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Photonic crystal enhanced light-trapping in thin film solar cells
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10.1063/1.2908212
/content/aip/journal/jap/103/9/10.1063/1.2908212
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/9/10.1063/1.2908212
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Absorption length of photons as a function of wavelength for with bandgap . The band edge wavelength is indicated by the arrow.

Image of FIG. 2.
FIG. 2.

(a) Schematic solar cell configuration with top ITO, 2D PC, bottom ITO, and DBR. (b) Top view of 2D PC grating layer with cylinders in an ITO background.

Image of FIG. 3.
FIG. 3.

Fourier component of the dielectric function and filling ratio, for the first reciprocal lattice vector .

Image of FIG. 4.
FIG. 4.

(a) The variation in average absorption with thickness of the photonic crystal , holding other parameters constant near the optimum values. (b) The average absorption as a function of , for several values of the grating depth .

Image of FIG. 5.
FIG. 5.

The variation in average absorption with lattice spacing of the photonic crystal, holding other parameters constant near the optimum values.

Image of FIG. 6.
FIG. 6.

The variation in average absorption with cylinder radius of the photonic crystal, holding other parameters constant near the optimum values.

Image of FIG. 7.
FIG. 7.

(a) The absorption of the optimized photonic crystal enhanced solar cell structure as a function of the wavelength, compared to the reference cell with antireflective coating and DBR only. (b) The absorption enhancement ratio of the optimized solar cell over the reference cell without the photonic crystal. (c) The ratio of the optical path length to the absorber layer thickness, for the optimized PC enhanced solar cell (solid) compared to the reference cell (dotted). The horizontal dashed line shows the theoretical limit of path length enhancement from a randomly roughened backreflector .

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/content/aip/journal/jap/103/9/10.1063/1.2908212
2008-05-01
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Photonic crystal enhanced light-trapping in thin film solar cells
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/9/10.1063/1.2908212
10.1063/1.2908212
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