Affiliation:
1. CAS Key Laboratory of Bioinspired Smart Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
2. School of Future Technology University of Chinese Academy of Sciences (UCAS) Beijing 100049 P.R. China
3. School of Chemistry Beihang University Beijing 100190 P.R. China
4. Binzhou Institute of Technology Weiqiao-UCAS Science and Technology Park Binzhou 256606 Shandong P.R. China
5. Ji Hua Laboratory Foshan 528000 Guangdong P.R. China
Abstract
AbstractThe patterning strategy of organic semiconductors is a crucial issue for integrated circuit. However, due to the uncontrollable liquid dewetting, most of the research is mainly focused on the patterning of single component, few works have been done on the patterning of multi‐component or heterojunction, which play an important role in optoelectronic devices. Therefore, a capillary‐bridge strategy was introduced for patterning of bulk heterojunction (BHJ) micro‐arrays, with liquid crystalline BTR and PC71BM utilized as donor and acceptor, respectively. The BTR:PC71BM arrays presented hierarchical morphology with suitable phase separation, which contributes to the efficient charge generation and transport. Moreover, the photodetector exhibited excellent performance with the light on/off ratio greater than 2000, the responsivity of 40.57 A W−1, and specific detectivity of 2.15×1012 Jones. Such progress demonstrates that the capillary‐bridge strategy is a promising approach for the fabrication of high‐quality BHJ micropatterns arrays.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Beijing Municipality
Subject
General Chemistry,Catalysis,Organic Chemistry