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OPTICS OF CONCENTRATORS 493<br />

Solar cell<br />

Mirror<br />

1<br />

2<br />

3<br />

4<br />

1<br />

2<br />

3<br />

4<br />

1 Superstrate<br />

2 First stage<br />

3 Second stage<br />

4 Solar cells<br />

1<br />

2<br />

Figure 11.34 A combination of concentrators achieving 12X concentration. (a) 2X trough;<br />

(b) dielectric CPC; and (c) the combination. Goetzberger A, Static Concentration Systems with<br />

Enhance Light Concentration, 20 th IEEE Photovoltaic Specialists Conference © 1988 IEEE<br />

2<br />

(b)<br />

(c)<br />

(a)<br />

Figure 11.35 Static concentrator using bifacial cells with dielectric prisms. Bowden S, High Efficiency<br />

Photovoltaic Roof Tiles with Static Concentrators, First World Conference on Photovoltaic<br />

Energy Conversion © 1994 IEEE

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