

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