Molecular doped, color-tunable, high-mobility, emissive, organic semiconductors for light-emitting transistors

• Published in: Science advances Vol. 8; no. 27; p. eabp8775
• Main Authors: Qin, Zhengsheng, Gao, Can, Gao, Haikuo, Wang, Tianyu, Dong, Huanli, Hu, Wenping
• Format: Journal Article
• Language: English
• Published: American Association for the Advancement of Science 08.07.2022
• Subjects: Chemical Physics; Chemistry; Physical and Materials Sciences; SciAdv r-articles
• ISSN: 2375-2548; 2375-2548
• DOI: 10.1126/sciadv.abp8775

Developing high-mobility emissive organic semiconductors with tunable colors is crucial for organic light-emitting transistors (OLETs), a pivotal component of integrated optoelectronic devices, but remains a great challenge. Here, we demonstrate a series of color-tunable, high-mobility, emissive, organic semiconductors via molecular doping with a high-mobility organic semiconductor, 2,6-diphenylanthracene, as the host. The well-matched molecular structures and sizes with efficient energy transfer between the host and guest enable the intrinsically high charge transport with tunable colors. High mobility with the highest value >2 cm 2 V −1 s −1 and strong emission with photoluminescence quantum yield >15.8% are obtained for these molecular-doped organic semiconductors. Last, a large color gamut for constructed OLETs is up to 59% National Television System Committee standard, meanwhile with an extremely high current density approaching 326.4 kA cm −2 , showing great potential for full-color smart display, organic electrically pumped lasers and other related logic circuitries. Color-tunable, high-mobility, emissive, organic single crystals and their light-emitting transistors are demonstrated.