Xuanhua Li, Wallace Chik Ho Choy, Haifei Lu, Wei E. I. Sha and Aaron Ho Pui Ho Efficiency Enhancement of Organic Solar Cells by Using Shape-Dependent Broadband Plasmonic Absorption in Metallic Nanoparticles Advanced Functional Materials 23
A broadband absorption of organic solar cells (OSCs) is realized by combining differently shaped nanomaterials exhibiting varied localized plasmonic resonances and scattering regions into the active layer. As a result, power conversion efficiency is enhanced by 19.44% compared to pre-optimized control OSCs. With respect to the origin of this enhancement, theoretical and experimental studies show that the broadband resonance is achieved by the simultaneous excitation of versatile plasmonic resonances, i.e., material-, shape-, size-, and polarization-dependent low- and high-order plasmonic resonances.
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