Doping introduce nucleation site barrier in ZnO nano/micro rod arrays film grown by chemical bath deposition

Soundarrajan, P.; Sampath, M.; Logu, T.; Sethuraman, K.; Ramamurthi, K.

doi:10.1016/j.matlet.2015.10.015

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…These values deviate from the standard values for the bulk ZnO ( c/a and u parameters as 1.6333 and 0.375, respectively); this infers that Zn-O bond length is different in c-axis . Further Zn-O bond length was calculated using formulae u·c (along c- axis ) and [ a 2 /3 + (1/2 − u ) 2 c 2 ] 1/2 (perpendicular to c-axis ) [27] . Thus bond distance values calculated for R1 and R2 are 1.9908 Å and 1.9892 Å along c, 1.9745 Å and 1.9743 Å in other direction , respectively.…”

Section: Resultsmentioning

confidence: 99%

Structural and electronic investigation of ZnO nanostructures synthesized under different environments

Bhardwaj

Bharti

Singh

et al. 2018

Heliyon

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An explicit study of comparison on the basis of structure and electronic properties of ZnO nanostructures was discussed. ZnO synthesized by sol-gel and hydrothermal method without using any surfactant leads to the formation of two different morphologies. Rietveld crystal structure refinement of X-ray diffraction patterns confirmed the wurtzite structure of both samples. Raman spectra also confirmed the wurtzite phase formation and improved crystallinity in sample synthesized by hydrothermal route that are concurrent with results obtained from X-ray diffraction. Field-emission scanning electron microscopy revealed the formation of ZnO spherical nanoparticle structure for sol-gel method and flower like μ-structure for ZnO prepared through hydrothermal route. Williamson-Hall equations applied to study the strain and stress parameters present in the material, show the decrease in their values as the crystal size increases. Energy band gap is calculated using diffused reflectance spectroscopy. Near-edge X-ray absorption fine-structure measurements at O K- and Zn L3,2- edges simulated with FEFF9.05 code confirmed the presence of oxygen vacancies. Further extended x-ray absorption fine-structure revealed a similar local atomic structure for both samples despite having different morphologies.

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Section: Resultsmentioning

confidence: 99%

Structural and electronic investigation of ZnO nanostructures synthesized under different environments

Bhardwaj

Bharti

Singh

et al. 2018

Heliyon

View full text Add to dashboard Cite

show abstract

“…All the XRD diffraction peaks were assigned to the wurtzite ZnO according to the JCPDS Card 36-1451 [43,44]. 4(c), the predominant peak at ∼93 cm −1 is assigned to the low-frequency E2 modes of the lattice vibration of Zn atoms [45]. Another detectable Raman peak at ∼427 cm −1 is assignable to the first-order high-frequency E2 mode of the wurtzite ZnO crystal [46].…”

Section: Resultsmentioning

confidence: 99%

Three dimensional carbon-bubble foams with hierarchical pores for ultra-long cycling life supercapacitors

et al. 2018

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Design and synthesis of integrated, interconnected porous structures are critical to the development of high-performance supercapacitors. We develop a novel and facile synthesis technic to construct three-dimensional carbon-bubble foams with hierarchical pores geometry. The carbon-bubble foams are fabricated by conformally coating, via catalytic decomposition of ethanol, a layer of carbon coating onto the surfaces of pre-formed ZnO foams and then the removal of the ZnO template by a reduction-evaporation process. Both the wall thickness and the pore size can be well tuned by adjusting the catalytic decomposition time and temperature. The as-synthesized carbon-bubble foams electrode retains 90.3% of the initial capacitance even after 70 000 continuous cycles under a high current density of 20 A g, demonstrating excellent long-time electrochemical and cycling stability. The symmetric device displays rate capability retention of 81.8% with the current density increasing from 0.4 to 20 A g. These achieved electrochemical performances originate from the unique structural design of the carbon-bubble foams, which provide not only abundant transport channels for electron and ion but also high active surface area accessible by the electrolyte ions.

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“…In this respect, ZnO seems to be a potential replacement having a similar wide band gap of 3.37 eV suitable for transparent electron transport layer and higher electron mobility than TiO 2 [14,15] . High quality ZnO nanostructures can also be fabricated at low temperatures using various solution techniques [16][17][18][19][20] . Kelly et al have reported a highly efficient perovskite solar cell with a PCE of 15.7% based on ZnO nanoparticles prepared by spin coating [21] .…”

Section: Introductionmentioning

confidence: 99%

Effect of rubrene:P3HT bilayer on photovoltaic performance of perovskite solar cells with electrodeposited ZnO nanorods

Pelicano

Yanagi

2018

Journal of Energy Chemistry

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Doping introduce nucleation site barrier in ZnO nano/micro rod arrays film grown by chemical bath deposition

Cited by 4 publications

References 8 publications

Structural and electronic investigation of ZnO nanostructures synthesized under different environments

Structural and electronic investigation of ZnO nanostructures synthesized under different environments

Three dimensional carbon-bubble foams with hierarchical pores for ultra-long cycling life supercapacitors

Effect of rubrene:P3HT bilayer on photovoltaic performance of perovskite solar cells with electrodeposited ZnO nanorods

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