苄基膦酸改性氧化锌作为有机太阳能电池透明电极的研究
Zinc Oxide Modified with Benzylphosphonic Acids as Transparent Electrodes in Regular and Inverted Organic Solar Cell Structures
摘要：
提出了一种方法来修改的WF的溶液处理的溶胶-凝胶衍生的ZnO在一个非常宽的范围内超过2.3 eV。这种方法依赖于基于具有不同偶极矩的膦酸的致密且均匀的自组装单分子膜的形成。这使我们能够将ZnO作为电荷选择性底部电极应用于常规或倒置太阳能电池结构中，使用P3 HT：PCBM作为活性层。这些器件与ITO/PEDOT：PSS上的参考电池的性能竞争甚至超过其性能。我们的发现挑战了目前的观点，即倒置太阳能电池的底部电极需要电子阻挡才能获得良好的器件性能。
英文摘要：
An approach is presented to modify the WF of solution-processed sol-gel derived ZnOover an exceptionally wide range of more than 2.3 eV. This approach relies on the formation of dense and homogeneous self-assembled monolayers based on phosphonic acids with different dipole moments. This allows us to apply ZnO as charge selective bottom electrodes in either regular or inverted solar cell structures, using P3HT:PCBM as the active layer. These devices compete with or even exceed the performance of the reference cell on ITO/PEDOT:PSS. Our finding challenges the current view that bottom electrodes in inverted solar cells need to be electron-blocking for good device performance.
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