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Title: Improved visible light driven photoelectrochemical properties of 3C-SiC semiconductor with Pt nanoparticles for hydrogen generation

We propose the n-type 3C-SiC with Pt nanoparticles (Pt NPs) as photo-anode for photoelectrochemical hydrogen (H{sub 2}) generation. We found that band-edge structure of 3C-SiC is suitable for H{sub 2} generation, and the property can be optimized by dopant (nitrogen) concentration in 3C-SiC. We also confirmed that Pt NPs enhance photoelectrochemical properties showing 0.2%–0.8% higher Incident Photon-to-Current Efficiency than bare 3C-SiC in visible wavelength despite diminished light absorption. Solar-conversion efficiency increases approximately 6.3 times, and H{sub 2} production is improved by 6.5 times with 33% of Faradaic efficiency. Lastly, 3C-SiC surface corrosion is effectively inhibited.
Authors:
; ; ;  [1] ; ;  [2] ;  [3]
  1. Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552 (Japan)
  2. Department of Applied Chemistry, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552 (Japan)
  3. Program for Leading Graduate Schools, Academy for Co-Creative Education of Environment and Energy Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552 (Japan)
Publication Date:
OSTI Identifier:
22217855
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 21; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION; ABUNDANCE; ANODES; APPROXIMATIONS; CONCENTRATION RATIO; CORROSION; ECOLOGICAL CONCENTRATION; EFFICIENCY; HYDROGEN; INTERSTITIAL HYDROGEN GENERATION; NANOSTRUCTURES; NITROGEN; PHOTONS; PLATINUM; SEMICONDUCTOR MATERIALS; SILICON CARBIDES; SURFACES; WAVELENGTHS