Simultaneous optical and electrical modeling of plasmonic light trapping in thin-film amorphous silicon photovoltaic devices
Simultaneous optical and electrical modeling of plasmonic light trapping in thin-film amorphous silicon photovoltaic devices
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DOI：
10.1117/1.jpe.5.057007
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发表时间：
2015
影响因子：
1.7
通讯作者：
Keyur K. Gandhi;A. Nejim;Michail J. Beliatis;C. Mills;S. Henley;S. Silva
中科院分区：
文献类型：
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作者：
Keyur K. Gandhi;A. Nejim;Michail J. Beliatis;C. Mills;S. Henley;S. Silva
抽象的。光伏 (PV) 电池的快速原型制作需要一种同时模拟器件光学和电学特性的方法。纳米材料光伏电池的发展只会增加此类模拟的复杂性。在这里，我们使用商业技术计算机辅助设计 (TCAD) 软件 Silvaco Atlas 来设计和建模集成在薄膜非晶硅 (a-Si:H) 光伏电池光电器件模型中的等离子体金纳米颗粒。在入射光照射下，我们同时模拟电池的光学和电学特性，并使用模拟生成电流-电压 (J−V) 和外部量子效率图。由于光散射和纳米粒子的局域表面等离子体共振相互作用而引起的光捕获，由于光敏层中复合率的降低而导致光学和电学性质的增强。我们表明，建模的等离子体 a-Si:H PV 电池的器件性能很大程度上取决于金纳米粒子的位置和尺寸，这导致仅光学性能或光学和电学性能的改进。该模型提供了一种通过同时优化光学和电学特性来优化器件架构的途径，从而从设计角度详细了解等离子体光伏电池，并为快速器件原型设计提供了先进的工具。
Abstract. Rapid prototyping of photovoltaic (PV) cells requires a method for the simultaneous simulation of the optical and electrical characteristics of the device. The development of nanomaterial-enabled PV cells only increases the complexity of such simulations. Here, we use a commercial technology computer aided design (TCAD) software, Silvaco Atlas, to design and model plasmonic gold nanoparticles integrated in optoelectronic device models of thin-film amorphous silicon (a-Si:H) PV cells. Upon illumination with incident light, we simulate the optical and electrical properties of the cell simultaneously and use the simulation to produce current–voltage (J−V) and external quantum efficiency plots. Light trapping due to light scattering and localized surface plasmon resonance interactions by the nanoparticles has resulted in the enhancement of both the optical and electrical properties due to the reduction in the recombination rates in the photoactive layer. We show that the device performance of the modeled plasmonic a-Si:H PV cells depends significantly on the position and size of the gold nanoparticles, which leads to improvements either in optical properties only, or in both optical and electrical properties. The model provides a route to optimize the device architecture by simultaneously optimizing the optical and electrical characteristics, which leads to a detailed understanding of plasmonic PV cells from a design perspective and offers an advanced tool for rapid device prototyping.