期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 8, 期 19, 页码 6521-6527出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0tc00741b
关键词
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资金
- National Natural Science Foundation of China [21574120, 21774115, 51573036]
- Fundamental Research Funds for the Central Universities [WK2060200025, JZ2018HGPB0276]
- Science and Technological Fund of Anhui Province for Outstanding Youth [1608085J01, 1808085J03]
Circularly polarized luminescence is rising to be the cynosure of a range of display and photonic technologies, including backlights, optical spintronics, and quantum information processing. Conventional strategies to directly generate circularly polarized electroluminescence from the emissive layer (EML) of organic light-emitting diodes (OLEDs), including the attachment of chiral pendants and use of chiral additives, have been well developed. Herein, we demonstrate that OLEDs based on achiral poly(9,9-di-n-hexylfluorene-alt-benzothiadiazole) (F6BT) could be induced to directly give a preferential emission of left- or right-handed circularly polarized electroluminescence just by simple treatment with circularly polarized light. The screw sense in F6BT could be easily controlled, and exhibited a strong dependence not only on the handedness but also on the wavelength of the driving circularly polarized light. This study sheds light on a unique design to realize circularly polarized electroluminescence from achiral compounds and pave the way for the fabrication of large-area and high-quality chiral optoelectronic devices.
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