Abstract

The efficiency of photovoltaic generators based on different semiconductor materials with optimized band gaps can achieve considerably higher values than those contained with single-junction solar cells. A new type of concentrating system is presented which allows high concentration and simultaneous splitting of the spectral region. This dispersive and concentrating (DISCO) system is based on volume phase transmission holograms which exhibit minimum absorption, high diffraction efficiency, and adjustable dispersion. The spectral imaging properties of volume phase transmission holograms can be optimized with respect to the requirements for solar applications.

© 1982 Optical Society of America

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References

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  1. N. A. Gokcen, J. J. Loferski, Sol. Energy Mat. 1, 271 (1979).
    [Crossref]
  2. H. A. Vander Plas, R. L. Moon, L. W. James, T. O. Yep, R. R. Fulks, in Proceedings, Second E. C. Photovoltaic Solar Energy Conference (D. Reidel, Berlin, 1979), p. 515.
  3. G. Sassi, Sol. Energy 24, 451 (1980).
    [Crossref]
  4. B. J. Chang, C. D. Leonard, Appl. Opt. 18, 2407 (1979).
    [Crossref] [PubMed]
  5. H. Kogelnik, Bell Syst. Tech. J. 48, 2909 (1968).
  6. D. H. Close, G. E. Moss, J. Opt. Soc. Am. 63, 1324 (1973).
  7. R. Alferness, S. K. Case, J. Opt. Soc. Am. 65, 730 (1975).
    [Crossref]

1980 (1)

G. Sassi, Sol. Energy 24, 451 (1980).
[Crossref]

1979 (2)

B. J. Chang, C. D. Leonard, Appl. Opt. 18, 2407 (1979).
[Crossref] [PubMed]

N. A. Gokcen, J. J. Loferski, Sol. Energy Mat. 1, 271 (1979).
[Crossref]

1975 (1)

1973 (1)

D. H. Close, G. E. Moss, J. Opt. Soc. Am. 63, 1324 (1973).

1968 (1)

H. Kogelnik, Bell Syst. Tech. J. 48, 2909 (1968).

Alferness, R.

Case, S. K.

Chang, B. J.

Close, D. H.

D. H. Close, G. E. Moss, J. Opt. Soc. Am. 63, 1324 (1973).

Fulks, R. R.

H. A. Vander Plas, R. L. Moon, L. W. James, T. O. Yep, R. R. Fulks, in Proceedings, Second E. C. Photovoltaic Solar Energy Conference (D. Reidel, Berlin, 1979), p. 515.

Gokcen, N. A.

N. A. Gokcen, J. J. Loferski, Sol. Energy Mat. 1, 271 (1979).
[Crossref]

James, L. W.

H. A. Vander Plas, R. L. Moon, L. W. James, T. O. Yep, R. R. Fulks, in Proceedings, Second E. C. Photovoltaic Solar Energy Conference (D. Reidel, Berlin, 1979), p. 515.

Kogelnik, H.

H. Kogelnik, Bell Syst. Tech. J. 48, 2909 (1968).

Leonard, C. D.

Loferski, J. J.

N. A. Gokcen, J. J. Loferski, Sol. Energy Mat. 1, 271 (1979).
[Crossref]

Moon, R. L.

H. A. Vander Plas, R. L. Moon, L. W. James, T. O. Yep, R. R. Fulks, in Proceedings, Second E. C. Photovoltaic Solar Energy Conference (D. Reidel, Berlin, 1979), p. 515.

Moss, G. E.

D. H. Close, G. E. Moss, J. Opt. Soc. Am. 63, 1324 (1973).

Sassi, G.

G. Sassi, Sol. Energy 24, 451 (1980).
[Crossref]

Vander Plas, H. A.

H. A. Vander Plas, R. L. Moon, L. W. James, T. O. Yep, R. R. Fulks, in Proceedings, Second E. C. Photovoltaic Solar Energy Conference (D. Reidel, Berlin, 1979), p. 515.

Yep, T. O.

H. A. Vander Plas, R. L. Moon, L. W. James, T. O. Yep, R. R. Fulks, in Proceedings, Second E. C. Photovoltaic Solar Energy Conference (D. Reidel, Berlin, 1979), p. 515.

Appl. Opt. (1)

Bell Syst. Tech. J. (1)

H. Kogelnik, Bell Syst. Tech. J. 48, 2909 (1968).

J. Opt. Soc. Am. (2)

D. H. Close, G. E. Moss, J. Opt. Soc. Am. 63, 1324 (1973).

R. Alferness, S. K. Case, J. Opt. Soc. Am. 65, 730 (1975).
[Crossref]

Sol. Energy (1)

G. Sassi, Sol. Energy 24, 451 (1980).
[Crossref]

Sol. Energy Mat. (1)

N. A. Gokcen, J. J. Loferski, Sol. Energy Mat. 1, 271 (1979).
[Crossref]

Other (1)

H. A. Vander Plas, R. L. Moon, L. W. James, T. O. Yep, R. R. Fulks, in Proceedings, Second E. C. Photovoltaic Solar Energy Conference (D. Reidel, Berlin, 1979), p. 515.

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Figures (8)

Fig. 1
Fig. 1

Recording of gratings and off-axis zone plates

Fig. 2
Fig. 2

Diffraction efficiency of a DCG hologram: (a) exposure energy 10 mJ/cm2; (b) exposure energy 50 mJ/cm2.

Fig. 3
Fig. 3

Spectral bandwidth Δλ for a 15 μm-thick layer as a function of recording angle α.

Fig. 4
Fig. 4

Calculated values for the diffraction efficiency according to Fig. 2(b).

Fig. 5
Fig. 5

Deflection of light passing over an encapsulated grating.

Fig. 6
Fig. 6

Diffraction efficiency of a doubly exposed zone plate.

Fig. 7
Fig. 7

Optical waveguide hologram.

Fig. 8
Fig. 8

Example of a DISCO system.

Equations (7)

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λ B = 2 Λ sin θ B .
η = sin 2 ξ 2 + ν 2 1 + ξ 2 ν 2 , ν = π Δ n d λ cos θ ( cos θ - λ n Λ cos Φ ) , ξ = ( 2 cos ( Φ - θ ) - λ n Λ ) π · d 2 Λ ( cos θ - λ n Λ cos Φ ) ,
η max = 1 = sin 2 ν = sin 2 ( π Δ n d λ B cos θ B ) ,
Δ n = λ B cos θ B 2 d ,
Δ n = n Λ sin 2 θ B 2 d .
λ = g ( sin θ - sin β ) .
g ( 1 - sin θ ) < λ < g ( n - sin θ ) .

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