AI Article Synopsis
- Researchers developed a three-dimensional assembly of nanoparticles to enhance light harvesting in nanocrystalline silicon thin-film solar cells.
- The unique structuring generates multiple plasmon resonances, boosting light scattering and absorption over a broad spectrum (350-1100 nm).
- This innovation resulted in significant efficiency gains, with a 22% increase compared to flat cells and 11% compared to cells with nanoparticle clusters, supported by simulations confirming these enhancements are due to the plasmon resonances.
Article Abstract
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 multi-pin 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.
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| http://dx.doi.org/10.1088/0957-4484/27/5/055403 | DOI Listing |
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