We study polarization independent improved light trapping in commercial thin film hydrogenated amorphous silicon (a-Si:H) solar photovoltaic cells using a three-dimensional silver array of multi-resonant nano-disk structures embedded in a silicon nitride anti-reflection coating to enhance optical absorption in the intrinsic layer (i-a-Si:H) for the visible spectrum for any polarization angle. Predicted total optical enhancement (OE) in absorption in the i-a-Si:H for AM-1.5 solar spectrum is 18.51% as compared to the reference, and producing a 19.65% improvement in short-circuit current density (JSC) over 11.7 mA/cm2 for a reference cell. The JSC in the nano-disk patterned solar cell (NDPSC) was found to be higher than the commercial reference structure for any incident angle. The NDPSC has a multi-resonant optical response for the visible spectrum and the associated mechanism for OE in i-a-Si:H layer is excitation of Fabry-Perot resonance facilitated by surface plasmon resonances. The detrimental Staebler-Wronski effect in a-Si:H solar cell can be minimized by the additional OE in the NDPSC and self-annealing of defect states by additional heat generation, thus likely improving the overall stabilized characteristics of a-Si:H solar cells.
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7 September 2014
Research Article|
September 05 2014
Multi-resonant silver nano-disk patterned thin film hydrogenated amorphous silicon solar cells for Staebler-Wronski effect compensation Available to Purchase
Ankit Vora;
Ankit Vora
1Department of Electrical and Computer Engineering,
Michigan Technological University
, Houghton, Michigan 49931, USA
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Jephias Gwamuri;
Jephias Gwamuri
2Department of Materials Science and Engineering,
Michigan Technological University
, Houghton, Michigan 49931, USA
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Joshua M. Pearce;
Joshua M. Pearce
1Department of Electrical and Computer Engineering,
Michigan Technological University
, Houghton, Michigan 49931, USA
2Department of Materials Science and Engineering,
Michigan Technological University
, Houghton, Michigan 49931, USA
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Paul L. Bergstrom;
Paul L. Bergstrom
1Department of Electrical and Computer Engineering,
Michigan Technological University
, Houghton, Michigan 49931, USA
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Durdu Ö. Güney
Durdu Ö. Güney
a)
1Department of Electrical and Computer Engineering,
Michigan Technological University
, Houghton, Michigan 49931, USA
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Ankit Vora
1
Jephias Gwamuri
2
Joshua M. Pearce
1,2
Paul L. Bergstrom
1
Durdu Ö. Güney
1,a)
1Department of Electrical and Computer Engineering,
Michigan Technological University
, Houghton, Michigan 49931, USA
2Department of Materials Science and Engineering,
Michigan Technological University
, Houghton, Michigan 49931, USA
a)
Author to whom correspondence should be addressed. Electronic mail: [email protected]
J. Appl. Phys. 116, 093103 (2014)
Article history
Received:
July 10 2014
Accepted:
August 28 2014
Citation
Ankit Vora, Jephias Gwamuri, Joshua M. Pearce, Paul L. Bergstrom, Durdu Ö. Güney; Multi-resonant silver nano-disk patterned thin film hydrogenated amorphous silicon solar cells for Staebler-Wronski effect compensation. J. Appl. Phys. 7 September 2014; 116 (9): 093103. https://doi.org/10.1063/1.4895099
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