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Content Provider | SpringerLink |
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Author | Rao, Jing Varlamov, Sergey Park, Jongsung Dligatch, Svetlana Chtav, Anatoli |
Copyright Year | 2012 |
Abstract | Surface plasmonic-enhanced light trapping from metal nanoparticles is a promising way of increasing the light absorption in the active silicon layer and, therefore, the photocurrent of the silicon solar cells. In this paper, we applied silver nanoparticles on the rear side of polycrystalline silicon thin film solar cell and systematically studied the dielectric environment effect on the absorption and short-circuit current density (Jsc) of the device. Three different dielectric layers, magnesium fluoride (MgF$_{2}$, n = 1.4), tantalum pentoxide (Ta$_{2}$O$_{5}$, n = 2.2), and titanium dioxide (TiO$_{2}$, n = 2.6), were investigated. Experimentally, we found that higher refractive index dielectric coatings results in a redshift of the main plasmonic extinction peak and higher modes were excited within the spectral region that is of interest in our thin film solar cell application. The optical characterization shows that nanoparticles coated with highest refractive index dielectric TiO$_{2}$ provides highest absorption enhancement 75.6 %; however, from the external quantum efficiency characterization, highest short-circuit current density Jsc enhancement of 45.8 % was achieved by coating the nanoparticles with lower refractive index MgF$_{2}$. We also further optimize the thickness of MgF$_{2}$ and a final 50.2 % Jsc enhancement was achieved with a 210-nm MgF$_{2}$ coating and a back reflector. |
Starting Page | 785 |
Ending Page | 791 |
Page Count | 7 |
File Format | |
ISSN | 15571955 |
Journal | Plasmonics |
Volume Number | 8 |
Issue Number | 2 |
e-ISSN | 15571963 |
Language | English |
Publisher | Springer US |
Publisher Date | 2012-12-21 |
Publisher Place | Boston |
Access Restriction | Subscribed |
Subject Keyword | Surface plasmons Silver nanoparticles Light trapping Silicon thin film solar cell Biotechnology Nanotechnology Biophysics and Biological Physics Biochemistry |
Content Type | Text |
Resource Type | Article |
Subject | Biochemistry Nanoscience and Nanotechnology Biophysics Biotechnology |
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