Organic semiconductor composites: influence of additives on the transient photocurrent
Organic semiconductor composites: influence of additives on the transient photocurrent
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有机半导体复合材料：添加剂对瞬态光电流的影响
DOI：
10.1063/1.3062850
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发表时间：
2009
影响因子：
4
通讯作者：
J. Anthony
中科院分区：
文献类型：
--
作者：
J. Day;A. Platt;O. Ostroverkhova;S. Subramanian;J. Anthony
我们报道了添加到功能化蒽硫吩（ADT）主体上的各种客体分子对溶液沉积薄膜中光激发载流子动力学的影响，在100 fs激光脉冲光激发后，从~ 100 ps到bbb100 μs。在氟化ADT衍生物ADT- tes - f中加入2 wt %和5 wt %的C60，可分别使瞬态光电流幅度增强约3和10倍。相比之下，在ADT- tes - f中添加10 wt %的另一种ADT衍生物ADT-TIPS- cn或功能化的并五烯衍生物（TIPS pentacene），会导致幅度下降约3-4倍，并且光电流动力学显著不同。
We report on the effect of various guest molecules added to a functionalized anthradithiophene (ADT) host on photoexcited charge carrier dynamics in solution-deposited thin films, from ∼100 ps to >100 μs after photoexcitation with 100 fs laser pulses. An addition of 2 and 5 wt % of C60 to a fluorinated ADT derivative, ADT-TES-F, resulted in transient photocurrent amplitude enhancement by a factor of ∼3 and 10, respectively. In contrast, an addition of 10 wt % of another ADT derivative, ADT-TIPS-CN, or a functionalized pentacene derivative (TIPS pentacene) to ADT-TES-F led to a decrease in the amplitude by a factor of ∼3–4 and dramatically different photocurrent dynamics.