Source abstract
Abstract
Abstract CdSe nanowire (NW)–Au nanoparticle (NP) compounds are synthesized successfully using the method of physical vapor deposition, and the modulated remote emission is realized in the hybrid structure with strong metal–semiconductor coupling. The well‐crystallized, uniform morphology, smooth surface CdSe NW is attached with an Au NP on the terminal, which forms the integration structure with direct plasmon–exciton coupling of semiconductor–metal hybrid system. When the CdSe terminal or Au NP terminal of the hybrid structure is excited by the laser with wavelength of 633 nm, the remote light emission at another terminal is greatly modulated. To reveal the physical mechanism of energy conviction between plasmon and exciton, finite‐difference time‐domain simulations are performed for the CdSe NW–Au NP hybrid structures. The calculated results confirm that the modulation of remote light emission is attributed to the competing of the quench of photoluminescence and the electric field enhancement of local surface plasmon resonance. These works can provide deeper understanding of physical mechanism of plasmon and exciton coupling, and open up new application for the remote light sensing and detection.
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Research context
OpenAlex topics: Quantum Dots Synthesis And Properties · Nanowire Synthesis and Applications · Chalcogenide Semiconductor Thin Films
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Affiliations
Key Laboratory for Special Functional Materials of Ministry of Education Henan University Kaifeng 475004 China
Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technology Institution Physical and Chemistry Chinese Academic Science Beijing 100190 China
University of Chinese Academy of Sciences Beijing 100049 China
School of Mathematics and Physics Beijing Key Laboratory for Magneto‐Photoelectrical Composite and Interface Science Center for Green Innovation University of Science and Technology Beijing Beijing 100083 China
Funding
National Natural Science Foundation of China
References (38)
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