Effects of Cationic Species in Salts on the Electrical Conductivity of Doped PEDOT:PSS Films
Effects of Cationic Species in Salts on the Electrical Conductivity of Doped PEDOT:PSS Films
复制标题
盐中阳离子种类对掺杂 PEDOT:PSS 薄膜电导率的影响
DOI：
10.1021/acsapm.0c01084
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发表时间：
2021-01-08
影响因子：
5
通讯作者：
Zhang, Peng
中科院分区：
文献类型：
--
作者：
Li, Xin;Liu, Zhen;Zhang, Peng
研究了聚（3，4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）薄膜的电导率，其中四种硅溶胶具有不同的阳离子，但具有相同的双（三氟甲磺酰基）酰胺（TFSI）阴离子。通过掠入射广角X射线散射（GIWAXS）和紫外-可见光谱（UV-vis）分析，我们发现小尺寸阳离子的掺杂盐可以提高PEDOT的结晶有序度和p掺杂水平，从而提高其电导率。这种现象可以合理化的事实，即具有较强的库仑相互作用的小尺寸的阳离子可以导致高掺杂和重排的PEDOT：PSS。这些发现将有助于开发基于PEDOT：PSS/盐复合材料的配方，以应用于印刷柔性电子产品。
The electrical conductivity of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films with four silts that have various cations but the same bis(trifluoromethanesulfonyl)amide (TFSI) anion was studied. We found that doping salts of small-sized cations led to better conductivity because of the improved crystalline order and p-doped level of PEDOT, as revealed by the grazing-incidence wide-angle X-ray scattering (GIWAXS) and UV-vis spectrum. This phenomenon can be rationalized with the fact that small-sized cations with stronger Coulombic interactions can lead to high doping and rearrangement of PEDOT:PSS. These findings will help to develop recipes based on the PEDOT:PSS/salt composite toward the applications for printed flexible electronics.