溶剂对溶液法制备聚合物光电探测器探测率的影响。
Effect of solvent on detectivity of solution-processed polymer photodetectors.
机构信息
School of Chemical Engineering and Material Science, Chung-Ang University, Seoul, South Korea.
出版信息
Opt Lett. 2013 Aug 1;38(15):2814-7. doi: 10.1364/OL.38.002814.
We demonstrate a high-performance solution-processed polymer photodetector (PPD) whose detectivity (D*) exceeds 10(11) Jones over almost the entire range of visible light. PPDs processed from a chlorobenzene solution using 1,8-diiodooctane (DIO) as an additive exhibit large crystalline domains with long-range order, in contrast to the featureless morphology of PPDs processed with pure solvent. Moreover, PPDs processed with DIO exhibit higher charge carrier mobility, and thus high photoconductive gain without compromising long carrier lifetime. Consequently, a high-loading ratio of DIO (3%) yielded a PPD whose D* in the visible range was over threefold higher than that of PPD without DIO.
我们展示了一种高性能的溶液处理聚合物光电探测器（PPD），其探测率（D*）在几乎整个可见光范围内超过 1011 琼斯。使用 1,8-二碘辛烷（DIO）作为添加剂，从氯苯溶液中处理的 PPD 表现出具有长程有序的大结晶畴，与使用纯溶剂处理的 PPD 的无特征形态形成对比。此外，使用 DIO 处理的 PPD 表现出更高的电荷载流子迁移率，从而实现了高光导增益，而不会影响长载流子寿命。因此，高负载比的 DIO（3%）产生了一种 PPD，其在可见范围内的 D* 比没有 DIO 的 PPD 高出三倍以上。
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