MOCVD growth of monomethylhydrazine-doped ZnO layers

Saito, Kyoji; Hosokai, Yasushi; Nagayama, Kouhei; Ishida, Kenji; Takahashi, Kiyoshi; Konagai, Makoto; Zhang, Baoping

doi:10.1016/j.jcrysgro.2004.09.003

Cited by 12 publications

(11 citation statements)

References 12 publications

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“…IR mode at 653 cm À1 in case of the nitrogendoped film subsided due to annealing, a similar trend was obtained in the nitrogen-related RS mode at 653 cm À1 (Fig. 3) [1,9]. IR frequency at 830 and 1024 cm À1 originated from the N-O bond.…”

Section: Resultssupporting

confidence: 73%

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P-type nitrogen-doped ZnO thin films on sapphire substrates by remote-plasma-enhanced metalorganic chemical vapor deposition

Gangil

Nakamura

Ichikawa

et al. 2007

Journal of Crystal Growth

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Section: Resultssupporting

confidence: 73%

“…The dominant ZnO-related LVM was found centered around 386 cm À1 for undoped and nitrogen-doped films grown on a-plane sapphire. The most dominant LVM peak, reported for ZnO at 438 cm À1 (E 2 -High) by different researchers [1,9,10], was found to be merged with most dominant sapphire substrate peak, centered at 424 cm À1 (phonon A1 g mode).…”

Section: Resultsmentioning

confidence: 85%

P-type nitrogen-doped ZnO thin films on sapphire substrates by remote-plasma-enhanced metalorganic chemical vapor deposition

Gangil

Nakamura

Ichikawa

et al. 2007

Journal of Crystal Growth

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“…The peak at 331.5 and 379.8 cm −1 corresponds to the second order (E 2 (high) -E 2 (low)) and A 1 (TO), respectively [22]. The other peaks at A 1 (276.1 cm −1 ), A 3 (509.6 cm −1 ) and A 1 (LO) (580 cm −1 ) are due to local vibration modes of nitrogen in ZnO [23]. Peak at 276.1 cm −1 is attributed to the localized vibration of Zn atoms, where parts of their first nearest neighbor O atoms are replaced by N atoms in the ZnO lattice [24].…”

Section: Resultsmentioning

confidence: 96%

Synthesis, characterization and visible light photocatalytic activity of nitrogen-doped zinc oxide nanospheres

Lavand

Malghe

2015

Journal of Asian Ceramic Societies

166

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a b s t r a c tPure and Nitrogen (N)-doped ZnO nanospheres were successfully prepared using microemulsion method. X-ray diffraction (XRD) study indicates formation of nanosized N-doped ZnO with wurtzite phase. Nitrogen incorporation into oxygen site of ZnO causes lattice compression and small peak shift toward lower 2Â value. Raman and Fourier transform infrared (FTIR) measurements revealed the presence of N in ZnO lattice. Scanning electron microscopy (FESEM) study revealed spherical morphology of pure and N-doped ZnO samples. UV-visible spectra show that N-doping significantly enhanced the light absorption capacity of ZnO in the visible region. N-doped ZnO exhibits higher photocatalytic activity compared with that of commercial and pure ZnO nanoparticles. As prepared nanosized N-doped ZnO photocatalyst is highly stable and reusable.

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“…Further observation demonstrates that the absorbance in the visible light region increases due to the co-operative effect of nitrogen doping and graphene. 33 Raman mode at 275 cm À1 was attributed to the localized vibration of Zn atoms, where parts of their rst nearest neighbour O atoms are replaced by N atoms in the ZnO lattice. 31 It is obvious that N-ZnO/GR shows much higher visible light absorption than the ZnO/GR composite.…”

Section: Resultsmentioning

confidence: 99%

In situ preparation of N–ZnO/graphene nanocomposites: excellent candidate as a photocatalyst for enhanced solar hydrogen generation and high performance supercapacitor electrode

et al. 2015

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We have demonstrated a facile in situ wet chemical method to synthesize nanostructured nitrogen doped ZnO/Graphene (N-ZnO/GR) nanocomposites for the first time. Nitrogen doped ZnO over graphene (N-ZnO/GR) was studied using various concentrations of graphene. During the synthesis of N-ZnO/GR nanocomposites, in situ formation of graphene via GO reduction and formation of 4-9 nm N-ZnO have been demonstrated. The composite N-ZnO/GR absorbs in the visible region and this property is used for the photocatalytic reaction to transform hazardous H 2 S waste into eco-friendly hydrogen using solar light. The N-ZnO/GR nanocomposite with 0.3% graphene exhibits an enhanced photocatalytic stable hydrogen production rate i.e. $5072 mmol h À1 under visible light irradiation. It is noteworthy that the N-ZnO/GR electrode exhibits a high specific capacitance of 555 F g À1 and excellent cyclic performance with nearly 96.20% capacity retention after 2000 cycles at a current density of 10 A g À1 . These results indicate great potential applications of N-ZnO/GR in developing high hydrogen production and supercapacitors with high energy and power densities. † Electronic supplementary information (ESI) available: Raman spectrum of GO, XPS of GO, FTIR of samples GO, Z1, Z3, Z4, Z5 and Z6, FESEM of GO, undoped ZnO and N-ZnO, TEM of Z3, hydrogen evolution of the recycled Z4 sample, XRD of sample (Z4) aer three cycles of the photocatalytic study, Raman spectrum of sample Z4 aer three cycles of the photocatalytic study, and XPS of sample (Z4) aer three cycles of the photocatalytic study. See

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MOCVD growth of monomethylhydrazine-doped ZnO layers

Cited by 12 publications

References 12 publications

P-type nitrogen-doped ZnO thin films on sapphire substrates by remote-plasma-enhanced metalorganic chemical vapor deposition

P-type nitrogen-doped ZnO thin films on sapphire substrates by remote-plasma-enhanced metalorganic chemical vapor deposition

Synthesis, characterization and visible light photocatalytic activity of nitrogen-doped zinc oxide nanospheres

In situ preparation of N–ZnO/graphene nanocomposites: excellent candidate as a photocatalyst for enhanced solar hydrogen generation and high performance supercapacitor electrode

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