Measuring Reduced C60 Diffusion in Crosslinked Polymer Films by Optical Spectroscopy
Measuring Reduced C60 Diffusion in Crosslinked Polymer Films by Optical Spectroscopy
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DOI：
10.1002/adfm.201401153
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发表时间：
2014-10
影响因子：
19
通讯作者：
Florian S. U. Fischer;T. Hahn;H. Bässler;I. Bauer;P. Strohriegl;A. Köhler
中科院分区：
文献类型：
--
作者：
Florian S. U. Fischer;T. Hahn;H. Bässler;I. Bauer;P. Strohriegl;A. Köhler
富勒烯如C60和PCBM在有机半导体中的扩散是控制有机太阳能电池效率的关键因素，尽管测量和控制具有挑战性。开发了一种基于光致发光猝灭的简单光学方法，以评估猝灭剂分子如C60通过半导体聚合物膜的扩散，在这种情况下，用聚合物聚芴制成。当通过化学交联降低聚合物链的流动性时，C60的扩散系数可以降低多达三个数量级。
The diffusion of fullerenes such as C60 and PCBM in organic semiconductors is a key factor in controlling the efficiency of organic solar cells, though it is challenging to measure and to control. A simple optical method based on photoluminescence quenching is developed to assess the diffusion of a quencher molecule such as C60 through a semiconducting polymer film, in this case made with the polymer polyfluorene. When the mobility of the polymer chains is reduced by chemical crosslinking, the diffusion coefficient of C60 can be reduced by up to three orders of magnitude.