Photoinduced Dedoping of Conducting Polymers: An Approach to Precise Control of the Carrier Concentration and Understanding Transport Properties
Photoinduced Dedoping of Conducting Polymers: An Approach to Precise Control of the Carrier Concentration and Understanding Transport Properties
复制标题
导电聚合物的光致去掺杂：精确控制载流子浓度和了解传输特性的方法
DOI：
10.1021/acsami.5b10453
复制
发表时间：
2016
影响因子：
9.5
通讯作者：
Yasuhisa Naitoh and Takao Ishida
中科院分区：
文献类型：
--
作者：
Qingshuo Wei;Masakazu Mukaida;Kazuhiro Kirihara;Yasuhisa Naitoh and Takao Ishida
探索共轭聚合物的各种应用需要系统地研究它们的物理性质作为掺杂密度的函数，因此，需要精确控制它们的掺杂密度。在这项研究中，我们报告了一种新的固态光诱导电荷转移反应，dedopes高导电性的聚（3，4-乙撑二氧噻吩）/聚（苯乙烯磺酸盐）的配合物，如。改变这种材料的紫外线照射时间可以使膜内的载流子密度精确控制在3个数量级以上。我们提取的载流子密度，载流子迁移率，和塞贝克系数在不同的掺杂水平，以获得清晰的图像的载流子传输机制。这种方法不仅可以更好地理解导电聚合物的物理特性，而且对于开发需要图案化的大面积导电聚合物的应用也很有用。
Exploring the various applications of conjugated polymers requires systematic studies of their physical properties as a function of the doping density, which, consequently, calls for precise control of their doping density. In this study, we report a novel solid-state photoinduced charge-transfer reaction that dedopes highly conductive polyelectrolyte complexes such as poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate). Varying the UV-irradiation time of this material allows the carrier density inside the film to be precisely controlled over more than 3 orders of magnitude. We extract the carrier density, carrier mobility, and Seebeck coefficient at different doping levels to obtain a clear image of carrier-transport mechanisms. This approach not only leads to a better understanding of the physical properties of the conducting polymer but also is useful for developing applications requiring patterned, large-area conducting polymers.