Effects of Yb doping on the structure and near band-edge emission of ZnO thin films on Si after high temperature annealing

Heng, C. L.; Zhao, C.N.; Zhang, L; Wu, Xiang; Su, Wenyong; Yin, H. X.; Gao, Yiyang; Yin, Penggang; Finstad, T. G.

doi:10.1016/j.jlumin.2020.117153

Cited by 13 publications

(5 citation statements)

References 43 publications

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“…Cerrato et al (Cerrato et al 2020) investigated the role of the Yb dopant in the photoactivity of ZnO, nding that with a small amount of Yb, the photoactivity of ZnO was enhanced. Heng et al (Heng et al 2020) found that for concentrations down to 0.1 at%. of Yb, the near bandedge emission PL of pure ZnO was increased.…”

Section: Introductionmentioning

confidence: 97%

Effect of Yb Concentration on the Structural, Magnetic and Optoelectronic Properties of Yb Doped ZnO: First Principles Calculation

Achehboune

Khenfouch

Boukhoubza

et al. 2021

Preprint

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Density functional theory-based investigation of the electronic, magnetic, and optical characteristics in pure and ytterbium (Yb) doped ZnO has been carried out by the plane-wave pseudopotential technique with generalized gradient approximation. The calculated lattice parameters and band gap of pure ZnO are in good agreement with the experimental results. The energy band-gap increases with the increase of Yb concentration. The Fermi level moves upward into the conduction band after doping with Yb, which shows the properties of an n-type se miconductor. New defects were created in the band-gap near the conduction band attributed to the Yb-4f states. The magnetic properties of ZnO were found to be affected by Yb doping; ferromagnetic property was observed for 4.17% Yb due to spin polarization of Yb-4f electrons. The calculated optical properties imply that Yb doped causes a blue shift of the absorption peaks, significantly enhances the absorption of the visible light, and the blue shift of the reflectivity spectrum was observed. Besides, a better transmittance of approximately 88% was observed for 4.17% Yb doped ZnO system. The refractive index and the extinction coefficient were observed to decrease as the Yb dopant concentration increased. As a result, we believe that our findings will be useful in understanding the doping impact in ZnO and will motivate further theoretical research.

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Section: Introductionmentioning

confidence: 97%

Effect of Yb Concentration on the Structural, Magnetic and Optoelectronic Properties of Yb Doped ZnO: First Principles Calculation

Achehboune

Khenfouch

Boukhoubza

et al. 2021

Preprint

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“…Hence, the doping effect of rare-earth ions in ZnO materials has been extensively investigated. Heng et al 23 found that the ultraviolet (UV) photoluminescence (PL) intensity of 1.35 atom % ytterbium (Yb)-doped ZnO was almost three times as high as that of ZnO. Dysprosium (Dy) doping can introcuce two emission bands situated at around 481 and 577 nm, 24 and Jayachandraiah et al 20 reported the greatly enhanced green emission (about 400%) of ZnO with 3.33 atom % Dy doping concentration.…”

Section: Introductionmentioning

confidence: 99%

Sol–Gel-Derived Biodegradable Er-Doped ZnO/Polyethylene Glycol Nanoparticles for Cell Imaging

Chen

Xue

Luo

et al. 2022

ACS Appl. Nano Mater.

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Zinc oxide nanoparticles (ZnO NPs) as promising and nontoxic fluorescent labels are currently developed for cell imaging owing to their excellent biocompatibility. However, the low intensity of the emission band and stability of ZnO NPs have restricted their further applications. In this work, 5 mol % rare-earth metal erbium (Er)-doped ZnO nanoparticles with poly(ethylene glycol) (PEG) surface modification (Er-doped ZnO/PEG NPs) are fabricated by the sol–gel method. Their fluorescence characteristics and biodegradation behavior are investigated. The results indicate that the visible photoluminescence of Er-doped ZnO/PEG NPs has been dramatically enhanced by 631.6% compared with that of bare ZnO NPs. After being stored for one month, particle size variation is less than 1 nm, and fluorescence performance can be well retained. Furthermore, the degradation and cytotoxicity results confirm the degradable and biocompatible characteristics of Er-doped ZnO/PEG NPs, thus extending their potential applications for cell imaging.

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“…Various ZnO materials doped with ytterbium ions were previously developed and studied, i.e., quantum dots [21], nanomaterials [22][23][24][25][26][27][28][29][30][31], films [33][34][35][36][37][38][39][40][41][42][43], microspheres [44] and ion implanted single crystals [45,46].…”

Section: Introductionmentioning

confidence: 99%

“…The authors of all these studies mentioned that an addition of ytterbium ions modifies the structure, texture and properties of ZnO materials. In a series of publications [24,25,[32][33][34]39,41,[43][44][45], the authors did not register any crystalline phase other than ZnO by the X-ray diffraction (XRD) analysis, which led them to conclusion that Yb 3+ ions enter into the ZnO lattice. Any amount of Yb in other phases was claimed to be below the detection limit of the XRD analysis [41].…”

Section: Introductionmentioning

confidence: 99%

“…In a series of publications [24,25,[32][33][34]39,41,[43][44][45], the authors did not register any crystalline phase other than ZnO by the X-ray diffraction (XRD) analysis, which led them to conclusion that Yb 3+ ions enter into the ZnO lattice. Any amount of Yb in other phases was claimed to be below the detection limit of the XRD analysis [41]. In [33], Balestrieri et al pointed out that in Yb-doped films, the lattice parameter c of ZnO increases continuously with doping up to 2%, suggesting that the amount of Yb substituting Zn 2+ ions increases continuously, and the solubility limit of Yb in ZnO is not reached.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

ZnO – Yb2O3 composite optical ceramics: Synthesis, structure and spectral-luminescent properties

Gorokhova

Дымшиц

Venevtsev

et al. 2022

Journal of the European Ceramic Society

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Effects of Yb doping on the structure and near band-edge emission of ZnO thin films on Si after high temperature annealing

Cited by 13 publications

References 43 publications

Effect of Yb Concentration on the Structural, Magnetic and Optoelectronic Properties of Yb Doped ZnO: First Principles Calculation

Effect of Yb Concentration on the Structural, Magnetic and Optoelectronic Properties of Yb Doped ZnO: First Principles Calculation

Sol–Gel-Derived Biodegradable Er-Doped ZnO/Polyethylene Glycol Nanoparticles for Cell Imaging

ZnO – Yb2O3 composite optical ceramics: Synthesis, structure and spectral-luminescent properties

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