Sb‐induced size effects in ZnO nanocrystallites

Zuo, Jian‐Min; Xu, Chao; Zhang, Lihua; Xu, Bin; Ruo, WU

doi:10.1002/jrs.761

Cited by 28 publications

(6 citation statements)

References 7 publications

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“…In RRS spectra, three anomalous modes at 526, 657 and 753 cm −1 are observed. The modes at 526 and 657 cm −1 can also be observed in nanostructured ZnO doped with N, Al, Ga, Sb, Fe and Ce under nonresonant conditions [32][33][34]. Another mode at 753 cm −1 may correspond to the 2A 1 (TO) mode of ZnO from the frequency point of view.…”

Section: Resonance Raman Scattering (Rrs)mentioning

confidence: 87%

Lattice variation and Raman spectroscopy in hierarchical heterostructures of zinc antimonate nanoislands on ZnO nanobelts

Cheng¹,

Jiao²,

Sun³

et al. 2009

Nanotechnology

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In ZnO hierarchical heterostructures of zinc antimonate nanoislands on ZnO nanobelts, the substitution of Sb(5+) for Zn(2+) induces lattice contraction and a variation in vacancy defects, and moreover the preferential accumulation and segregation of Sb in [001] planes results in the intense perturbation of atomic motion in the a-b plane. Under nonresonant conditions, nonpolar E(2)(high) and polar quasi-longitudinal optic (LO) modes decrease in frequency due to finite-size and phonon confinement effects. Under resonant conditions, localized excitons can ionize to free carriers and form plasmons at higher excitation power density, resulting in the transformation of scattering coupling from localized exciton-LO-phonon to LO-phonon-plasmon. The intensity ratio of 2LO/1LO decreases and multiphonon scattering shows a decrease in frequency with unequal neighboring interval, and moreover the scattering coupling between the continuum of electron-hole plasmon and the discrete LO phonons causes an asymmetric lineshape.

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Section: Resonance Raman Scattering (Rrs)mentioning

confidence: 87%

Lattice variation and Raman spectroscopy in hierarchical heterostructures of zinc antimonate nanoislands on ZnO nanobelts

Cheng¹,

Jiao²,

Sun³

et al. 2009

Nanotechnology

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“…A lot of work has been done in the area of transition metal doping of ZnO single crystals and thin films [88][89][90][91][92]. However, a few reports on the synthesis and characterization of ZnO nanostructures doped with different impurities like Al, Sn, Ga, In, Sb, Cu, etc are available in the literature [93][94][95][96][97][98]. Li et al [99] has synthesized ZnO nanorods doped with manganese (Mn), chromium (Cr) and cobalt (Co) in a hydrothermal synthesis using zinc nitrate, transition metal nitrate and hexamethylenetetramine.…”

Section: Doping Of Zno Nanostructures Through Hydrothermal Routesmentioning

confidence: 99%

Hydrothermal growth of ZnO nanostructures

Baruah

Dutta

2009

Science and Technology of Advanced Materials

1,009

492

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One-dimensional nanostructures exhibit interesting electronic and optical properties due to their low dimensionality leading to quantum confinement effects. ZnO has received lot of attention as a nanostructured material because of unique properties rendering it suitable for various applications. Amongst the different methods of synthesis of ZnO nanostructures, the hydrothermal method is attractive for its simplicity and environment friendly conditions. This review summarizes the conditions leading to the growth of different ZnO nanostructures using hydrothermal technique. Doping of ZnO nanostructures through hydrothermal method are also highlighted.

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“…In (b), although the ZnO peaks of A 1 (LO) and E 2 (low and high) are still observable, more complicated peaks appear and are ascribed to ZnO and NiSi, respectively. Among them, the 550 cm -1 peak is assigned to the interaction of photons with free carriers on the ZnO/NiSi interface [8]; 336 cm -1 ascribed to the ZnO second order mode [9][10][11][12]; while, 276 and 401 cm -1 still need further explanations. Also, NiSi peaks are observed at 197, 213, 256, 293, and 363 cm -1 .…”

Section: Resultsmentioning

confidence: 99%