Using vitamin C to improve both performance and stability of n-type organic semiconductors

作     者：Sizhe Liu Xingxin Shao Jun Liu 

作者机构：Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences School of Applied Chemistry and Engineering University of Science and Technology of China 

出 版 物：《Science China Materials》 (中国科学:材料科学(英文版))

年 卷 期：2024年

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

摘      要：Organic semiconductors (OSCs) have the great advantages of flexibility, light weight, low-cost and large-area processing [1].After intensively studied for several decades, OSCs are now considered to be the most promising candidate materials for next-generation electronic circuits. N-type OSCs are the vital component for the basic electronic element, such as p-n junctions, light-emitting diodes and complementary circuits [2].However, the limited reliability of n-type OSCs inhibits their practical applications [3]. This is due to the generation of organic radical anions during device operation, which are thermodynamically unstable and easily react with oxygen and water [4]. The anti-oxidation properties of n-type OSCs can be expected if the lowest unoccupied molecular orbital (LUMO)energy levels are downshifted to lower than-4.8 eV [5,6].However, the molecular design and synthesis of n-type OSCs with ultralow LUMO energy levels are very challenging.