Light harvesting of photoactive layer to incident solar illumination is an important factor that constrains device performances of organic photovoltaic devices (OPVs). Different types of metal nanoparticles (NPs) including nanospheres, nanorods, nanocubes and other irregular shapes, have been incorporated into the OPVs to promote light absorption and thus improve device's power conversion efficiency (PCE) by using their surface plasmon resonance and light scattering. In this work, [email protected](sodium 4-styrenesulfonate) (PSS) core-shell tetrahedra nanostructures, synthesized by seed mediated growth, are incorporated into OPVs for the first time. Both the use of Au tetrahedra core and the introduction of ultrathin PSS shell are beneficial for generating and maintaining a strong local field. With an optimal concentration of [email protected] NPs, the PCE achieves 9.42% (with a maximum value of 9.53%), showing an enhancement factor of 15.30% compared with that in the control device. The optical and electrical effects of [email protected] tetrahedra NPs are systematically investigated to comprehensively understand the superior performances of our plasmonic OPVs.

光敏层对入射太阳光的光收集是限制有机光伏器件（OPV）器件性能的重要因素。包括纳米球，纳米棒，纳米立方体和其他不规则形状的不同类型的金属纳米颗粒（NP）已被掺入OPV中，以利用表面等离子体激元共振和光散射来促进光吸收，从而提高器件的功率转换效率（PCE）。在这项工作中，通过种子介导的生长合成的[电子邮件保护的] [4-苯乙烯磺酸钠]（PSS）核壳四面体纳米结构首次被掺入OPV。使用金四面体核和引入超薄PSS壳都有利于产生和维持强大的局部场。在最佳浓度的[受电子邮件保护的] NPs的情况下，PCE达到9.42％（最大值为9.53％），与控制设备相比显示出15.30％的增强因子。系统研究了[受电子邮件保护的]四面体NP的光学和电效应，以全面了解我们的等离激元OPV的优越性能。