Synergetic effects of II-VI sensitization upon TiO{sub 2} for photoelectrochemical water splitting; a tri-layered structured scheme
- Department of Fundamental and Applied Sciences, University Teknologi PETRONAS (Malaysia)
World's energy demands are growing on a higher scale increasing the need of more reliable and long term renewable energy resources. Efficient photo-electrochemical (PEC) devices based on novel nano-structured designs for solar-hydrogen generation need to be developed. This study provides an insight of the tri-layered-TiO2 based nanostructures. Observing the mechanism of hydrogen production, the comparison of the structural order during the synthesis is pronounced. The sequence in the tri-layered structure affects the photogenerated electron (e{sup −}) and hole (h{sup +}) pair transfer and separation. It is also discussed that not only the semiconductors band gaps alignment is important with respect to the water redox potential but also the interfacial regions. Quasi-Fermi-level adjustment at the interfacial regions plays a key role in deciding the solar to hydrogen efficiency. More efficient multicomponent semiconductor nano-design (MCSN) could be developed with the approach given in this study.
- OSTI ID:
- 22308082
- Journal Information:
- AIP Conference Proceedings, Vol. 1621, Issue 1; Conference: ICSAS 2014: 3. international conference on fundamental and applied sciences: Innovative research in applied sciences for a sustainable future, Kuala Lumpur (Malaysia), 3-5 Jun 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
COMPARATIVE EVALUATIONS
ELECTROCHEMISTRY
ELECTRONS
ENERGY DEMAND
FERMI LEVEL
HYDROGEN
HYDROGEN PRODUCTION
INTERSTITIAL HYDROGEN GENERATION
NANOSTRUCTURES
PHOTOCHEMISTRY
REDOX POTENTIAL
RENEWABLE ENERGY SOURCES
SEMICONDUCTOR MATERIALS
SYNTHESIS
TITANIUM OXIDES
WATER