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Perylene Diimide Aggregates on Sb-Doped SnO2: Charge Transfer Dynamics Relevant to Solar Fuel Generation
- Source :
- Journal of physical chemistry. C 121 (2017): 17737–17745. doi:10.1021/acs.jpcc.7b05928, info:cnr-pdr/source/autori:Berardi, Serena; Cristino, Vito; Canton, Martina; Boaretto, Rita; Argazzi, Roberto; Benazzi, Elisabetta; Ganzer, Lucia; Borrego Varillas, Rocío; Cerullo, Giulio; Syrgiannis, Zois; Rigodanza, Francesco; Prato, Maurizio; Bignozzi, Carlo Alberto; Caramori, Stefano/titolo:Perylene Diimide Aggregates on Sb-Doped SnO2: Charge Transfer Dynamics Relevant to Solar Fuel Generation/doi:10.1021%2Facs.jpcc.7b05928/rivista:Journal of physical chemistry. C/anno:2017/pagina_da:17737/pagina_a:17745/intervallo_pagine:17737–17745/volume:121, The Journal of Physical Chemistry C
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- The deposition of perylene diimide-based aggregates (PDI) onto wide band gap n-type Sb-doped SnO2 (ATO) was investigated with the aim of finding efficient and versatile dye-sensitized platforms :for photoelectrochemical solar fuel generation. These ATO-PDI photoanodes displayed hydrolytic stability in a wide range of pH (from 1 to 13) and revealed superior perforthances (up to 1 mA/cm(2) net photocurrent at 1 V vs SCE) compared to both WO3-PDI and: undoped SnO2-PDI when used in a photoelectrochemical setup for HBr splitting. Although ATO, SnO2, and WO3 are endowed with similar conduction band edge energetics, in ATO the presence-of a:significant density of intrabandgap states, whose occupancy Varies with the applied potential, plays a substantial role in tuning the efficiency of photoinduced charge separation and collection. Furthermore, the investigation of the charge injection kinetics confirmed that, even in the absence of applied bias, ATO and WO3 are the best substrates for the-oxidative quenching of poorly reducing PDI excited states, with at least a fraction of them injecting within
- Subjects :
- 02 engineering and technology
010402 general chemistry
Photochemistry
Electronic, Optical and Magnetic Materials
Energy (all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
7. Clean energy
01 natural sciences
Coatings and Films
chemistry.chemical_compound
Diimide
Electronic
Optical and Magnetic Materials
Photocurrent
Quenching (fluorescence)
Electronic, Optical and Magnetic Material
Doping
Wide-bandgap semiconductor
Ambientale
021001 nanoscience & nanotechnology
Solar fuel
0104 chemical sciences
Surfaces
General Energy
chemistry
Photoinduced charge separation
WATER OXIDATION
PHOTOELECTROCHEMICAL CELLS
ELECTRON-TRANSFER
ENERGY
DYES
WO3
PHOTOELECTROLYSIS
PHOTOCATALYST
SPECTROSCOPY
PHOTOANODES
0210 nano-technology
Perylene
Subjects
Details
- ISSN :
- 19327455 and 19327447
- Volume :
- 121
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry C
- Accession number :
- edsair.doi.dedup.....9cd81231d093c8a385f2e5bf17abd622