Impressive Radiation Stability of Organic Solar Cells Based on Fullerene Derivatives and Carbazole-Containing Conjugated Polymersстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 1 августа 2019 г.
Аннотация:We explored the radiation stability of carbazole-based electron donor conjugated polymers, acceptor fullerene derivative [60]PCBM and their blends as active layer components of organic solar cells. Gamma rays induced evident degradation effects in bulk samples of the pristine fullerene acceptor ([60]PCBM) and two investigated electron-donor conjugated polymers: PCDTBT and PCDTTBTBTT. The most severe radiation damage occur in [60]PCBM as can be concluded from the significant losses in open circuit voltage, fill factor and efficiency of photovoltaic devices comprising the exposed fullerene acceptor. Conjugated polymers PCDTBT and PCDTTBTBTT showed substantially different radiation stabilities: the samples of PCDTTBTBTT exposed to 200 Gy lost ~25% of their nominal photovoltaic efficiency due to a substantial decay of all device parameters, while PCDTBT alone showed just minor aging under the same conditions. The fullerene-polymer composites were much more resistant with respect to the radiation damage as compare