Wavelength Response Analysis and Optimization of Photopolymer Volume Holographic Elements for Solar Energy Applications
Holograms as spectrum splitting concentrator elements are achieving high relevance in improving overall efficiency of photovoltaic systems. Photopolymer holographic elements have the added advantages of near hundred percent diffraction efficiency, easy recording and handling, lower cost etc. Along with high diffraction efficiency, achieving optimum spectral response is of critical importance here. This paper reports recording of volume holographic elements of 91% optimum diffraction efficiency at 639 nm and the spectral and angular response studies conducted.
Partial financial support from the Board of Research in Fusion Science and Technology (BRFST), Department of Atomic Energy, Government of India, is gratefully acknowledged.
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