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Most published Xplore authors for Water Splitting

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Xplore Articles related to Water Splitting

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MIS Structures with Ruo2 Schottky Contact for Photoelectrochemical Water Splitting

2018 12th International Conference on Advanced Semiconductor Devices and Microsystems (ASDAM), 2018

This paper describes fabrication and characterisation of RuO2 based metal- insulator-semiconductor (MIS) structure for photoelectrochemical water splitting. The expected high catalytic activity, transparency, stability and conductivity of RuO2 make this material highly appealing for preparation of a photoanode with high performance. Optical, electrical and photoelectrochemical properties of RuO2 based MIS structures are compared with MIS structures with a Ni catalytic ...


High efficiency GaN nanowire/Si photocathode for photoelectrochemical water splitting

2017 IEEE 44th Photovoltaic Specialist Conference (PVSC), 2017

Photoelectrochemical (PEC) water splitting is one of the most promising technologies to convert solar energy into chemical energy in the form of hydrogen production. III-nitride semiconductors are promising materials to realize high efficiency photoelectrodes: their energy bandgap can be varied across nearly the entire solar spectrum by changing the alloy compositions and the band edge positions straddle water oxidation and ...


Thin-film silicon solar cells fabricated at low temperature: A versatile technology for application on transparent flexible plastic substrates and in integrated photoelectrochemical water splitting modules

2014 IEEE 40th Photovoltaic Specialist Conference (PVSC), 2014

Amorphous silicon (a-Si:H) solar cells in p-i-n configuration were developed at a low deposition temperature of 140 °C, suitable for application on transparent flexible plastic substrates. Deteriorated electronic properties of the p-layer with decreasing temperature were identified as the main reason for reduced solar cell performance. Optimization of the p-layer properties resulted in an efficiency of 8.2 % for a ...


Solar sintering and characterization of ZnO-TiO2-based photo-anode applicable for water splitting

International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014), 2014

This paper reports on the ZnO-TiO2ceramics sintered under solar radiation. The phase composition, structure, morphology and functional properties of ZnO- TiO2photo-anodes (used in photoelectrochemical cells for hydrogen generation from water splitting) were investigated.


Hydrogen production and ZnO/Zn hybrid nanostructure preparation through a water-splitting reaction

2011 International Conference on Materials for Renewable Energy & Environment, 2011

Firstly, the Zn-nanoparticles were prepared by vibration mill, then water vapour was carried in by Ar while they had been preheated. Once the water vapour contacted with Zn-nanoparticles, water-splitting reaction started, hydrogen yielded and solid zinc oxide nanostructures were gained. The hydrogen yield rate was tested, and the solid product by XRD, EDS and TEM. It's proved that the Zn-nanoparticles ...


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Educational Resources on Water Splitting

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IEEE-USA E-Books

  • MIS Structures with Ruo2 Schottky Contact for Photoelectrochemical Water Splitting

    This paper describes fabrication and characterisation of RuO2 based metal- insulator-semiconductor (MIS) structure for photoelectrochemical water splitting. The expected high catalytic activity, transparency, stability and conductivity of RuO2 make this material highly appealing for preparation of a photoanode with high performance. Optical, electrical and photoelectrochemical properties of RuO2 based MIS structures are compared with MIS structures with a Ni catalytic layer. The lower overpotential Vop=0.12V of RuO2 structure compared to Vop=0.3V obtained for Ni structure as well as higher saturation photocurrent indicates promising application of the developed RuO2 structures for solar water splitting.

  • High efficiency GaN nanowire/Si photocathode for photoelectrochemical water splitting

    Photoelectrochemical (PEC) water splitting is one of the most promising technologies to convert solar energy into chemical energy in the form of hydrogen production. III-nitride semiconductors are promising materials to realize high efficiency photoelectrodes: their energy bandgap can be varied across nearly the entire solar spectrum by changing the alloy compositions and the band edge positions straddle water oxidation and reduction potentials under deep visible light irradiation. In this work, we report on the demonstration of a Si-based photocathode, which consists of n+-GaN nanowire arrays grown on n+-p Si substrate and enables relatively high efficiency (~9%) and highly stable solar water splitting.

  • Thin-film silicon solar cells fabricated at low temperature: A versatile technology for application on transparent flexible plastic substrates and in integrated photoelectrochemical water splitting modules

    Amorphous silicon (a-Si:H) solar cells in p-i-n configuration were developed at a low deposition temperature of 140 °C, suitable for application on transparent flexible plastic substrates. Deteriorated electronic properties of the p-layer with decreasing temperature were identified as the main reason for reduced solar cell performance. Optimization of the p-layer properties resulted in an efficiency of 8.2 % for a solar cell fabricated entirely at 140 °C. As a parallel application scenario, a-Si:H/a-Si:H tandem solar cells are designed for application in integrated photoelectrochemical water splitting modules. Here we benefit from the increased open circuit voltages with values around 1.9 V which provides ample margin for possible overpotential losses in water splitting modules.

