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Enhanced evanescent mode light trapping in organic solar cells and other low index optoelectronic devices
Author(s) -
Green Martin A.
Publication year - 2011
Publication title -
progress in photovoltaics: research and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.286
H-Index - 131
eISSN - 1099-159X
pISSN - 1062-7995
DOI - 10.1002/pip.1038
Subject(s) - trapping , optoelectronics , cadmium telluride photovoltaics , refractive index , materials science , semiconductor , dielectric , limit (mathematics) , quantum tunnelling , organic semiconductor , optics , physics , mathematical analysis , mathematics , biology , ecology
A new light‐trapping scheme is described based on tunnelling evanescent waves. The scheme is particularly suitable for low index materials such as organic solar cells and polar inorganic semiconductors such as CdTe, or dielectric layers containing, for example, upconverters. The 4 n 2 macroscopic limit on light trapping, where n is refractive index, can be exceeded by a large margin using the new scheme. Copyright © 2010 John Wiley & Sons, Ltd.