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Ag Localized Surface Plasma-Modulated NBE Emissions from ZnCdO Thin Films

  • Topical Collection: 19th International Conference on II-VI Compounds
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Abstract

Recently, metal surface plasma technology has been widely used to improve the quantum efficiency of optoelectronic devices, such as ZnO light-emitting diodes (LEDs). In this work, Ag films with the appropriate thickness were prepared by evaporation and annealed, and a layer of ZnCdO films with different Cd concentrations was grown on the Ag films by the pulsed laser deposition method. During this process, the changes in the Cd concentrations caused the near-band edge (NBE) emission of the ZnCdO films to be continuously adjusted in the ultraviolet to green wavelength range by controlling the oxygen pressure. The prepared Ag nanoparticles and ZnCdO composite films were used to study the metal localized surface plasmon (LSP) effect. The results show that the enhanced or reduced photoluminescence intensity of ZnCdO NBE depends on the probability of electrons transport to either the LSP level or the Fermi level of the metal. This discovery provides an important theoretical basis for the preparation of ZnCdO semiconductor LEDs in the future.

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Acknowledgments

This work was funded by the National Natural Science Foundations of China (Grant Nos. 51872187, 60976036, 21805194, 11774241, 61704111), the Natural Science Foundation of Guangdong Province (Grant Nos. 2016A030313060, 2017A030310524), the Fundamental Research Project of Shenzhen (Grant Nos. JCYJ20180305124701756, JCYJ2018030507182248925, JCYJ20180508163404043), the Science and Technology Foundation of Shenzhen (Grant Nos. JCYJ2016-2019).

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Authors and Affiliations

  1. College of Materials Science and Engineering, Shenzhen Key Laboratory of Special Functional Materials, Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen University, Shenzhen, 518060, China

    Shaobing Wu, Xi Cheng, Youming Lu, Shun Han, Peijiang Cao, Yuxiang Zeng, Wangying Xu, Ming Fang, Wenjun Liu & Deliang Zhu

  2. College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518060, China

    Shaobing Wu & Youming Lu

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  1. Shaobing Wu
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  2. Xi Cheng
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Correspondence to Youming Lu.

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Wu, S., Cheng, X., Lu, Y. et al. Ag Localized Surface Plasma-Modulated NBE Emissions from ZnCdO Thin Films. J. Electron. Mater. 49, 4479–4484 (2020). https://doi.org/10.1007/s11664-020-08057-2

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  • DOI: https://doi.org/10.1007/s11664-020-08057-2

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