Urbain, Félix ; Smirnov, Vladimir ; Becker, Jan-Philipp ; Rau, Uwe ; Finger, Friedhelm ; Ziegler, Jürgen ; Kaiser, Bernhard ; Jaegermann, Wolfram (2014)
a-Si:H/µc-Si:H tandem junction based photocathodes with high open-circuit voltage for efficient hydrogen production.
In: Journal of Materials Research, 29 (22)
doi: 10.1557/jmr.2014.308
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Thin film silicon tandem junction solar cells based on amorphous silicon (a-Si:H) and microcrystalline silicon (µc-Si:H) were developed with focus on high open-circuit voltages for the application as photocathodes in integrated photoelectrochemical cells for water electrolysis. By adjusting various parameters in the plasma enhanced chemical vapor deposition process of the individual µc-Si:H single junction solar cells, we showed that a-Si:H/µc-Si:H tandem junction solar cells exhibit open-circuit voltage over 1.5 V with solar energy conversion efficiency of 11% at a total silicon layer thickness below 1 µm. Our approach included thickness reduction, controlled SiH4 profiling, and incorporation of intrinsic interface buffer layers. The applicability of the tandem devices as photocathodes was evaluated in a photoelectrochemical cell. The a-Si:H/µc-Si:H based photocathodes exhibit a photocurrent onset potential of 1.3 V versus RHE and a short-circuit photocurrent of 10.0 mA/cm2. The presented approach may provide an efficient and low-cost pathway to solar hydrogen production.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Urbain, Félix ; Smirnov, Vladimir ; Becker, Jan-Philipp ; Rau, Uwe ; Finger, Friedhelm ; Ziegler, Jürgen ; Kaiser, Bernhard ; Jaegermann, Wolfram |
| Art des Eintrags: | Bibliographie |
| Titel: | a-Si:H/µc-Si:H tandem junction based photocathodes with high open-circuit voltage for efficient hydrogen production |
| Sprache: | Englisch |
| Publikationsjahr: | November 2014 |
| Verlag: | Cambridge University Press |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Materials Research |
| Jahrgang/Volume einer Zeitschrift: | 29 |
| (Heft-)Nummer: | 22 |
| DOI: | 10.1557/jmr.2014.308 |
| Kurzbeschreibung (Abstract): | Thin film silicon tandem junction solar cells based on amorphous silicon (a-Si:H) and microcrystalline silicon (µc-Si:H) were developed with focus on high open-circuit voltages for the application as photocathodes in integrated photoelectrochemical cells for water electrolysis. By adjusting various parameters in the plasma enhanced chemical vapor deposition process of the individual µc-Si:H single junction solar cells, we showed that a-Si:H/µc-Si:H tandem junction solar cells exhibit open-circuit voltage over 1.5 V with solar energy conversion efficiency of 11% at a total silicon layer thickness below 1 µm. Our approach included thickness reduction, controlled SiH4 profiling, and incorporation of intrinsic interface buffer layers. The applicability of the tandem devices as photocathodes was evaluated in a photoelectrochemical cell. The a-Si:H/µc-Si:H based photocathodes exhibit a photocurrent onset potential of 1.3 V versus RHE and a short-circuit photocurrent of 10.0 mA/cm2. The presented approach may provide an efficient and low-cost pathway to solar hydrogen production. |
| Freie Schlagworte: | photovoltaic, photochemical, Si |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 27 Feb 2015 12:44 |
| Letzte Änderung: | 29 Mär 2015 17:09 |
| PPN: | |
| Sponsoren: | The research is partly financially supported by the Deutsche Forschungsgemeinschaft (DFG) Priority Programme 1613: , Regeneratively produced fuels by light driven water splitting: Investigation of involved elementary processes and perspectives of technologic implementation, , and by the Bundesministerium für Bildung und Forschung (BMBF) in the network project: Sustainable Hydrogen (FKZ 03X3581B). |
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