College of Polymer Science and Polymer Engineering and ⊥Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States.
ACS Appl Mater Interfaces. 2014 Aug 13;6(15):13201-8. doi: 10.1021/am503041g. Epub 2014 Jul 9.
Low efficiency and poor stability are two major obstacles limiting the manufacturing of renewable and cost-effective polymer solar cell (PSCs). To address these problems, solution-processed poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) doped with Fe3O4 magnetic nanoparticles ((PEDOT:PSS):Fe3O4), and above (PEDOT:PSS):Fe3O4 thin film aligned by an external magnetostatic field ([(PEDOT:PSS):Fe3O4] W/H) were used as the anode buffer layer for PSCs, respectively. As compared with PSCs with PEDOT:PSS as an anode buffer layer, 38.5% enhanced efficiency and twice improved stability are observed from PSCs incorporated with [(PEDOT:PSS):Fe3O4] W/H anode buffer layer. It was found that enhanced efficiency and improved stability resulted from a combination of reduced acidity of PEDOT:PSS and enhanced electrical conductivity that originated from generated counterions and the paramagnetism of Fe3O4 magnetic nanoparticles by an external magnetostatic field.
低效率和差稳定性是限制可再生和具有成本效益的聚合物太阳能电池（PSC）制造的两个主要障碍。为了解决这些问题，使用了经过溶液处理的掺杂有 Fe3O4 磁性纳米粒子的聚（3,4-乙二氧基噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）（（PEDOT：PSS）：Fe3O4）和经外部磁场排列的上述（PEDOT：PSS）：Fe3O4 薄膜（（PEDOT：PSS）：Fe3O4] W/H）分别作为 PSC 的阳极缓冲层。与以 PEDOT：PSS 作为阳极缓冲层的 PSC 相比，掺入具有[（PEDOT：PSS）：Fe3O4] W/H 阳极缓冲层的 PSC 的效率提高了 38.5%，稳定性提高了两倍。结果发现，效率的提高和稳定性的提高是由于 PEDOT：PSS 的酸度降低以及由外部磁场产生的抗衡离子和 Fe3O4 磁性纳米粒子的顺磁性引起的电导率增强的综合作用。
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