Band engineering for efficient catalyst-substrate coupling for photoelectrochemical water splitting
| Autor: | Vladimir Smirnov, Wolfram Jaegermann, Jürgen Ziegler, Rolf Schäfer, Bernhard Kaiser, Aldin Radetinac, Jan-Philipp Becker, Joachim Klett, Friedhelm Finger, Félix Urbain |
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| Rok vydání: | 2016 |
| Předmět: |
Coupling
Amorphous silicon Materials science Substrate coupling business.industry General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Corrosion chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Water splitting Optoelectronics Physical and Theoretical Chemistry Thin film 0210 nano-technology business Layer (electronics) |
| Zdroj: | Physical chemistry chemical physics : PCCP. 18(16) |
| ISSN: | 1463-9084 |
| Popis: | To achieve an overall efficient solar water splitting device, not only the efficiencies of photo-converter and catalyst are decisive, but also their appropriate coupling must be considered. In this report we explore the origin of a voltage loss occurring at the interface between a thin film amorphous silicon tandem cell and the TiO2 corrosion protection layer by means of XPS. We find that the overall device can be disassembled into its primary constituents and that they can be analyzed separately, giving insight into the device structure as a whole. Thus, a series of model experiments were conducted, each representing a part of the complete device. We finally arrive at the conclusion, that the formation of a SiO2 interfacial layer between the TiO2 protection layer and the silicon cell gives rise to the voltage loss observed for the whole device. |
| Databáze: | OpenAIRE |
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