Suppressing Energetic Disorder of Organic Semiconductors for Semitransparent Photovoltaics and Thin‐Film Transistors
Abstract
Abstract The weak intermolecular interaction and short‐range aggregation endow organic semiconductors with the merits of flexibility, light weight, and solution processibility, while introducing more disorders at the same time. The greater degree of disorders in organic semiconductors, compared to inorganic semiconductors, is one of the major obstacles to their performance; thus, minimizing disorders is a key approach to boost the performance of organic electronics. Here, a strategy of using phthalate esters is introduced as assembly‐inducing agents (AIAs) to improve the packing ordering of organic semiconductors, thereby reducing the energetic disorders and improving the device performance. With dioctyl phthalate AIA, the organic semiconductor PM6 shows a 24% reduction in Urbach energy, 11% narrower absorption full width at half maximum, and suppressed absorption tails in thin film. In organic field‐effect transistors, this strategy offers a lift of hole mobility by 33.3%. In semitransparent organic photovoltaics, this strategy improves the average visible transmittance by 11.2% while maintaining the power conversion efficiency, yielding a high light utilization efficiency of 4.63% in optical structure‐free devices. This work provides a facile and effective approach to suppress the energetic disorder of organic semiconductors and opens up a new avenue for fabricating high‐performance organic electronics.
Article Details
Authors (21)
Yingyue Hu
College of Polymer Science and Engineering State Key Laboratory of Advanced Polymer Materials Sichuan University Chengdu 610065 China
Jiayu Wang
Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Suzhou Key Laboratory of Soft Material and New Energy, College of Chemistry, Chemical Engineering and Materials Science, Soochow University
Hongxiang Li
College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering
Si Chen
Hua Tang
Department of Genetics, Stanford University, Stanford, CA, USA.
Tianya Jin
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
Yang Liu
Zeng Chen
Dingqin Hu
Wensu Long
i‐Lab & Printable Electronics Research Center, Suzhou Institute of Nano‐Tech and Nano‐Bionics Chinese Academy of Sciences (CAS) Suzhou 215123 P. R. China
Hailin Yu
School of Chemistry and Chemical Engineering Gannan Normal University Ganzhou Jiangxi P. R. China
Cenqi Yan
College of Polymer Science and Engineering State Key Laboratory of Advanced Polymer Materials Sichuan University Chengdu China
Jiaqiang Qin
College of Polymer Science and Engineering State Key Laboratory of Advanced Polymer Materials Sichuan University Chengdu China
Qun Luo
Mingming Ding
Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters, College of Physical Science and Technology, Yili Normal University 1 , Yining 835000,
Haiming Zhu
Zhejiang Key Laboratory of Excited-State Energy Conversion and Energy Storage, Department of Chemistry, Institute of Fundamental and Transdisciplinary Research
Shirong Lu
Xiaowei Zhan
State Key Laboratory of Advanced Waterproof Materials, School of Materials Science and Engineering
Frederic Laquai
Huanping Zhou
Pei Cheng