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    Biomimetic spiral grating for stable and highly efficient absorption in crystalline silicon thin-film solar cells

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    Type
    Article
    Authors
    Hou, Jin
    Hong, Wei
    Li, Xiaohang cc
    Yang, Chunyong
    Chen, Shaoping
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Date
    2017-09-12
    Online Publication Date
    2017-09-12
    Print Publication Date
    2017-10-02
    Permanent link to this record
    http://hdl.handle.net/10754/625767
    
    Metadata
    Show full item record
    Abstract
    By emulating the phyllotaxis structure of natural plants, which has an efficient and stable light capture capability, a two-dimensional spiral grating is introduced on the surface of crystalline silicon solar cells to obtain both efficient and stable light absorption. Using the rigorous coupled wave analysis method, the absorption performance on structural parameter variations of spiral gratings is investigated firstly. Owing to diffraction resonance and excellent superficies antireflection, the integrated absorption of the optimal spiral grating cell is raised by about 77 percent compared with the conventional slab cell. Moreover, though a 15 percent deviation of structural parameters from the optimal spiral grating is applied, only a 5 percent decrease of the absorption is observed. This reveals that the performance of the proposed grating would tolerate large structural variations. Furthermore, the angular and polarization dependence on the absorption of the optimized cell is studied. For average polarizations, a small decrease of only 11 percent from the maximum absorption is observed within an incident angle ranging from −70 to 70 degrees. The results show promising application potentials of the biomimetic spiral grating in the solar cell.
    Citation
    Hou J, Hong W, Li X, Yang C, Chen S (2017) Biomimetic spiral grating for stable and highly efficient absorption in crystalline silicon thin-film solar cells. Optics Express 25: A922. Available: http://dx.doi.org/10.1364/oe.25.00a922.
    Sponsors
    National Natural Science Foundation of China (NSFC) (11504435, 11147014); Natural Science Foundation of Hubei Province (2013CFA052); Baseline BAS/1/1664-01-01 from KAUST.
    Publisher
    The Optical Society
    Journal
    Optics Express
    DOI
    10.1364/oe.25.00a922
    Additional Links
    https://www.osapublishing.org/oe/abstract.cfm?uri=oe-25-20-A922
    ae974a485f413a2113503eed53cd6c53
    10.1364/oe.25.00a922
    Scopus Count
    Collections
    Articles; Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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