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Themed collection Global Energy Challenges: Solar Energy

52 items
Open Access Edge Article

Wide bandgap OPV polymers based on pyridinonedithiophene unit with efficiency >5%

We report the properties of a new series of wide band gap photovoltaic polymers based on the N-alkyl 2-pyridone dithiophene (PDT) unit.

Graphical abstract: Wide bandgap OPV polymers based on pyridinonedithiophene unit with efficiency >5%
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Metalloporphyrin-modified semiconductors for solar fuel production

A novel synthetic method is used to prepare metalloporphyrin-modified gallium phosphide photocathodes for solar-driven hydrogen evolution from water.

Graphical abstract: Metalloporphyrin-modified semiconductors for solar fuel production
From the themed collection: Global Energy Challenges: Hydrogen Energy
Open Access Edge Article

Ligand enhanced upconversion of near-infrared photons with nanocrystal light absorbers

Tetracene derivatives enhance near-infrared photon upconversion by maximizing energy transfer from PbS and PbSe nanocrystal light absorbers.

Graphical abstract: Ligand enhanced upconversion of near-infrared photons with nanocrystal light absorbers
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Structural engineering of porphyrin-based small molecules as donors for efficient organic solar cells

Three A–D–A porphyrin-based small molecules are employed as donors in bulky heterojunction organic solar cells. Striking a delicate balance between solubility, morphology and device fabrication, leads to PCEs of up to 7.7%.

Graphical abstract: Structural engineering of porphyrin-based small molecules as donors for efficient organic solar cells
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Effects of heteroatom substitution in spiro-bifluorene hole transport materials

By introducing the heteroatom into the benchmark hole transport material Spiro-MeOTAD, the energy level of hole transport materials can be tuned.

Graphical abstract: Effects of heteroatom substitution in spiro-bifluorene hole transport materials
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Donor–π–donor type hole transporting materials: marked π-bridge effects on optoelectronic properties, solid-state structure, and perovskite solar cell efficiency

Donor–π-bridge–donor type oligomers (D–π–D) have been studied intensively as active materials for organic optoelectronic devices.

Graphical abstract: Donor–π–donor type hole transporting materials: marked π-bridge effects on optoelectronic properties, solid-state structure, and perovskite solar cell efficiency
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Quasi-type II CuInS2/CdS core/shell quantum dots

Both single and multiple exciton lifetimes are significantly extended in quasi-type II CuInS2/CdS core/shell QDs.

Graphical abstract: Quasi-type II CuInS2/CdS core/shell quantum dots
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Tethered tertiary amines as solid-state n-type dopants for solution-processable organic semiconductors

Tertiary amines covalently tethered to electron-deficient aromatic molecules by alkyl spacers enable solid-state n-doping.

Graphical abstract: Tethered tertiary amines as solid-state n-type dopants for solution-processable organic semiconductors
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Surface engineering to achieve organic ternary memory with a high device yield and improved performance

Organic memories fabricated on surface-engineered indium tin oxide show the highest ternary yield (82%) to date and better performance.

Graphical abstract: Surface engineering to achieve organic ternary memory with a high device yield and improved performance
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Unveiling iodine-based electrolytes chemistry in aqueous dye-sensitized solar cells

The chemistry behind the I/I3 redox couple is thoroughly investigated in 100% aqueous dye-sensitized solar cells, paving the way to this emerging green PV technology.

Graphical abstract: Unveiling iodine-based electrolytes chemistry in aqueous dye-sensitized solar cells
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Methyl viologen-templated zinc gallophosphate zeolitic material with dual photo-/thermochromism and tuneable photovoltaic activity

The first zeolitic material templated by MV2+ cations exhibits dual photo-/thermochromism with ultralong-lived charge separation and high thermal stability, as well as tuneable photovoltaic activity.

Graphical abstract: Methyl viologen-templated zinc gallophosphate zeolitic material with dual photo-/thermochromism and tuneable photovoltaic activity
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Effect of multi-armed triphenylamine-based hole transporting materials for high performance perovskite solar cells

The performance of planar perovskite solar cells was enhanced by using hole transporting materials containing triphenylamine groups with a multi-armed structure.

Graphical abstract: Effect of multi-armed triphenylamine-based hole transporting materials for high performance perovskite solar cells
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

A “roller-wheel” Pt-containing small molecule that outperforms its polymer analogs in organic solar cells

“Roller-wheel” shaped Pt-containing molecules display enhanced crystallinity and are better performing organic solar cell materials than conventional small molecules and polymers featuring “dumbbell” shaped structures.

Graphical abstract: A “roller-wheel” Pt-containing small molecule that outperforms its polymer analogs in organic solar cells
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Spatial separation of oxidation and reduction co-catalysts for efficient charge separation: Pt@TiO2@MnOx hollow spheres for photocatalytic reactions

The design and synthesis of fine Pt@TiO2@MnOx hollow spheres is described. Pt and MnOx are spatially separated by TiO2 shells. The catalyst exhibits high efficiency of charge-separation and surface-reaction.

