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Theoretical investigation of phenylene-based materials in their pristine and doped state

机译:原始和掺杂状态的亚苯基材料的理论研究

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Phenylene-based organic materials play an important role in organic device technology, especially in light emitting diodes and displays. We have investigated their geometries and optical transitions in both pristine and doped states, paying special attention to chain-length effects as well as to the implications of inter-ring twists considering also bridged ladder type molecules. Our calculations give an extent of four benzene rings for the geometry modifications associated with the formation of polarons and six to eight rings for bipolarons. We calculate two sub-gap absorption features for polarons in short-chain molecules and a single peak for bipolarons. In longer chains and for interacting bipolarons, this situation changes considerably within the theoretical framework we use.
机译:苯基有机材料在有机器件技术中,特别是在发光二极管和显示器中,起着重要的作用。我们已经研究了它们在原始状态和掺杂状态下的几何形状和光学跃迁,并特别注意链长效应以及考虑桥间梯形分子的环间扭曲的影响。我们的计算为与极化子的形成相关的几何形状修饰提供了四个苯环,为双极化子提供了六至八个环。我们计算了短链分子中极化子的两个子隙吸收特征,以及双极化子的一个峰。在更长的链中以及为了相互作用的双极子,这种情况在我们使用的理论框架内发生了很大变化。

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