Effective light trapping in c-Si thin-film solar cells with a dual-layer split grating

We propose a dual-layer split nanograting structure in crystalline silicon thin-film solar cells (TFSCs). The split nanograting is designed by introducing two partitioning factors and split times. By employing the finite-difference time-domain method, the light trapping performance and relevant para...

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Published in:Applied optics (2004) 2021-11, Vol.60 (33), p.10312
Main Authors: Chen, Ke, Zheng, Nianhong, Wu, Sheng, He, Jinyang, Yu, Yingchun, Zheng, Hongmei
Format: Article
Language:English
Subjects:
Circuits
Electromagnetic absorption
Finite difference time domain method
Numerical analysis
Photovoltaic cells
Planar structures
Short circuit currents
Silicon films
Solar cells
Thin films
Trapping
Waveguides
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cited_by cdi_FETCH-LOGICAL-c220t-74067addf6594c9f77e895a6b9e7297a956f60b463708f8620e5026d8e57012c3
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container_issue 33
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container_title Applied optics (2004)
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creator Chen, Ke
Zheng, Nianhong
Wu, Sheng
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description We propose a dual-layer split nanograting structure in crystalline silicon thin-film solar cells (TFSCs). The split nanograting is designed by introducing two partitioning factors and split times. By employing the finite-difference time-domain method, the light trapping performance and relevant parameters of TFSCs are analyzed and optimized. Numerical computation of optical and electrical simulation shows that the optimal dual-layer split nanograting structure has demonstrated great enhanced light absorption compared with the planar structure. Enhancement of the light trapping effect is associated with light coupling to waveguide modes. The short-circuit current density is reached at 21.66 m A / c m 2 with an improvement of 54.6% over the planar structure. All results provide a parting thought for the design of TFSC grating structures.
doi_str_mv 10.1364/AO.443307
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subjects Circuits
Electromagnetic absorption
Finite difference time domain method
Numerical analysis
Photovoltaic cells
Planar structures
Short circuit currents
Silicon films
Solar cells
Thin films
Trapping
Waveguides
title Effective light trapping in c-Si thin-film solar cells with a dual-layer split grating
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