  • Solar sintering and characterization of ZnO-TiO2-based photo-anode applicable for water splitting

    This paper reports on the ZnO-TiO2ceramics sintered under solar radiation. The phase composition, structure, morphology and functional properties of ZnO- TiO2photo-anodes (used in photoelectrochemical cells for hydrogen generation from water splitting) were investigated.

  • Hydrogen production and ZnO/Zn hybrid nanostructure preparation through a water-splitting reaction

    Firstly, the Zn-nanoparticles were prepared by vibration mill, then water vapour was carried in by Ar while they had been preheated. Once the water vapour contacted with Zn-nanoparticles, water-splitting reaction started, hydrogen yielded and solid zinc oxide nanostructures were gained. The hydrogen yield rate was tested, and the solid product by XRD, EDS and TEM. It's proved that the Zn-nanoparticles with an average size of 45nm after 11 hours milling acted well when they contacted with water vapor carried by 5L/min Ar flow under temperature of 275°C, and the hydrogen yield rate could reach to a high level of 184.4ml/min in 20 minutes. The result of XRD and EDS shows there are both ZnO and Zn existing in solid product, and the TEM showed it had a great dispersivity featuring nano-rods hybrided with nano-flakes. This ZnO/Zn hybrid nanostructure has been proved to have great photocatalytic performance in the decomposition of dye wastewater.

  • Photoelectrochemical Water Splitting and Hydrogen Generation Using InGaN/GaN Nanowire Arrays

    We report on the photo electrochemical water splitting and hydrogen generation under visible light on highly stable InGaN/GaN nanowire photo electrodes.

  • Zinc oxide thin film fabricated by thermal evaporation method for water splitting application

    The aim of this paper is to fabricate zinc oxide (ZnO) photoelectrode by a modified thermal evaporation system for water splitting application. At first, zinc thin film has been deposited on bare fluorine doped tin oxide (FTO) glass substrate by a modified thermal evaporation system with chamber pressure 0.05 mbar, source temperature 700°C, source substrate distance 3 cm and deposition time 5 min. For obtaining ZnO thin film, the prepared zinc film is annealed at 500°C for 2 hours in atmosphere. The prepared ZnO film is characterized and investigated the photoelectrochemical performance and suitability for splitting of water.

  • Overall Water Splitting under Broadband Light Using InGaN/GaN Nanowire Heterostructures

    Here we report stoichiometric and stable evolution of H2 and O2 from pure (pH ~7.0) water under ultraviolet, blue and green light irradiation using wafer- scale InGaN/GaN triple-band nanowire heterostructures.

  • Thermal efficiency improvement of hydrogen production via thermochemical water splitting

    This paper examines heat recovery in a thermochemical Cu-Cl cycle for efficient hydrogen production. It is essential to recover heat within the Cu- Cl cycle to improve the overall thermal efficiency of the cycle. A major portion of heat recovery can be achieved by cooling and solidifying the molten salt exiting an oxygen reactor. Heat recovery from the molten salt is achieved by dispersing the molten stream into droplets. In this paper, an analytical study and experimental investigation of the thermal phenomena of a falling droplet quenched into water is presented, involving the droplet surface temperature during descent and resulting composition change in the quench process. The results show it is feasible to quench the molten salt droplets for an efficient heat recovery process without introducing any material imbalance for the overall cycle integration.

  • Hematite nanostructures for high efficient solar water splitting

    Hematite has emerged as a good photocatalyst for efficient solar water splitting due to its favorable optical band gap (2.1-2.2 eV), extraordinary chemical stability in oxidative environment, abundance, and low cost. According to theoretical prediction, the solar-to-hydrogen efficiency of hematite can be 16.8% and the water splitting photocurrent can be 12.6 mA cm-2. However, the practical performance of hematite for solar water splitting is far from the ideal case which has been limited by several factors such as poor conductivity, short lifetime of the excited-state carrier (10-12s), poor oxygen evolution reaction (OER) kinetics, short hole diffusion length (2-4nm), and improper band position for unassisted water splitting. In our recent work, enormous efforts have been focused on improving the performance of hematite nanostructure photoelectrode. Different methods such as morphology control, elemental doping, and improvement of the charge transport of hematite have been developed to improve the performance of hematite photoelectrode in solar water splitting.



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