论文标题

光伏设备中的随机纳米颗粒层的理论应用于自聚集金属样品

Theory of random nanoparticle layers in photovoltaic devices applied to self-aggregated metal samples

论文作者

David, Christin, Connolly, James P., Ramos, Christian Chaverri, de Abajo, F. Javier García, Plaza, Guillermo Sánchez

论文摘要

在不同的底物上研究了随机Al和Ag纳米颗粒分布,我们利用纳米圈自我聚集法(NSA)进行制造。依靠这些样品的测量粒径分布,我们开发了一个理论模型,可以应用于任意随机纳米结构层,如几个不同的NSA样品所证明的那样。作为概念的证明,从理论和实验中研究了由准随机建模输入(EBL)制成的完全相同的粒子分布的光学特性。我们的数值程序基于麦克斯韦方程的严格解决方案,并产生完全相互作用的随机定位纳米颗粒阵列的光谱。这些结果构成了一种新方法,用于提高纳米颗粒层的光学性能,并直接应用于增强的光伏。

Random Al and Ag nanoparticle distributions are studied on varying substrates, where we exploit the nanosphere self-aggregation method (NSA) for fabrication. Relying on the measured particle size distributions of these samples, we develop a theoretical model that can be applied to arbitrary random nanostructure layers as is demonstrated for several distinct NSA samples. As a proof of concept, the optical properties of the exact same particles distributions, made from the quasi random modeling input with electron beam lithography (EBL), are investigated from both theory and experiment. Our numerical procedure is based on rigorous solutions of Maxwell's equations and yields optical spectra of fully interacting randomly positioned nanoparticle arrays. These results constitute a new methodology for improving the optical performance of layers of nanoparticles with direct application to enhanced photovoltaics.

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