Single crystalline zinc stannate nanoparticles for efficient photo-electrochemical devices

Miyauchi, Masahiro; Liu, Zhifu; Zhao, Zhigang; Anandan, Sambandam; Hara, Kohjiro

doi:10.1039/b921010e

Cited by 136 publications

(64 citation statements)

References 24 publications

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“…The amorphization of samples synthesized at 4°C at lower annealing temperature is quite interesting and will be later studied in greater details in a future work. The XRD patterns of the prepared ZTO samples were indexed to SnO 2 JCPDS (041-1445) [26], Zn 2 SnO 4 JCPDS (74-2184) [11], and ZnSnO 3 JCPDS (11-0274) [11]. The reference spectra are shown in Supplementary material (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Ternary semiconductor, ZTO, has high electron mobility, high electrical conductivity, and has attractive optical properties making it suitable for application in dye-sensitized solar cells [6], Li-ion batteries, amongst others [7][8][9]. Compared to the photoelectrodes fabricated with ZnO and SnO 2 particles in dyesensitized solar cell configuration, ZTO photoelectrodes are reported to be more stable and improve the solar cell performance [10,11]. ZTO has also been demonstrated to be an interesting material for gas sensing applications [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 98%

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Phase transformation behavior of zinc metastannates obtained by aqueous precipitation at different temperatures

Al-Hinai

Dutta

2014

J Mater Sci

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Phase transformation studies in ZnO-SnO 2 system from zinc metastannate (ZnSnO 3 ) to zinc orthostannate (Zn 2 SnO 4 ) with annealing temperature are reported. Non-centrosymmetric oxides show unique symmetry dependent and spontaneous polarization properties, which are technologically important. ZnSnO 3 particles were synthesized by a simple aqueous synthesis at low temperatures designed with the assistance of potential-pH diagrams. ZnSnO 3 particles synthesized at 4°C are more porous losing the ilmenite structure upon annealing at 200°C, while the other samples prepared at higher temperatures (25-65°C) becomes amorphous at 300°C. The phase transformation into the inverse spinel orthostannate phase occurs around 750°C in all the samples.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Phase transformation behavior of zinc metastannates obtained by aqueous precipitation at different temperatures

Al-Hinai

Dutta

2014

J Mater Sci

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“…Pursuant to the fact that bacteria developed resistance against many common antibacterial agents, concrete advances in developing promising therapeutic agent have been hard-won. In the context of combating bacteria noteworthy attention is directed towards metal oxide nanoparticles, which are proven to be effective for treating infectious diseases [1,2]. Recently zinc-based stannate materials have attracted considerable attention owing to their versatile applicability in diverse fields which includes photoelectrochemical cells, transparent conductive electrodes, Li-ion batteries, photocatalysts, and sensors [3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of zinc stannate nanoparticles for antibacterial applications

Jeronsia¹,

Joseph²,

Jaculine³

et al. 2016

Journal of Taibah University for Science

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A facile and economical hydrothermal method was adapted to synthesis spinal Zn 2 SnO 4 nanoparticles with cubic structure. The crystallography and optical properties of as synthesised nanoparticles have been studied using XRD (X-ray diffraction) and (UV-Vis)UV-Visible spectroscopy. The morphology of the nanoparticles has been revealed via FESEM (Field emission scanning electron microscopy). The synergetic antibacterial effect of Zn 2 SnO 4 nanoparticles against gram positive and gram negative pathogenic bacterial strains were investigated. The results suggest that Zn 2 SnO 4 nanoparticles have a potent antibacterial property against both gram classes of bacteria suggesting that nanoparticles of Zn 2 SnO 4 can be used as a bactericidal agent to prevent and control the spreading and persistence of infectious diseases.

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“…Thus the potential application of ZTO nanowires for use as a transparent conducting oxide (anode electrode) in sensitized solar cells 7,13,10 motivates the investigation of its optical and electronic properties. The primary goal of this work is to expand our understanding of ZTO nanowires through analysis of their steady state and time resolved emission spectra, and to use this data to develop a model describing the charge carrier dynamics in these nanowires 16 .…”

mentioning

confidence: 99%

“…Zn2SnO4 (Zinc Tin Oxide, ZTO), with an inverse spinel structure, is a wide band gap (3.7 eV) 9 , ntype metal oxide semiconductor 11 , which is also chemically and thermodynamically stable 11,12,13 .…”

mentioning

confidence: 99%

Steady state and time resolved optical characterization studies of Zn2SnO4 nanowires for solar cell applications

et al. 2016

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ABSTRACT:Nanowires are a promising option for sensitized solar cells, sensors, and display technology. Most of the work thus far has focused on binary oxides for these nanowires, but ternary oxides have advantages in additional control of optical and electronic properties. Here we report on the diffuse reflectance, Low Temperature (LT) and Room Temperature (RT) Photoluminescence (PL), PL Excitation (PLE) spectrum, and Time Resolved PL (TRPL) of Zinc Tin Oxide (ZTO) nanowires grown by Chemical Vapor Deposition. The PL from the ZTO nanowires does not exhibit any band gap or near gap emission, and diffuse reflectance measurement confirms that these ZTO nanowires have a direct forbidden transition.The broad PL spectrum reveals two Gaussian peaks centered at 1.86 eV (red) and 2.81 eV (blue), representing two distinct defect states or complexes. The PL spectra was further studied by Time Resolved Emission Spectrum (TRES) and intensity dependent PL and TRPL. The time resolved measurements show complex non-exponential decays at all wavelengths, indicative of defect to defect transitions, and the red emissive states decay much slower than the blue emissive states. The effects of annealing in air and vacuum are studied to investigate the origin of the defect states in the nanowires showing that the blue 2 states are related to oxygen vacancies. We propose an energy band model for the nanowires containing defect states within the band gap and the associated transitions between these states that are consistent with our measurements.

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Single crystalline zinc stannate nanoparticles for efficient photo-electrochemical devices

Cited by 136 publications

References 24 publications

Phase transformation behavior of zinc metastannates obtained by aqueous precipitation at different temperatures

Phase transformation behavior of zinc metastannates obtained by aqueous precipitation at different temperatures

Hydrothermal synthesis of zinc stannate nanoparticles for antibacterial applications

Steady state and time resolved optical characterization studies of Zn2SnO4 nanowires for solar cell applications

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