基于金属透明电极的聚合物太阳能光吸收的研究

摘要

Ultra-thin metal electrodes can be utilized to fabricate semitransparent polymer solar cells organic with spectral selectivity for solar radiation. Here, a stacked cathode of Ca /Ag /ITO and semitransparent polymer solar cell of ITO /PEDOT:PSS /P3HT:PCBM /Ca /Ag /ITO are investigated respectively by simulating light absorption and transmittance of the devices based on the transfer matrix method (TMM) of optical thin film. For semitransparent polymer solar cell with a 70 nm thick active P3HT:PCBM blend layer, an average transmission more than 30% is achieved with a high PCE of 1.65% under a radiation of AM 1.5G of 100 mW/cm2.%利用超薄金属电极可以制成半透明的聚合物太阳能电池，从而使电池对入射太阳光具有光谱选择性吸收的特性。该文基于光学薄膜传递矩阵方法(TMM)，针对Ca/Ag/ITO半透明阴极以及结构为ITO/PEDOT：PSS/P3HT：PCBM/Ca/Ag/ITO的半透明太阳能的光吸收及透射特性进行研究。理论和实验表明：通过优化半透明阴极厚度，器件在AM 1.5G 光照下的平均透过率高于30%，能量转换效率(PCE)为1.65%。