Microstructure evolution and enhanced green luminescence in P-doped ZnO nanowires

Liu, J.; Xie, S.F.; Cao, Yinwen; Chen, Y.L.; Zeng, Huidan; Yang, Jing; Liu, F.; Wang, X.Y.

doi:10.1016/j.matlet.2011.11.100

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…The PL spectrum of the as-grown core/shell nanorods shows a UV emission centered at 380 nm and a broad visible emission spanning the range from green to red. The UV emission can be attributed to the recombination of near-band edge excitons of ZnO, while the visible emission is known to come from deep level defects [12]. After being annealed, the visible/UV ratio increases with the increase of the annealing temperature, and the positions of the visible emission are changed.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, SnO 2 may also contribute to the origin of the yellow emission, since it has been reported that SnO 2 nanostructures showed a weak broad yellow emission band, which originated from deep levels such as O and Sn vacancies [15]. The green emission has been attributed to the singly ionized oxygen vacancy [12]. As to our sample, the shift from yellow to green in the visible emission by annealing can be attributed to the desorption of hydroxyl group [13,14] and the increase of oxygen vacancies.…”

Section: Resultsmentioning

confidence: 99%

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Effects of annealing temperature on the properties of ZnO/SnO2 core/shell nanorod arrays

Sang

et al. 2012

Materials Letters

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effects of annealing temperature on the properties of ZnO/SnO2 core/shell nanorod arrays

Sang

et al. 2012

Materials Letters

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“…Phosphor (P) doping was reported to be effective in modifying the electrical conducting performances of ZnO nanostructures [ 12 , 17 , 18 ], whereas P doping induces variation of microstructures and optical properties of ZnO. Our previous work showed that P doping in ZnO nanostructures restrained the growth of ZnO along a [0001] direction, resulting in the morphology evolution from nanorods to nanoplatelets [ 19 ], and a similar phenomenon was observed in other works [ 17 ]. Though many efforts have been performed, controllable growth of P-doped ZnO nanostructures with desired morphologies and properties is still challenging, which requires comprehensive understanding on the growth mechanism of ZnO nanostructures by P doping.…”

Section: Introductionmentioning

confidence: 59%

Controllable Growth of Ultrathin P-doped ZnO Nanosheets

et al. 2016

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Ultrathin phosphor (P)-doped ZnO nanosheets with branched nanowires were controllably synthesized, and the effects of oxygen and phosphor doping on the structural and optical properties were systematically studied. The grown ZnO nanosheet exhibits an ultrathin nanoribbon backbone with one-side-aligned nanoteeth. For the growth of ultrathin ZnO nanosheets, both oxygen flow rate and P doping are essential, by which the morphologies and microstructures can be finely tuned. P doping induces strain relaxation to change the growth direction of ZnO nanoribbons, and oxygen flow rate promotes the high supersaturation degree to facilitate the growth of nanoteeth and widens the nanoribbons. The growth of P-doped ZnO in this work provides a new progress towards the rational control of the morphologies for ZnO nanostructures.

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“…Although the growth of ZnO NWs has been broadly investigated, ,,,,,− ,,− the understanding of alloy catalysts on the growth behavior is surprisingly rare and seldom studied. To our knowledge, there are no previous studies on Au–Ga catalyst for ZnO NWs growth, but such studies could be very beneficial catalysts due to the less contamination nature of alloys compared to pure noble metals.…”

Section: Results and Discussionmentioning

confidence: 99%

Focused-ion-beam Assisted Growth, Patterning, and Narrowing the Size Distributions of ZnO Nanowires for Variable Optical Properties and Enhanced Nonmechanical Energy Conversion

et al. 2013

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Despite extensive research and much progress, it remains critical and challenging to precisely grow nanowires structurally and dimensionally uniform. Here, we present a focused-ion-beam (FIB) assisted approach to controlling the ZnO nanowire growth with uniform diameters, height, and high crystalline quality. Vertical-alignment is also achieved on nonepitaxial substrates without the assistance of ZnO seeding layers (e.g., silicon and c-plane sapphire substrates). The programmable ability of FIB opens up new opportunities of creating complex patterns in our approach. A new alloy catalyst Au–Ga is developed for ZnO growth, with achievable narrow nanowire size distributions. Comparison studies of growth behavior in the temperature range 880–940 °C for Au and Au–Ga catalysts reveal different growth kinetics and rate-controlling mechanisms that are consistent with the vertical-alignment and drastically improved nanowire uniformity for FIB-assisted nanowire growth. Nanogenerators built with the improved nanowire platform exhibit a 2.5-fold increase in thermal energy conversion, demonstrating the promise of our approach for advanced functional devices.

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Microstructure evolution and enhanced green luminescence in P-doped ZnO nanowires

Cited by 6 publications

References 11 publications

Effects of annealing temperature on the properties of ZnO/SnO2 core/shell nanorod arrays

Effects of annealing temperature on the properties of ZnO/SnO2 core/shell nanorod arrays

Controllable Growth of Ultrathin P-doped ZnO Nanosheets

Focused-ion-beam Assisted Growth, Patterning, and Narrowing the Size Distributions of ZnO Nanowires for Variable Optical Properties and Enhanced Nonmechanical Energy Conversion

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