Graphical abstract: Spatial separation of oxidation and reduction co-catalysts for efficient charge separation: Pt@TiO2@MnOx hollow spheres for photocatalytic reactions
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Ultrafast exciton quenching by energy and electron transfer in colloidal CdSe nanosheet–Pt heterostructures

Large in-plane exciton mobility in CdSe nanosheets leads to ultrafast exciton quenching by energy transfer to Pt.

Graphical abstract: Ultrafast exciton quenching by energy and electron transfer in colloidal CdSe nanosheet–Pt heterostructures
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Water splitting with polyoxometalate-treated photoanodes: enhancing performance through sensitizer design

Improved sensitizer design dramatically enhances visible light-driven water oxidation from dye-sensitized TiO2 photoanodes treated with polyoxometalate water oxidation catalyst [{Ru4O4(OH)2(H2O)4}(γ-SiW10O36)2]10−.

Graphical abstract: Water splitting with polyoxometalate-treated photoanodes: enhancing performance through sensitizer design
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

On the application of the tolerance factor to inorganic and hybrid halide perovskites: a revised system

Can new hybrid perovskites be predicted using the tolerance factor?

Graphical abstract: On the application of the tolerance factor to inorganic and hybrid halide perovskites: a revised system
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Photodriven hydrogen evolution by molecular catalysts using Al2O3-protected perylene-3,4-dicarboximide on NiO electrodes

Photodriven charge transfer dynamics are described for an atomic layer deposition-stabilized, organic dye-sensitized photocathode architecture that produces hydrogen.

Graphical abstract: Photodriven hydrogen evolution by molecular catalysts using Al2O3-protected perylene-3,4-dicarboximide on NiO electrodes
Open Access Edge Article

Donor–acceptor–acceptor (D–A–A) type 1,8-naphthalimides as non-fullerene small molecule acceptors for bulk heterojunction solar cells

Donor–acceptor–acceptor (D–A–A) type 1,8-naphthalimide based small molecules SM1 and SM2 functionalized with tetracyanobutadiene (TCBD) and dicyanoquino-dimethane (DCNQ) modules, showing strong absorption in the visible and near-infrared (NIR) region are reported.

Graphical abstract: Donor–acceptor–acceptor (D–A–A) type 1,8-naphthalimides as non-fullerene small molecule acceptors for bulk heterojunction solar cells
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Indolo[3,2-b]indole-based crystalline hole-transporting material for highly efficient perovskite solar cells

A fluorinated indolo[3,2-b]indole (IDID) derivative is prepared as a crystalline hole transporting material for perovskite solar cells. A fluorinated IDID backbone enables a tight molecular stacking by π–π interaction. The device fabricated using IDIDF exhibits a PCE of 19%.

Graphical abstract: Indolo[3,2-b]indole-based crystalline hole-transporting material for highly efficient perovskite solar cells
Open Access Edge Article

Understanding and removing surface states limiting charge transport in TiO2 nanowire arrays for enhanced optoelectronic device performance

An effective wet-chemistry approach is demonstrated to minimize the trap states that limit electron transport in rutile TiO2 nanowire arrays, this leads to an over 20-fold enhancement in the electron diffusion coefficient.

Graphical abstract: Understanding and removing surface states limiting charge transport in TiO2 nanowire arrays for enhanced optoelectronic device performance
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Visible light-driven water oxidation using a covalently-linked molecular catalyst–sensitizer dyad assembled on a TiO2 electrode

The combination of porphyrin as a sensitizer and a ruthenium complex as a water oxidation catalyst (WOC) is promising to exploit highly efficient molecular artificial photosynthetic systems.

Graphical abstract: Visible light-driven water oxidation using a covalently-linked molecular catalyst–sensitizer dyad assembled on a TiO2 electrode
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Photoelectrochemical hydrogen production in water using a layer-by-layer assembly of a Ru dye and Ni catalyst on NiO

Layer-by-layer assembly of a Ru dye and Ni catalyst on a p-type NiO photocathode enables photoelectrochemical H2 generation in water.

Graphical abstract: Photoelectrochemical hydrogen production in water using a layer-by-layer assembly of a Ru dye and Ni catalyst on NiO
Open Access Edge Article

Photothermal-enhanced catalysis in core–shell plasmonic hierarchical Cu7S4 microsphere@zeolitic imidazole framework-8

A strategy to improve reaction activity via the photothermal effect of plasmonic semiconductor nanomaterials is demonstrated in a core–shell structured catalyst.

Graphical abstract: Photothermal-enhanced catalysis in core–shell plasmonic hierarchical Cu7S4 microsphere@zeolitic imidazole framework-8
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Reversible photo-induced trap formation in mixed-halide hybrid perovskites for photovoltaics

A reversible photo-induced instability has been found in mixed-halide photovoltaic perovskites that limits the open circuit voltage in solar cells.

Graphical abstract: Reversible photo-induced trap formation in mixed-halide hybrid perovskites for photovoltaics
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Understanding the origin of photoelectrode performance enhancement by probing surface kinetics

Probing the surface kinetics of different hematite electrodes with and without surface passivations.

