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- W2945122560 abstract "Organic photovoltaics are a sustainable and cost-effective power-generation technology that may aid the move to zero-emission buildings, carbon neutral cities, and electric vehicles. While state-of-the-art organic photovoltaic devices can be encapsulated to withstand air and moisture, they are currently still susceptible to light-induced degradation, leading to a decline in the long-term efficiency of the devices. In this study, the role of ultraviolet (UV) radiation on a multilayer organic photovoltaic device is systematically uncovered using spectral filtering. By applying long-pass filters to remove different parts of the UV portion of the AM1.5G spectrum, two main photodegradation processes are shown to occur in the organic photovoltaic devices. A UV-activated process is found to cause a significant decrease in the photocurrent across the whole spectrum and is most likely linked to the deterioration of the charge extraction layers. In addition, a photodegradation process caused by UV-filtered sunlight is found to change the micromorphology of the bulk heterojunction material, leading to a reduction in photocurrent at high photon energies. These findings strongly suggest that the fabrication of inherently photostable organic photovoltaic devices will require the replacement of fullerene-based electron transporter materials with alternative organic semiconductors." @default.
- W2945122560 created "2019-05-29" @default.
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- W2945122560 date "2019-05-24" @default.
- W2945122560 modified "2023-10-11" @default.
- W2945122560 title "Effect of Ultraviolet Radiation on Organic Photovoltaic Materials and Devices" @default.
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- W2945122560 doi "https://doi.org/10.1021/acsami.9b04828" @default.
- W2945122560 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7007002" @default.
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- W2945122560 hasPublicationYear "2019" @default.
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