Abstract
A composite of WO3 and WS2 has a wider wavelength range of light adsorption and light emission than WS2. A noble metal nanostructure can be utilized to adjust the photoluminescence (PL) of luminescent materials. In this study, WO3-WS2 flakes were synthesized. A straightforward bath method has been employed to synthesize Ag nanoparticles (NPs). The average size of Ag NPs is approximately 60 nm. The Fourier transform infrared (FT-IR) peak of WO3-WS2 flake at 495 cm−1 is from an alkane S–S bond stretching vibration. The PL intensity of WO3-WS2 was attenuated subsequent to its integration with Ag NPs. The PL quantum yield of the WO3-WS2/Ag composite can reach 0.11%. This occurrence can be explained by the pronounced resonance absorption and diminished light extraction induced by the Ag NPs. This decreased light emission of the Ag NPs incorporated with WO3-WS2 may be employed in some situations needing extinction, such as photography and projection.
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Acknowledgments
This study was supported by the National Natural Science Foundation of China (12264014). The work was also supported by Scientific Research Project of Education Department of Jiangxi Province (GJJ210660).
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Wang, C., Zhou, Y. & Liu, Z. Influence of Ag Nanoparticles on the Photoluminescence of WO3-WS2 Flake. J. Electron. Mater. 53, 899–906 (2024). https://doi.org/10.1007/s11664-023-10830-y
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DOI: https://doi.org/10.1007/s11664-023-10830-y