High efficiency of organic photovoltaic device by the energy conversion layer

2015 
We propose an organic photovoltaic (OPV) device with the energy conversion layer. In this structure, the energy conversion layer is formed on the outer surface of the conventional P3HT:PCBM solar cells. Rubrene layer is used for the spectral down-conversion layer. Rubrene layer absorbs the ultraviolet light and re-emits visible light, wavelengths of which coincide with the optical absorption spectrum range of the photoactive layer of the solar cell. In this paper, the thickness effects of the energy conversion layer on the energy conversion efficiency of the OPV device were demonstrated. Considerable increase about 1.5 times in the efficiency was achieved.
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