掺杂剂
兴奋剂
极性效应
共轭体系
路易斯酸
分子
化学
有机电子学
有机半导体
材料科学
组合化学
纳米技术
光化学
计算化学
有机化学
聚合物
光电子学
晶体管
催化作用
电压
物理
量子力学
作者
Eui Hyun Suh,Sang Beom Kim,Jaemin Jung,Jaeyoung Jang
标识
DOI:10.1002/ange.202304245
摘要
P-type chemical doping (p-doping) is a key technique to modulate the optical, electrical, and electronic properties of organic semiconductors. However, typical functional groups in organic p-dopants have insufficient electron-withdrawing strength, and the inevitable diffusion of dopants in host matrices degrades doping stabilities. Herein, we utilize extremely electron-withdrawing Lewis-paired CN groups as a new class of building blocks for designing unprecedentedly strong organic p-dopants with excellent doping stability. Various Lewis acids are paired with CN-functionalized conjugated molecules in the solution state, which strengthens the electron-withdrawing properties of CN groups almost twofold. The large dopants afford outstanding doping stability against continuous heating and long-term atmospheric exposure, which is promising for practical applications in devices. Given the broad applicability of this simple combinatorial approach, it may impact many fields of (opto)electronics.
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