scholarly journals Performance and failure modes of Si anodes patterned with thin-film Ni catalyst islands for water oxidation

2018 ◽  
Vol 2 (5) ◽  
pp. 983-998 ◽  
Author(s):  
Ke Sun ◽  
Nicole L. Ritzert ◽  
Jimmy John ◽  
Haiyan Tan ◽  
William G. Hale ◽  
...  
Keyword(s):  
Thin Film ◽  
Water Oxidation ◽  
Failure Modes ◽  
Continuous Operation ◽  
Ni Catalyst ◽  
Si Anodes

Silicon photoanodes patterned with thin-film Ni catalyst islands exhibited stable sunlight-driven O2evolution for over 240 h of continuous operation in 1.0 M KOH.

Corrosion of Electronic and Magnetic Devices and Materials

1996 ◽  
Vol 451 ◽  
Author(s):  
Gerald S. Frankel
Keyword(s):  
Thin Film ◽  
Failure Modes ◽  
Galvanic Corrosion ◽  
Potential Drop ◽  
Magnetic Devices ◽  
Disk Structure ◽  
Magnetic Layers ◽  
Ohmic Potential Drop ◽  
Corrosion Problem ◽  
Corrosion Susceptibility

ABSTRACTCorrosion of thin film structures commonly used in electronic and magnetic devices is discussed. Typical failure modes are presented, and galvanic corrosion is discussed in some detail since it is one common problem with such devices. A graphical explanation for the determination of the ohmic potential drop during galvanic corrosion is presented. The corrosion problem of thin film disks is shown to have changed during the past ten years owing to changes in disk structure. The corrosion susceptibility of two antiferromagnetic alloys used for exchange coupling to soft magnetic layers is discussed.

scholarly journals Flow Cell for Operando X-Ray Photon-in-Photon-out Studies on Photo-Electrochemical Thin Film Devices

2020 ◽  
Author(s):  
Philipp Jäker ◽  
Dino Aegerter ◽  
Till Kyburz ◽  
Roman Staedler ◽  
Rea Fonjallaz ◽  
...  
Keyword(s):  
Thin Film ◽  
Water Oxidation ◽  
High Energy ◽  
Operating Conditions ◽  
High Energy Resolution ◽  
X Ray ◽  
Long Term Stability ◽  
Operando Xas ◽  
Artificial Photosynthetic ◽  
Thin Film Devices

Photo-electro-chemical (PEC) water splitting represents a promising technology towards an artificial photosynthetic device but many fundamental electronic processes, which govern long-term stability and energetics are not well understood. X-ray absorption spectroscopy (XAS), particularly its high energy resolution fluorescence-detected (HERFD) mode, emerges as a powerful tool to study photo-excited charge carrier behavior under operating conditions. The established thin film device architecture of PEC cells provides a well-defined measurement geometry, but it puts many constraints on conducting operando XAS experiments. So far, operando cells have not been developed that enable to concurrently measure highly intense X-ray fluorescence and photo-electro-chemical current without experimental artifacts caused by O<sub>2</sub> and H<sub>2</sub> bubbles formation. Moreover, we are missing a standardized thin film exchange procedure. Here, we address and overcome the instrumental limitations for operando HERFD-XAS to investigate photo- and electrochemical thin film devices. Our cell establishes a measurement routine that will provide experimental access to a broader scientific community, particularly due to the ease of sample exchange. Our operando photo-electro-chemical cell is optimized for the HERFD-XAS geometry and we demonstrate its operation by collecting high-resolution Fe K-edge spectra of hematite (α-Fe<sub>2</sub>O<sub>3</sub>) and ferrite thin film (MFe<sub>2</sub>O<sub>4</sub>, M= Zn, Ni) photoelectrodes during water oxidation.<br>

“Hybrid Tandem Device Based on Thin-Film Silicon Photovoltaics and Nanostructured Water Oxidation Catalysts for Solar Water Splitting”

2019 ◽  
Author(s):  
Drialys Cardenas-Morcoso ◽  
Tsvetelina Merdzhanova ◽  
Vladimir Smirnov ◽  
Friedhelm Finger ◽  
Bernhard Kaiser ◽  
...  
Keyword(s):  
Thin Film ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxidation Catalysts ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Thin Film Silicon ◽  
Silicon Photovoltaics

Enhanced Photoelectrochemical Water Oxidation Performance by Fluorine Incorporation in BiVO4 and Mo:BiVO4 Thin Film Photoanodes

2019 ◽  
Vol 11 (18) ◽  
pp. 16430-16442 ◽  
Author(s):  
Martin Rohloff ◽  
Björn Anke ◽  
Olga Kasian ◽  
Siyuan Zhang ◽  
Martin Lerch ◽  
...  
Keyword(s):  
Thin Film ◽  
Water Oxidation ◽  
Oxidation Performance ◽  
Photoelectrochemical Water Oxidation

scholarly journals Synergies of co-doping in ultra-thin hematite photoanodes for solar water oxidation: In and Ti as representative case

RSC Advances ◽  
2020 ◽  
Vol 10 (55) ◽  
pp. 33307-33316
Author(s):  
Aadesh P. Singh ◽  
Camilla Tossi ◽  
Ilkka Tittonen ◽  
Anders Hellman ◽  
Björn Wickman
Keyword(s):  
Thin Film ◽  
Hydrogen Production ◽  
Solar Energy ◽  
Water Splitting ◽  
Water Oxidation ◽  
Representative Case ◽  
Solar Water ◽  
Co Doping ◽  
Pec Cells ◽  
Solar Water Oxidation

Solar energy induced water splitting in photoelectrochemical (PEC) cells is one of the most sustainable ways of hydrogen production. In this work, hematite (α-Fe2O3) thin film were modified by In3+ and Ti4+ co-doping for enhanced PEC performance.

Passivation of surface states by ALD-grown TiO2 overlayers on Ta3N5 anodes for photoelectrochemical water oxidation

2016 ◽  
Vol 52 (57) ◽  
pp. 8806-8809 ◽  
Author(s):  
Peng Zhang ◽  
Tuo Wang ◽  
Jinlong Gong
Keyword(s):  
Thin Film ◽  
Atomic Layer Deposition ◽  
Water Oxidation ◽  
Surface States ◽  
Atomic Layer ◽  
Layer Deposition ◽  
Photoelectrochemical Water Oxidation

This paper describes the fabrication of TiO2 overlayers by atomic layer deposition to passivate the surface states on Ta3N5 thin film anodes for photoelectrochemical water oxidation.

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