InGaN working electrodes with assisted bias generated from GaAs solar cells for efficient water splitting

Shu Yen Liu, J. K. Sheu, Yu Chuan Lin, Yu Tong Chen, S. J. Tu, M. L. Lee, W. C. Lai

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Hydrogen generation through water splitting by n-InGaN working electrodes with bias generated from GaAs solar cell was studied. Instead of using an external bias provided by power supply, a GaAs-based solar cell was used as the driving force to increase the rate of hydrogen production. The water-splitting system was tuned using different approaches to set the operating points to the maximum power point of the GaAs solar cell. The approaches included changing the electrolytes, varying the light intensity, and introducing the immersed ITO ohmic contacts on the working electrodes. As a result, the hybrid system comprising both InGaNbased working electrodes and GaAs solar cells operating under concentrated illumination could possibly facilitate efficient water splitting.

Original languageEnglish
Pages (from-to)A991-A996
JournalOptics Express
Volume21
Issue number106
DOIs
Publication statusPublished - 2013 Nov 4

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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