材料科学
电介质
共轭体系
聚合物
微电子
偶极子
光电子学
高分子化学
化学物理
化学工程
有机化学
复合材料
化学
工程类
作者
Pierre Boufflet,Gianluca Bovo,Luca Occhi,Hua‐Kang Yuan,Zhuping Fei,Yang Han,Thomas D. Anthopoulos,Paul N. Stavrinou,Martin Heeney
标识
DOI:10.1002/aelm.201700375
摘要
Abstract The ability to modify or enhance the dielectric constant of semiconducting polymers can prove valuable for a range of optoelectronic and microelectronic applications. In the case of organic photovoltaics, increasing the dielectric constant of the active layer has often been suggested as a method to control charge generation, recombination dynamics, and ultimately, the power conversion efficiencies. In this contribution, the impact that the degree and pattern of fluorination has on the dielectric constant of poly(3‐octylthiophene) (P3OT), a more soluble analogue of the widely studied conjugated material poly(3‐hexylthiophene), is explored. P3OT and its backbone‐fluorinated analogue, F‐P3OT, are compared along with a block and alternating copolymer version of these materials. It is found that the dielectric constant of the polymer thin films increases as the degree of backbone fluorination increases, in a trend consistent with density functional theory calculations of the dipole moment.
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