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Wang CC, Lo AY, Cheng MC, Chang YS, Shih HC, Shieu FS, Tsai HT. Zinc oxide nanostructures enhanced photoluminescence by carbon-black nanoparticles in Moiré heterostructures. Sci Rep 2023; 13:9704. [PMID: 37322054 DOI: 10.1038/s41598-023-36847-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 06/11/2023] [Indexed: 06/17/2023] Open
Abstract
ZnO/carbon-black heterostructures were synthesized using a sol-gel method and crystallized by annealing at 500 °C under 2 × 10-2 Torr for 10 min. The crystal structures and binding vibration modes were determined by XRD, HRTEM, and Raman spectrometry. Their surface morphologies were observed by FESEM. The Moiré pattern that is observed in the HRTEM images confirms that the carbon-black nanoparticles were covered by the ZnO crystals. Measurements of optical absorptance revealed that the optical band gap of the ZnO/carbon-black heterostructures increased from 2.33 to 2.98 eV as the carbon-black nanoparticle content increases from 0 to 8.33 × 10-3 mol owing to the Burstein-Moss effect. The photoluminescence intensities at the near-band edge and of the violet, and blue light were increased by factors about 68.3, 62.8, and 56.8, respectively, when the carbon-black contents is of the 2.03 × 10-3 mol. This work reveals that the proper carbon-black nanoparticle content involved increases the PL intensities of the ZnO crystals in the short wavelength regime, supporting their potential application in the light-emitting devices.
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Affiliation(s)
- Chih-Chiang Wang
- Department of Chemical and Materials Engineering, National Chin-Yi University of Technology, Taichung, 411030, Taiwan.
| | - An-Ya Lo
- Department of Chemical and Materials Engineering, National Chin-Yi University of Technology, Taichung, 411030, Taiwan
| | - Ming-Che Cheng
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Yu-Sung Chang
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Han-Chang Shih
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung, 40227, Taiwan.
- Department of Chemical Engineering and Materials Science, Chinese Culture University, Taipei, 11114, Taiwan.
| | - Fuh-Sheng Shieu
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung, 40227, Taiwan
| | - He-Ting Tsai
- Instrument Center, The Office of Research and Development, National Chung Hsing University, Taichung, 40227, Taiwan
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Wang X, Wu B, Zhang J. Preparation, Photochromism, and Luminescence Principle of BMS: Dy
3+
, Eu
3+
Ceramics. CRYSTAL RESEARCH AND TECHNOLOGY 2022. [DOI: 10.1002/crat.202100173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xinmiao Wang
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries School of Environmental and Chemical Engineering Xi'an Polytechnic University Xi'an 710048 China
| | - Baijun Wu
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries School of Environmental and Chemical Engineering Xi'an Polytechnic University Xi'an 710048 China
| | - Jin Zhang
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries School of Environmental and Chemical Engineering Xi'an Polytechnic University Xi'an 710048 China
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Structure and Photoluminescence Properties of Thermally Synthesized V 2O 5 and Al-Doped V 2O 5 Nanostructures. MATERIALS 2021; 14:ma14020359. [PMID: 33450924 PMCID: PMC7828449 DOI: 10.3390/ma14020359] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/05/2021] [Accepted: 01/11/2021] [Indexed: 11/30/2022]
Abstract
Al-free and Al-doped V2O5 nanostructures were synthesized by a thermal-chemical vapor deposition (CVD) process on Si(100) at 850 °C under 1.2 × 10−1 Torr via a vapor-solid (V-S) mechanism. X-ray diffraction (XRD), Raman, and high-resolution transmission electron microscopy (HRTEM) confirmed a typical orthorhombic V2O5 with the growth direction along [110]-direction of both nanostructures. Metallic Al, rather than Al3+-ion, was detected by X-ray photoelectron spectroscopy (XPS), affected the V2O5 crystallinity. The photoluminescence intensity of V2O5 nanostructure at 1.77 and 1.94 eV decreased with the increasing Al-dopant by about 61.6% and 59.9%, attributing to the metallic Al intercalated between the V2O5-layers and/or filled in the oxygen vacancies, which behaved as electron sinks. Thus the Al-doped V2O5 nanostructure shows the potential applications in smart windows and the electrodic material in a Li-ion battery.
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