Affiliation:
1. Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of Chemistry Institute of Molecular Aggregation Science Tianjin University 300072 Tianjin China
2. Analysis and testing center of Tianjin University 300192 Tianjin China
3. Fachgebiet Angewandte Nanophysik Institut für Physik & IMN MacroNano Technische Universitat Ilmenau 98693 Ilmenau Germany
4. Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University 350207 Fuzhou China
5. Haihe Laboratory of Sustainable Chemical Transformations 300192 Tianjin China
Abstract
AbstractOrganic semiconductor single crystals (OSSCs) are ideal materials for studying the intrinsic properties of organic semiconductors (OSCs) and constructing high‐performance organic field‐effect transistors (OFETs). However, there is no general method to rapidly prepare thickness‐controllable and uniform single crystals for various OSCs. Here, inspired by the recrystallization (a spontaneous morphological instability phenomenon) of polycrystalline films, a spatial confinement recrystallization (SCR) method is developed to rapidly (even at several second timescales) grow thickness‐controllable and uniform OSSCs in a well‐controlled way by applying longitudinal pressure to tailor the growth direction of grains in OSCs polycrystalline films. The relationship between growth parameters including the growth time, temperature, longitudinal pressure, and thickness is comprehensively investigated. Remarkably, this method is applicable for various OSCs including insoluble and soluble small molecules and polymers, and can realize the high‐quality crystal array growth. The corresponding 50 dinaphtho[2,3‐b:2″,3″‐f]thieno[3,2‐b]thiophene (DNTT) single crystals coplanar OFETs prepared by the same batch have the mobility of 4.1 ± 0.4 cm2 V−1 s−1, showing excellent uniformity. The overall performance of the method is superior to the reported methods in term of growth rate, generality, thickness controllability, and uniformity, indicating its broad application prospects in organic electronic and optoelectronic devices.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Natural Science Foundation of Tianjin City
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献