Breaking the mobility–stability dichotomy in organic semiconductors through adaptive surface doping
Abstract
Organic semiconductors (OSCs) are pivotal for next-generation flexible electronics but are limited by an intrinsic trade-off between mobility and stability. We introduce adaptive surface doping (ASD), an innovative strategy to overcome this dichotomy in OSCs. ASD's adaptive mechanism accommodates a broad range of dopant concentrations, optimally passivating trap states as needed. This approach significantly lowers the trap energy level from 84 meV to 14 meV above the valence band edge, promoting a transition from hopping to band-like transport mechanisms. ASD boosts carrier mobility by over 60%, reaching up to 30.7 cm 2 V −1 s −1 , while extending the extrapolated operational lifetime of treated devices beyond 57.5 y. This breakthrough sets a standard in organic electronics, positioning ASD as a powerful method for simultaneously enhancing performance and stability in OSC devices.
Article Details
Journal Info
Proceedings of the National Academy of Sciences
National Academy of Sciences
Authors (15)
Zhaofeng Wang
Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University
Xianshuo Wu
Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University
Siyuan Zhang
Shuyuan Yang
Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University
Pichao Gao
Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University
Panhui Huang
Zurich Instruments Aktiengesellschaft
Yanling Xiao
Xianfeng Shen
Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University
Ximeng Yao
Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University
Dong Zeng
Department of Pathology, Shanghai Public Health Clinical Center, Fudan University
Jiansheng Jie
Institute of Functional Nano & Soft Materials, Soochow University
Yecheng Zhou
The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yat-Sen University
Fangxu Yang
Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University
Rongjin Li
Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University
Wenping Hu