Title:
METHODS AND SYSTEMS RELATING TO PHOTOCHEMICAL WATER SPLITTING
Document Type and Number:
WIPO Patent Application WO/2016/015134
Kind Code:
A8
Abstract:
InGaN offers a route to high efficiency overall water splitting under one-step photo- excitation. Further, the chemical stability of metal-nitrides supports their use as an alternative photocatalyst. However, the efficiency of overall water splitting using InGaN and other visible light responsive photocatalysts has remained extremely low despite prior art work addressing optical absorption through band gap engineering. Within this prior art the detrimental effects of unbalanced charge carrier extraction/collection on the efficiency of the four electron-hole water splitting reaction have remained largely unaddressed. To address this growth processes are presented that allow for controlled adjustment and establishment of the appropriate Fermi level and / or band bending in order to allow the photochemical water splitting to proceed at high rate and high efficiency. Beneficially, establishing such material surface charge properties also reduces photo-corrosion and instability under harsh photocatalysis conditions.
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Inventors:
ML ZETIAN (CA)
KIBRIA MD GOLAM (CA)
CHOWDHURY MOHAMMAD FAQRUL ALAM (CA)
KIBRIA MD GOLAM (CA)
CHOWDHURY MOHAMMAD FAQRUL ALAM (CA)
Application Number:
PCT/CA2015/000449
Publication Date:
March 31, 2016
Filing Date:
July 31, 2015
Export Citation:
Assignee:
UNIV MCGILL (CA)
International Classes:
C25B1/04; B82Y30/00; H01L29/20
Attorney, Agent or Firm:
PERLEY-ROBERTSON, HILL & MCDOUGALL LLP/SRL et al. (Ottawa, Ontario K1R 0A5, CA)
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