期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 29, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202201674
关键词
Circularly Polarized Luminescence; Inorganic Chiral Photonic Crystals; Langmuir-Schaefer Assembly; Quantum Dots
资金
- National Key R&D Program of China [2021YFA1200302]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDB36000000]
- National Natural Science Foundation of China [11774036, 12174032]
- National Key Research and Development Program of China [2017YFA0303400]
- NSFC-RGC [11861161002]
This paper describes a new approach to obtain intense and tunable circularly polarized luminescence (CPL) by doping semiconductor quantum dots into inorganic chiral photonic crystals (CPCs). The sign, position, and intensity of CPL peaks can be precisely controlled by manipulating the photonic band gap of CPCs or the luminescence wavelength of quantum dots.
Chiral semiconductor nanostructures have received enormous attention due to their emerging circularly polarized luminescence (CPL) properties. However, compared with well-studied photoluminescence (PL), the reported CPL is much weaker and more challenging to be modulated. Herein, we describe a new approach for acquiring the intense and tunable CPL from inorganic chiral photonic crystals (CPCs) doped with semiconductor quantum dots (QDs). Unprecedentedly, the sign, position and intensity of CPL peaks can be precisely controlled by manipulating either the photonic band gap of CPCs or luminescence wavelength of QDs and a giant absolute dissymmetry factor |g(lum)| up to 0.25 is obtained. More importantly, the origin of the CPL modulation is clearly elucidated by both experiment and theory. This work lays the foundation for the construction of next-generation high-performance CPL-based devices.
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