Development of Thin Film Amorphous Silicon Tandem Junction Based Photocathodes Providing High Open-Circuit Voltages for Hydrogen Production
Joint Authors
Lambertz, Andreas
Smirnov, Vladimir
Urbain, F.
Wilken, K.
Astakhov, O.
Becker, J.-P.
Ziegler, J.
Kaiser, B.
Jaegermann, W.
Finger, F.
Rau, U.
Source
International Journal of Photoenergy
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-16
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Hydrogenated amorphous silicon thin film tandem solar cells (a-Si:H/a-Si:H) have been developed with focus on high open-circuit voltages for the direct application as photocathodes in photoelectrochemical water splitting devices.
By temperature variation during deposition of the intrinsic a-Si:H absorber layers the band gap energy of a-Si:H absorber layers, correlating with the hydrogen content of the material, can be adjusted and combined in a way that a-Si:H/a-Si:H tandem solar cells provide open-circuit voltages up to 1.87 V.
The applicability of the tandem solar cells as photocathodes was investigated in a photoelectrochemical cell (PEC) measurement set-up.
With platinum as a catalyst, the a-Si:H/a-Si:H based photocathodes exhibit a high photocurrent onset potential of 1.76 V versus the reversible hydrogen electrode (RHE) and a photocurrent of 5.3 mA/cm2 at 0 V versus RHE (under halogen lamp illumination).
Our results provide evidence that a direct application of thin film silicon based photocathodes fulfills the main thermodynamic requirements to generate hydrogen.
Furthermore, the presented approach may provide an efficient and low-cost route to solar hydrogen production.
American Psychological Association (APA)
Urbain, F.& Wilken, K.& Smirnov, Vladimir& Astakhov, O.& Lambertz, Andreas& Becker, J.-P.…[et al.]. 2014. Development of Thin Film Amorphous Silicon Tandem Junction Based Photocathodes Providing High Open-Circuit Voltages for Hydrogen Production. International Journal of Photoenergy،Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1036810
Modern Language Association (MLA)
Urbain, F.…[et al.]. Development of Thin Film Amorphous Silicon Tandem Junction Based Photocathodes Providing High Open-Circuit Voltages for Hydrogen Production. International Journal of Photoenergy No. 2014 (2014), pp.1-10.
https://search.emarefa.net/detail/BIM-1036810
American Medical Association (AMA)
Urbain, F.& Wilken, K.& Smirnov, Vladimir& Astakhov, O.& Lambertz, Andreas& Becker, J.-P.…[et al.]. Development of Thin Film Amorphous Silicon Tandem Junction Based Photocathodes Providing High Open-Circuit Voltages for Hydrogen Production. International Journal of Photoenergy. 2014. Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1036810
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1036810