Ag纳米颗粒对有机小分子太阳能电池性能的改善

摘要

在有机小分子太阳能电池CuPc/C60和TiOPc/C60的阳极ITO表面分别制备了一层Ag纳米颗粒,并采用MoO3作为阳极缓冲层,器件的性能均得到有效改善.Ag纳米颗粒的引入所形成的表面等离子激元共振可显著提高有机光活性层的吸收效率和光生激子的分解效率；而MoO3有效抑制了光生激子在有机/金属界面处发生的猝灭,提高了器件的短路电流,并保持其它性能不变,最终提高器件的光电转化效率.%Enhanced performance of small molecular weight organic solar cells based on CuPc/Cw and TiOPc/ C60 with Ag nanoparticles fabricated on the ITO anode and MoO3 as the anode buffer layer has been demonstrated. Surface plasmon induced by the incorporation of Ag nanoparticles results in the increased absorption efficiency and photogenerated exciton dissociation probability of the photoactive layers. Meanwhile, the quenching of the photogenerated excitons at the organic/metal interface can be successfully restricted by the MoO3 anode buffer layer. Consequently, the short-circuit current is improved and the other parameters maintain unaffected, which leads to an enhanced power conversion efficiency of the devices.