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We propose a methodology allowing the design of the active layer of organic solar cells in the shape of a photonic crystal. An optimised photonic crystal allows trapping the light in a layer at specific wavelengths thanks to a coupling of a low group velocity mode called slow Bloch mode. This method is used to design two structures which allow to improve absorption of light in organic solar cells...
Degradation due to electrical and optical stresses on organic semiconductor devices fabricated with imidazolin-5-one as an active layer is studied in this letter. It is found that while both electrical and optical stresses degrade device performance, the former leads to much faster degradation as compared with the latter. It is found that in electrical-stress degradation, the drop in current is a...
(BEHP-PPV)-co-(MEH-PPV) is a highly soluble copolymer, more stable to photo-oxidation process than other phenyl-substituted PPV derivatives, which is appropriate to use as the active layer in organic-based light emitting devices (OLEDs). In this paper we present optical properties such as the refractive index, the extinction coefficient, and the optical gap between HOMO and LUMO levels of these polymer...
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