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Type Paper
Cite as Citation reference for the source document. A. Vora, J. Gwamuri, N. Pala, A. Kulkarni, J.M. Pearce, and D. Ö. Güney, "Exchanging ohmic losses in metamaterial absorbers with useful optical absorption for photovoltaics," Sci. Rep. 4, 4901 (2014). doi:10.1038/srep04901 arxiv preprint
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Authors A. Vora
J. Gwamuri
N. Pala
A. Kulkarni
D. Ö. Güney
Joshua M. Pearce
Location Michigan, USA
Status Designed
Prototyped
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Using metamaterial absorbers, we have shown that metallic layers in the absorbers do not necessarily constitute undesired resistive heating problem for photovoltaics. Tailoring the geometric skin depth of metals and employing the natural bulk absorbance characteristics of the semiconductors in those absorbers can enable the exchange of undesired resistive losses with the useful optical absorbance in the active semiconductors. Thus, Ohmic loss dominated metamaterial absorbers can be converted into photovoltaic near-perfect absorbers with the advantage of harvesting the full potential of light management offered by the metamaterial absorbers. Based on experimental permittivity data for indium gallium nitride, we have shown that between 75%-95% absorbance can be achieved in the semiconductor layers of the converted metamaterial absorbers. Besides other metamaterial and plasmonic devices, our results may also apply to photodectors and other metal or semiconductor based optical devices where resistive losses and power consumption are important pertaining to the device performance.

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Keywords photovoltics, metamaterial absorbers, exchanging ohmic losses
SDG SDG07 Affordable and clean energy
Authors Joshua M. Pearce
License CC-BY-SA-3.0
Organizations MOST, MTU
Language English (en)
Related 0 subpages, 4 pages link here
Impact 313 page views
Created May 3, 2014 by Joshua M. Pearce
Modified February 23, 2024 by Maintenance script
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