Three different silver nanoprisms (AgNPrs) were combined and used as light-trapping materials in organic solar cells (OSCs). These mixed AgNPrs (M-AgNPrs) increased the photocarrier generation in the OSCs due to the broadband absorption, which was attributed to mutual multiple plasmonic excitations covering the entire visible light region. The M-AgNPrs were incorporated into a poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) hole-transport layer in the OSCs. The UV–vis spectra, atomic force microscope images and current density versus voltage curves of the fabricated devices were recorded at different loading concentrations of the M-AgNPrs. Finite-difference time-domain simulation, impedance spectroscopy, and measurement of incident photon-to-current efficiency of the devices confirmed the effect of the multiple plasmonic excitations. The results suggest that, in an optimum condition, the efficiency of the OSCs loaded with M-AgNPrs was 7.9% higher than the reference OSC.

三种不同的银纳米棱镜（AgNPrs）组合在一起并用作有机太阳能电池（OSC）中的光捕获材料。由于宽带吸收，这些混合的AgNPrs（M-AgNPrs）增加了OSC中光载波的产生，这归因于覆盖整个可见光区域的相互多重等离子体激发。将M-AgNPrs掺入OSC中的聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）空穴传输层中。在M-AgNPrs的不同负载浓度下，记录了所制造器件的UV-vis光谱，原子力显微镜图像以及电流密度与电压的关系曲线。器件的时域有限差分模拟，阻抗谱和入射光子-电流入射效率的测量证实了多种等离子体激元激发的影响。