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Angular and prism coupling refractive enhancement in dye solar cells
4.S. Kim, J. K. Lee, S. O. Kang, J. Ko, J. -H. Yum, S. Fantacci, F. De Angelis, D. Di Censo, M. K. Nazeeruddin, and M. Grätzel, J. Am. Chem. Soc. 128, 16701 (2006).
25.Hence the same is valid for the whole range, fixed by the experimental setup, which splits into two different ranges without and with prism .
27. is the photon flux density over the illuminated titania area and the external incident one. .
28.Under solar illumination, may contribute to larger enhancements for specific DSCs.
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We quantify the strong dependence of photocurrent on the angle of incidence of light in a dye solar cell (DSC). Under laser illumination the photocurrent increases for large incidence angles. The enhancements are different upon using or not a coupling prism. They are explained with a model including three different angular factors. The observed enhancements up to 25% can be useful for evaluating novel designs of an efficient photon management in DSCs. Even an effective refractive index for the mesoporous titania/electrolyte phase was retrieved from the angle dependent photocurrent.
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