Carrier Dynamics in Pentacene |C60 Bilayer Solar Cell Investigated through the Magnetoconductance
Carrier Dynamics in Pentacene |C60 Bilayer Solar Cell Investigated through the Magnetoconductance
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并五苯中的载流子动力学 |通过磁导研究 C60 双层太阳能电池
DOI：
10.1021/jp508799j
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
and T. Ikoma
中科院分区：
文献类型：
--
作者：
T. Omori;Y. Wakikawa;T. Miura;Y. Yamaguchi;K. Nakayama;and T. Ikoma
我们证明了源自于在外磁场下抑制遭遇对中的自旋混合的磁导（MC）效应提供了关于并五苯（Pen）和富勒烯（C60）双层器件中的单线态裂变、电荷复合和与三重态激子相关的陷阱动力学的定量信息。在室温下，在双层器件中检测到低场、中场和高场的三种MC效应。低场MC效应的动力学分析表明，在PEN处的电荷复合产额|C60接口为0.1%。量子力学模拟的自旋携带对的动力学的自旋角动量守恒规则的重组表明，中等和高场MC效应所造成的，分别与三重态激子和单线态裂变的最大产率为52%的层中的陷阱相关的动力学。通过研究MC效应获得的定量信息将有助于开发高效的有机太阳能电池器件。
We demonstrate the magnetoconductance (MC) effect originated from depressing the spin mixing in encounter pairs under the external magnetic field provides quantitative information about the singlet fission, the charge recombination, and the trap-related dynamics with triplet exciton in a bilayer device of pentacene (Pen) and fullerene (C60). Three MC effects in low-, moderate-, and high-fields were detected in the bilayer device at room temperature. Kinetic analysis of the low-field MC effect showed that the charge recombination yield at the Pen|C60interface is ∼1%. Quantum mechanical simulations for dynamics of spin-carrying pairs following the conservation rule of spin angular momentum in recombination showed that the moderate- and high-field MC effects are caused by, respectively, the trap-related dynamics with triplet exciton and the singlet fission with a maximum yield of 52% in the layers. The quantitative information obtained by investigating the MC effect will contribute to the development of high-efficiency organic solar cells devices.