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Broadband optical absorption enhancement in silicon nanofunnel arrays for photovoltaic applications
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10.1063/1.4723850
/content/aip/journal/apl/100/22/10.1063/1.4723850
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/22/10.1063/1.4723850
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Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic illustration of SiNH array. (b) Wavelength dependence of absorption spectra of SiNH arrays with different the lattice constants L and hole diameters D at fixed filling factor f= 0.5. (c) Schematic illustration of SiNF array. (d) Comparison of calculated absorption spectra of SiNF and optimized SiNH arrays. The filling fraction and the lattice constant are 0.5 and 500 nm, respectively.

Image of FIG. 2.
FIG. 2.

(a) Ultimate efficiencies of SiNF and SiNH arrays at various lattice constants and filling fractions. (b) The effective refractive indices of SiNF and SiNH arrays as a function of the thickness at fixed lattice constant of 900 nm.

Image of FIG. 3.
FIG. 3.

(a) Wavelength dependence of absorption spectra of SiNF arrays with different lattice constants at fixed filling fraction f = 0.78. (b) Absorption enhancement spectra of SiNF array generated by normalizing the absorption ANF(λ) of SiNF array to the absorption ANH(λ) of SiNH array.

Image of FIG. 4.
FIG. 4.

Comparison of calculated absorption spectra of SiNF arrays with and without 72 nm thick Al2O3 AR film.

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/content/aip/journal/apl/100/22/10.1063/1.4723850
2012-05-29
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Broadband optical absorption enhancement in silicon nanofunnel arrays for photovoltaic applications
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/22/10.1063/1.4723850
10.1063/1.4723850
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