Comparison of absorption simulation in semiconductor nanowire and nanocone arrays with the Fourier modal method, the finite element method, and the finite-difference time-domain method

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2020
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Language
en
Pages
12
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Nano Express, Volume 1
Abstract
For the design of nanostructured semiconductor solar cells and photodetectors, optics modelling can be a useful tool that reduces the need of time-consuming and costly prototyping. We compare the performance of three of the most popular numerical simulation methods for nanostructure arrays: the Fourier modal method (FMM), the finite element method (FEM) and the finite-difference time-domain (FDTD) method. The difference between the methods in computational time can be three orders of magnitude or more for a given system. The preferential method depends on the geometry of the nanostructures, the accuracy needed from the simulations, whether we are interested in the total, volume-integrated absorption or spatially resolved absorption, and whether we are interested in broadband or narrowband response. Based on our benchmarking results, we provide guidance on how to choose the method.
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Keywords
optics simulation, Fourier modal method (FMM), finite element method (FEM), finite-difference time-domain (FDTD) method, absorption, nanostructure array
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Anttu , N , Mäntynen , H , Sadi , T , Matikainen , A , Turunen , J & Lipsanen , H 2020 , ' Comparison of absorption simulation in semiconductor nanowire and nanocone arrays with the Fourier modal method, the finite element method, and the finite-difference time-domain method ' , Nano Express , vol. 1 , 030034 . https://doi.org/10.1088/2632-959X/abd0d6