Synthesis and photoluminescence of Y and Cd co-doped ZnO nanopowder

Song, Junfeng; Zheng, Jiahong; Zhao, Zhen; Zhou, Baiyu; Lian, Jianshe

doi:10.1016/s1003-6326(13)62738-7

Cited by 15 publications

(7 citation statements)

References 23 publications

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“…This confirms that the incorporated Y dopants into the ZnO [31]. In comparison with the standard binding energy of Y 3d 3/2 (157.4 eV) and Y 3d 5/2 (156.6 eV), shifts in the binding energies at lower energy side is apparent, which implies that the Y-O bond length in ZnO has changed owing to the incorporation of Y at the ZnO sites in the lattice [32]. The average bond length between Zn and O is increased owing to the doping of larger ionic radius of Y into the smaller Zn sites.…”

Section: Resultssupporting

confidence: 60%

A solution-processed yttrium-doped ZnO thin film transistors with sol-gel derived yttrium oxide gate dielectric layer

Kumar¹,

Jeong²

2018

Semicond. Sci. Technol.

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Yttrium-doped ZnO (YZO) thin film transistors (TFTs) are fabricated on sol-gel derived yttrium oxide (Y 2 O 3 ) dielectric layers by solution process. The sol-gel derived Y 2 O 3 layer annealed at 300 °C showed a leakage current density of less than 10 −6 A cm −2 at 10 V. Increasing the annealing temperature led to a decrease in the leakage current density by more than two orders of magnitude. The Y 2 O 3 dielectrics annealed at 300 °C exhibited crystalline phase, smooth surface and a high dielectric constant. The YZO TFTs built on a sol-gel derived Y 2 O 3 layer showed charge carrier mobility of 6.19 to 27.10 cm 2 V −1 s −1 upon annealing of YZO at 350 to 500 °C. The chemical composition was determined by x-ray photoelectron spectroscopy to confirm the doping of Y in the ZnO at all annealing temperatures. The results reveal the potential of Y 2 O 3 dielectric for developing low-temperature and high-performance electronic devices.

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Section: Resultssupporting

confidence: 60%

A solution-processed yttrium-doped ZnO thin film transistors with sol-gel derived yttrium oxide gate dielectric layer

Kumar¹,

Jeong²

2018

Semicond. Sci. Technol.

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“…It is seen that all the spectra have a distinct peak of the intrinsic emission originated from the excitonic recombination in the UV region, corresponding to near-band-edge emission of zinc oxide, and/or a deep level emission peak in the visible region, corresponding to the intrinsic defect-related band. PL peaks in the UV region (346 ~ 353 nm) and in the blue region (470 nm or 475 nm) show blue-shift by comparing with the ZnO NPs (~376 nm and ~525 nm) 48 49 . The peak at the blue region (indicating the defect emission) for CoZn@Zn (1-x) Co x O y nanohybrids synthesized by aqueous-phased metal salt reaction systems disappears.…”

Section: Discussionmentioning

confidence: 99%

A General Strategy for Nanohybrids Synthesis via Coupled Competitive Reactions Controlled in a Hybrid Process

Wang

Yang

Song

et al. 2015

Sci Rep

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A new methodology based on core alloying and shell gradient-doping are developed for the synthesis of nanohybrids, realized by coupled competitive reactions, or sequenced reducing-nucleation and co-precipitation reaction of mixed metal salts in a microfluidic and batch-cooling process. The latent time of nucleation and the growth of nanohybrids can be well controlled due to the formation of controllable intermediates in the coupled competitive reactions. Thus, spatiotemporal-resolved synthesis can be realized by the hybrid process, which enables us to investigate nanohybrid formation at each stage through their solution color changes and TEM images. By adjusting the bi-channel solvents and kinetic parameters of each stage, the primary components of alloyed cores and the second components of transition metal doping ZnO or Al2O3 as surface coatings can be successively formed. The core alloying and shell gradient-doping strategy can efficiently eliminate the crystal lattice mismatch in different components. Consequently, varieties of gradient core-shell nanohybrids can be synthesized using CoM, FeM, AuM, AgM (M = Zn or Al) alloys as cores and transition metal gradient-doping ZnO or Al2O3 as shells, endowing these nanohybrids with unique magnetic and optical properties (e.g., high temperature ferromagnetic property and enhanced blue emission).

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“…The amplification of the UV emission indicates that the crystalline defects in the ZnO film have changed after Bi doping. Ji-ling Song, et al, who found similar results in Y-doped ZnO, suggests that doping with trivalent atoms into ZnO lattice provides more electrons [46]. This excess depresses the formation of intrinsic defects (VZn and Zni defects), in i.e.…”

Section: Photoluminescencementioning

confidence: 50%

Highly oriented and conducting Bi doped ZnO (BZO) layers chemically sprayed using nitrogen gas carrier

Chouikh

Beggah

Tabet

et al. 2017

Materials Science in Semiconductor Processing

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Synthesis and photoluminescence of Y and Cd co-doped ZnO nanopowder

Cited by 15 publications

References 23 publications

A solution-processed yttrium-doped ZnO thin film transistors with sol-gel derived yttrium oxide gate dielectric layer

A solution-processed yttrium-doped ZnO thin film transistors with sol-gel derived yttrium oxide gate dielectric layer

A General Strategy for Nanohybrids Synthesis via Coupled Competitive Reactions Controlled in a Hybrid Process

Highly oriented and conducting Bi doped ZnO (BZO) layers chemically sprayed using nitrogen gas carrier

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