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The first and main part of this work attempts to elucidate the reaction path of the CdSe quantum dots’ synthesis, and especially their nucleation, using density functional theory (DFT). The studied synthesis uses cadmium acetate and trialkylphosphine selenide as reactants. It is carried out at 120°C and 3 bar. The energy profile of involved species is established for temperature and pressure variations. The two paths contemplated provide thermochemical information about the nucleation of CdSe. In the continuity of the first part, the second one is dedicated to the study of the respective structures of CdnSen where n=2, 13 and 33, with a focus on Cd13Se13. The interactions of Cd13Se13 with acetate and cadmium acetate ligands are studied regarding their stability and some of their characteristics resulting from UV-visible absorption spectroscopy.

Nanoparticule --- CdSe --- DFT --- Chemin de réaction --- Ligands --- Acétate --- Physique, chimie, mathématiques & sciences de la terre > Chimie

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The direct conversion of sunlight into electricity (photovoltaic or PV for short) is evolving rapidly, and is a technology becoming a mainstream clean energy production method. However, to compete with conventional energy production methods using fossil fuels, the conversion efficiency needs to be increased, and the manufacturing cost should be reduced further. Both of these require the improvement of solar energy materials, and the device architectures used for the conversion of light into electrical energy. This Special Issue presents the latest developments in some solar energy materials like Si, CdTe, CIGS, SnS and Perovskites), and the device structures suitable for next generation solar cells. In particular, the progress in graded bandgap multi-layer solar cells are presented in this Special Issue.

electroplating --- semiconductors --- large-area electronics --- characterisation --- solar cells --- perovskite solar cell --- hole blocking layer --- solution spin-coating --- TiO2/SnO2 layer --- anti-reflection coating --- potential-induced degradation --- solar cell --- plasma enhanced chemical vapor deposition --- organic solar cells --- perovskite solar cells --- encapsulation --- stability --- Cu(In,Ga)Se2 --- mini-module --- numerical simulation --- P1 shunt --- space charge region (SCR) --- TCAD --- transistor effect --- electrodeposition --- CdTe film --- two-electrode configuration --- thin films --- electroplating temperature --- photovoltaic --- CdTe --- CdS --- luminescence --- spectroscopy --- CdSe --- CdTe1−xSex --- photovoltaics --- review --- tin monosulfide --- tin disulfide --- chemical solution process --- absorber --- buffer --- renewable energy --- ethlammonium --- formamidinium --- microstructure --- perovskite --- SnS/SnS2 --- CdS/CdTe --- CIGS --- silicon --- electroplating of semiconductors

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Semiconductor photocatalysts have attracted a great amount of multidiscipline research due to their high potential for solar-to-chemical-energy conversion applications, ranging from water and air purification to hydrogen and chemical fuel production. This unique diversity of photoinduced applications has spurred major research efforts on the rational design and development of photocatalytic materials with tailored structural, morphological, and optoelectronic properties in order to promote solar-light harvesting, easy photogenerated electron-hole recombination and the concomitant low quantum efficiency. This book presents a collection of original research articles on advanced photocatalytic materials, synthesized by novel fabrication approaches and/or innovative modifications that improve their performance in target photocatalytic applications such as water (cyanobacterial toxins, antibiotics, phenols, and dyes) and air (NOx and volatile organic compounds) pollutant degradation, hydrogen evolution, and hydrogen peroxide production by photoelectrochemical cells.

