Adduct-based p-doping of organic semiconductors
Adduct-based p-doping of organic semiconductors
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DOI：
10.1038/s41563-021-00980-x
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发表时间：
2021-04-22
期刊：
影响因子：
41.2
通讯作者：
Snaith, Henry J.
中科院分区：
文献类型：
--
作者：
Sakai, Nobuya;Warren, Ross;Snaith, Henry J.
二甲基亚砜和氢溴酸的加合物表现出对各种有机半导体的有效p型掺杂以及与用于改善有机基光电器件的稳定性和其他性能参数的其他抗衡离子的相容性。尽管基于分子和金属络合物的掺杂剂已经使得基于有机半导体的器件取得了重大进展，但是如果要向更大面积的有机电子器件进行广泛过渡，则仍然需要清洁、有效和低成本的掺杂剂。在这里，我们报告二甲基亚砜加合物作为p型掺杂剂，满足这些条件的范围内的有机半导体。这些基于加合物的掺杂剂与溶液和气相处理都相容。我们探索掺杂机制，并利用我们获得的知识，从选择的counterparts的掺杂剂“解耦”。我们证明了不对称p掺杂是可能的，使用溶液处理路线，并证明其在金属卤化物钙钛矿太阳能电池，有机薄膜晶体管和有机发光二极管，这展示了这种掺杂方法的多功能性。
Adducts of dimethyl sulfoxide and hydrobromic acid demonstrate efficient p-doping of various organic semiconductors and compatibility with other counterions used to improve stability and other performance parameters of organic-based optoelectronic devices.Electronic doping of organic semiconductors is essential for their usage in highly efficient optoelectronic devices. Although molecular and metal complex-based dopants have already enabled significant progress of devices based on organic semiconductors, there remains a need for clean, efficient and low-cost dopants if a widespread transition towards larger-area organic electronic devices is to occur. Here we report dimethyl sulfoxide adducts as p-dopants that fulfil these conditions for a range of organic semiconductors. These adduct-based dopants are compatible with both solution and vapour-phase processing. We explore the doping mechanism and use the knowledge we gain to 'decouple' the dopants from the choice of counterion. We demonstrate that asymmetric p-doping is possible using solution processing routes, and demonstrate its use in metal halide perovskite solar cells, organic thin-film transistors and organic light-emitting diodes, which showcases the versatility of this doping approach.