• Acta Physica Sinica
  • Vol. 68, Issue 17, 177201-1 (2019)
Wen-Jing Wang1、*, Chong Li2, Mao-Mao Zhang2, and Kun Gao2、*
Author Affiliations
  • 1Institute of Physics and Electronic Engineering, Qilu Normal University, Jinan 250013, China
  • 2School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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    DOI: 10.7498/aps.68.20190432 Cite this Article
    Wen-Jing Wang, Chong Li, Mao-Mao Zhang, Kun Gao. Dynamical study of ultrafast exciton migration in coujugated polymers driven by nonuniform field[J]. Acta Physica Sinica, 2019, 68(17): 177201-1 Copy Citation Text show less
    Schematic diagram about the position of a confined charge (q = ) relative to the polymer chain, d shows the distance between the charge and the right chain-end; the curve describes the distribution of the induced electric field E along the polymer chain with the case of d = 3 nm, where the minus sign means that the direction of the electric field is opposite to that of the chain.受限正电荷 (电荷量为)相对于聚合物链的位置, d为电荷与链右端点的距离; 曲线为d = 3 nm时电场强度沿分子链的分布, 负号表示电场的方向与分子链的正方向相反
    Fig. 1. Schematic diagram about the position of a confined charge (q = ) relative to the polymer chain, d shows the distance between the charge and the right chain-end; the curve describes the distribution of the induced electric field E along the polymer chain with the case of d = 3 nm, where the minus sign means that the direction of the electric field is opposite to that of the chain. 受限正电荷 (电荷量为 )相对于聚合物链的位置, d为电荷与链右端点的距离; 曲线为d = 3 nm时电场强度沿分子链的分布, 负号表示电场的方向与分子链的正方向相反
    Time evolution about the lattice configuration of an exciton in a polymer chain driven by a nonuniform electric field with d = 3 nm, where the exciton is initially generated at a central position of nc = 30.激子在非均匀电场(d = 3 nm)驱动下沿聚合物链超快输运对应的晶格动力学演化, 其初始产生时的中心位置为nc = 30
    Fig. 2. Time evolution about the lattice configuration of an exciton in a polymer chain driven by a nonuniform electric field with d = 3 nm, where the exciton is initially generated at a central position of nc = 30. 激子在非均匀电场(d = 3 nm)驱动下沿聚合物链超快输运对应的晶格动力学演化, 其初始产生时的中心位置为nc = 30
    Variation of the driving force F as a function of the time. The inset presents the polarized positive charges and negative charges in the exciton at the time t = 1000 fs.非均匀电场诱导激子输运的驱动力F随时间的变化; 插图为t = 1000 fs时激子内极化的正电荷与负电荷的分布
    Fig. 3. Variation of the driving force F as a function of the time. The inset presents the polarized positive charges and negative charges in the exciton at the time t = 1000 fs. 非均匀电场诱导激子输运的驱动力F随时间的变化; 插图为t = 1000 fs时激子内极化的正电荷与负电荷的分布
    Time evolution of the exciton center nc along the polymer chain driven by different nonuniform electric fields, which can be modulated by changing the value of d.不同非均匀电场(通过改变d调控)驱动下激子中心位置nc随时间的演化
    Fig. 4. Time evolution of the exciton center nc along the polymer chain driven by different nonuniform electric fields, which can be modulated by changing the value of d. 不同非均匀电场(通过改变d调控)驱动下激子中心位置nc随时间的演化
    Schematic diagram of two coupled polymer chains with a linear interchain packing configuration, where dn indicates the distance between the vertical-neighbor sites.线性排列构型的耦合双分子链, dn为分子链垂直最近邻格点间的距离
    Fig. 5. Schematic diagram of two coupled polymer chains with a linear interchain packing configuration, where dn indicates the distance between the vertical-neighbor sites. 线性排列构型的耦合双分子链, dn为分子链垂直最近邻格点间的距离
    Time evolution about the lattice configuration of an exciton in two coupled polymer chains driven by the nonuniform configuration field with a linear coefficient k = 0.03.激子在线性链间构型场 (k = 0.03)驱动下在分子间扩展及沿分子链输运的晶格动力学演化, 激子初始产生在第1条分子链上, 中心位置为nc = 30
    Fig. 6. Time evolution about the lattice configuration of an exciton in two coupled polymer chains driven by the nonuniform configuration field with a linear coefficient k = 0.03. 激子在线性链间构型场 (k = 0.03)驱动下在分子间扩展及沿分子链输运的晶格动力学演化, 激子初始产生在第1条分子链上, 中心位置为nc = 30
    Distribution of the driving force F along polymer chains driven by a linear configuration with k = 0.03. The inset presents the dependence of the exciton creation energy upon the interchain distance dn.线性构型场(k = 0.03)诱导的激子驱动力F沿分子链的分布, 插图为激子产生能随链间距离dn的变化
    Fig. 7. Distribution of the driving force F along polymer chains driven by a linear configuration with k = 0.03. The inset presents the dependence of the exciton creation energy upon the interchain distance dn. 线性构型场(k = 0.03)诱导的激子驱动力F沿分子链的分布, 插图为激子产生能 随链间距离dn的变化
    Time evolution of the exciton center nc along polymer chains driven by different configuration fields, which can be modulated by changing the value of k.不同线性分子排列构型场(通过改变k调控)下激子中心位置nc随时间的演化
    Fig. 8. Time evolution of the exciton center nc along polymer chains driven by different configuration fields, which can be modulated by changing the value of k. 不同线性分子排列构型场(通过改变k调控)下激子中心位置nc随时间的演化
    Wen-Jing Wang, Chong Li, Mao-Mao Zhang, Kun Gao. Dynamical study of ultrafast exciton migration in coujugated polymers driven by nonuniform field[J]. Acta Physica Sinica, 2019, 68(17): 177201-1
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