Materials Science and Engineering, National Taiwan University, Taipei, 106 Taiwan.
ACS Nano. 2011 Aug 23;5(8):6564-70. doi: 10.1021/nn201940j. Epub 2011 Jul 18.
In this article, we demonstrate a semitransparent inverted-type polymer solar cell using a top laminated graphene electrode without damaging the underlying organic photoactive layer. The lamination process involves the simultaneous thermal releasing deposition of the graphene top electrode during thermal annealing of the photoactive layer. The resulting semitransparent polymer solar cell exhibits a promising power conversion efficiency of approximately 76% of that of the standard opaque device using an Ag metal electrode. The asymmetric photovoltaic performances of the semitransparent solar cell while illuminated from two respective sides were further analyzed using optical simulation and photocarrier recombination measurement. The devices consisting of the top laminated transparent graphene electrode enable the feasible roll-to-roll manufacturing of low-cost semitransparent polymer solar cells and can be utilized in new applications such as power-generated windows or multijunction or bifacial photovoltaic devices.
本文展示了一种使用顶部层压石墨烯电极的半透明倒置型聚合物太阳能电池，该电极不会损坏底层有机光活性层。层压过程涉及在光活性层的热退火过程中同时进行热释放沉积石墨烯顶部电极。所得的半透明聚合物太阳能电池的功率转换效率约为使用 Ag 金属电极的标准不透明器件的 76%。进一步使用光学模拟和光载流子复合测量对半透明太阳能电池从两个相对侧照明时的非对称光伏性能进行了分析。由顶部层压透明石墨烯电极组成的器件可实现低成本半透明聚合物太阳能电池的可行卷对卷制造，并可应用于新的应用，例如发电窗或多结或双面光伏器件。
