A light-trapping strategy for nanocrystalline silicon thin-film solar cells using three-dimensionally assembled nanoparticle structures

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We report three-dimensionally assembled nanoparticle structures inducing multiple plasmon resonances for broadband light harvesting in nanocrystalline silicon (nc-Si:H) thin-film solar cells. A three-dimensional multiscale (3DM) assembly of nanoparticles generated using a multipin spark discharge method has been accomplished over a large area under atmospheric conditions via ion-assisted aerosol lithography. The multiscale features of the sophisticated 3DM structures exhibit surface plasmon resonances at multiple frequencies, which increase light scattering and absorption efficiency over a wide spectral range from 350-1100 nm. The multiple plasmon resonances, together with the antireflection functionality arising from the conformally deposited top surface of the 3D solar cell, lead to a 22% and an 11% improvement in power conversion efficiency of the nc-Si:H thin-film solar cells compared to flat cells and cells employing nanoparticle clusters, respectively. Finite-difference time-domain simulations were also carried out to confirm that the improved device performance mainly originates from the multiple plasmon resonances generated from three-dimensionally assembled nanoparticle structures.
Publisher
IOP PUBLISHING LTD
Issue Date
2016-02
Language
English
Article Type
Article
Keywords

BACK SURFACE REFLECTORS; AG NANOWIRE; LITHOGRAPHY; ENHANCEMENT; PERFORMANCE; TECHNOLOGY; ABSORPTION; PLASMONICS; ELECTRODES; SINGLE

Citation

NANOTECHNOLOGY, v.27, no.5

ISSN
0957-4484
DOI
10.1088/0957-4484/27/5/055403
URI
http://hdl.handle.net/10203/214315
Appears in Collection
EE-Journal Papers(저널논문)
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