Technology: general issues --- anatase --- brookite --- C/N-TiO2 --- microcystin-LR --- photodegradation --- visible light --- TiO2 nanomaterials --- Au nanoparticles --- anodization --- photocatalytic degradation of antibiotics --- LC-MS/MS --- TiO2 --- photonic crystals --- graphene oxide nanocolloids --- reduced graphene oxide --- photocatalysis --- photocatalytic materials --- nanocomposites --- sulfate-modified BiVO4 --- methylene blue --- LED visible light --- photodecomposition --- anatase TiO2 nanocrystals --- high-energy facets --- photocatalytic activity --- photovoltaic performance --- photoactive cement --- TiO2/N --- NOx decomposition --- mechanical properties --- plasmonic photocatalysis --- silver-copper oxide --- VOCs remediation --- full-spectrum photoresponse --- carbon-doped titania --- carbon-modified titania --- graphene/titania --- vis-active photocatalyst --- antibacterial properties --- laser pyrolysis --- hydrogen peroxide --- CdS --- CdSe --- photoelectrocatalysis --- photocatalytic fuel cells --- photo fuel cells --- visible light activated titania --- heterojunction photocatalysts --- photonic crystal catalysts --- graphene-based photocatalysts --- water and air purification --- solar fuels --- anatase --- brookite --- C/N-TiO2 --- microcystin-LR --- photodegradation --- visible light --- TiO2 nanomaterials --- Au nanoparticles --- anodization --- photocatalytic degradation of antibiotics --- LC-MS/MS --- TiO2 --- photonic crystals --- graphene oxide nanocolloids --- reduced graphene oxide --- photocatalysis --- photocatalytic materials --- nanocomposites --- sulfate-modified BiVO4 --- methylene blue --- LED visible light --- photodecomposition --- anatase TiO2 nanocrystals --- high-energy facets --- photocatalytic activity --- photovoltaic performance --- photoactive cement --- TiO2/N --- NOx decomposition --- mechanical properties --- plasmonic photocatalysis --- silver-copper oxide --- VOCs remediation --- full-spectrum photoresponse --- carbon-doped titania --- carbon-modified titania --- graphene/titania --- vis-active photocatalyst --- antibacterial properties --- laser pyrolysis --- hydrogen peroxide --- CdS --- CdSe --- photoelectrocatalysis --- photocatalytic fuel cells --- photo fuel cells --- visible light activated titania --- heterojunction photocatalysts --- photonic crystal catalysts --- graphene-based photocatalysts --- water and air purification --- solar fuels

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Semiconductor photocatalysts have attracted a great amount of multidiscipline research due to their high potential for solar-to-chemical-energy conversion applications, ranging from water and air purification to hydrogen and chemical fuel production. This unique diversity of photoinduced applications has spurred major research efforts on the rational design and development of photocatalytic materials with tailored structural, morphological, and optoelectronic properties in order to promote solar-light harvesting, easy photogenerated electron-hole recombination and the concomitant low quantum efficiency. This book presents a collection of original research articles on advanced photocatalytic materials, synthesized by novel fabrication approaches and/or innovative modifications that improve their performance in target photocatalytic applications such as water (cyanobacterial toxins, antibiotics, phenols, and dyes) and air (NOx and volatile organic compounds) pollutant degradation, hydrogen evolution, and hydrogen peroxide production by photoelectrochemical cells.

anatase --- brookite --- C/N-TiO2 --- microcystin-LR --- photodegradation --- visible light --- TiO2 nanomaterials --- Au nanoparticles --- anodization --- photocatalytic degradation of antibiotics --- LC-MS/MS --- TiO2 --- photonic crystals --- graphene oxide nanocolloids --- reduced graphene oxide --- photocatalysis --- photocatalytic materials --- nanocomposites --- sulfate-modified BiVO4 --- methylene blue --- LED visible light --- photodecomposition --- anatase TiO2 nanocrystals --- high-energy facets --- photocatalytic activity --- photovoltaic performance --- photoactive cement --- TiO2/N --- NOx decomposition --- mechanical properties --- plasmonic photocatalysis --- silver-copper oxide --- VOCs remediation --- full-spectrum photoresponse --- carbon-doped titania --- carbon-modified titania --- graphene/titania --- vis-active photocatalyst --- antibacterial properties --- laser pyrolysis --- hydrogen peroxide --- CdS --- CdSe --- photoelectrocatalysis --- photocatalytic fuel cells --- photo fuel cells --- visible light activated titania --- heterojunction photocatalysts --- photonic crystal catalysts --- graphene-based photocatalysts --- water and air purification --- solar fuels