Graphical abstract: Understanding the origin of photoelectrode performance enhancement by probing surface kinetics
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Unprecedentedly targeted customization of molecular energy levels with auxiliary-groups in organic solar cell sensitizers

Lowering the LUMOs and decreasing energy “waste” is targeted through inserting an auxiliary group from an electron donor or acceptor into D–π–A organic sensitizers, and the photovoltaic efficiency increases 38 fold from 0.24 to 9.46%.

Graphical abstract: Unprecedentedly targeted customization of molecular energy levels with auxiliary-groups in organic solar cell sensitizers
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Precious-metal free photoelectrochemical water splitting with immobilised molecular Ni and Fe redox catalysts

Splitting water into hydrogen and oxygen with 3d transition metal molecular catalysts and light has been accomplished.

Graphical abstract: Precious-metal free photoelectrochemical water splitting with immobilised molecular Ni and Fe redox catalysts
Open Access Edge Article

Understanding the anatase–rutile phase junction in charge separation and transfer in a TiO2 electrode for photoelectrochemical water splitting

The key to phase junctions for efficient charge separation is to consider both the phase alignment and interface structure.

Graphical abstract: Understanding the anatase–rutile phase junction in charge separation and transfer in a TiO2 electrode for photoelectrochemical water splitting
Open Access Edge Article

High conductivity Ag-based metal organic complexes as dopant-free hole-transport materials for perovskite solar cells with high fill factors

Two Ag-based metal organic complexes (HA1 and HA2) are employed as a new class of dopant-free HTMs for the application in PSCs. The cell based on HA1 achieved high PCE of 11.98% under air conditions, which is comparable to the PCE of the cell employing the doped spiro-MeOTAD (12.27%) under the same conditions.

Graphical abstract: High conductivity Ag-based metal organic complexes as dopant-free hole-transport materials for perovskite solar cells with high fill factors
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Dithieno[3,2-b:2′,3′-d]pyridin-5(4H)-one based D–A type copolymers with wide bandgaps of up to 2.05 eV to achieve solar cell efficiencies of up to 7.33%

A PCE of 7.33% was achieved in a PSC based on a new copolymer, PDTPO-IDT, with bandgaps of up to 2.05 eV.

Graphical abstract: Dithieno[3,2-b:2′,3′-d]pyridin-5(4H)-one based D–A type copolymers with wide bandgaps of up to 2.05 eV to achieve solar cell efficiencies of up to 7.33%
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Tantalum nitride films integrated with transparent conductive oxide substrates via atomic layer deposition for photoelectrochemical water splitting

The first example of tantalum nitride electrodes on transparent conductive oxide substrates, which enables solar water splitting, is presented.

Graphical abstract: Tantalum nitride films integrated with transparent conductive oxide substrates via atomic layer deposition for photoelectrochemical water splitting
Open Access Edge Article

Oxygen deficient α-Fe2O3 photoelectrodes: a balance between enhanced electrical properties and trap-mediated losses

Intrinsic doping of hematite through the inclusion of oxygen vacancies (VO) is being increasingly explored as a simple, low temperature route to preparing active water splitting α-Fe2O3−x photoelectrodes.

Graphical abstract: Oxygen deficient α-Fe2O3 photoelectrodes: a balance between enhanced electrical properties and trap-mediated losses
Open Access Edge Article

Stable α/δ phase junction of formamidinium lead iodide perovskites for enhanced near-infrared emission

A stable α/δ phase junction of formamidinium lead iodide perovskites was realized via controllable precursors at a low annealing temperature for enhanced near-infrared emission.

Graphical abstract: Stable α/δ phase junction of formamidinium lead iodide perovskites for enhanced near-infrared emission
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Ring-fusion as a perylenediimide dimer design concept for high-performance non-fullerene organic photovoltaic acceptors

A series of perylenediimide (PDI) dimers are evaluated as acceptors for organic photovoltaic (OPV) cells.

Graphical abstract: Ring-fusion as a perylenediimide dimer design concept for high-performance non-fullerene organic photovoltaic acceptors
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Enhancement of charge transport properties of small molecule semiconductors by controlling fluorine substitution and effects on photovoltaic properties of organic solar cells and perovskite solar cells

Effects of fluorine substitution of small molecular semiconductor on charge transport and photovoltaic properties are systematically studied.

Graphical abstract: Enhancement of charge transport properties of small molecule semiconductors by controlling fluorine substitution and effects on photovoltaic properties of organic solar cells and perovskite solar cells
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Solar-microbial hybrid device based on oxygen-deficient niobium pentoxide anodes for sustainable hydrogen production

A new solar-microbial hybrid device based on oxygen-deficient Nb2O5 anodes for sustainable hydrogen generation without external bias was demonstrated.

Graphical abstract: Solar-microbial hybrid device based on oxygen-deficient niobium pentoxide anodes for sustainable hydrogen production
From the themed collection: Global Energy Challenges: Hydrogen Energy
Open Access Edge Article

A polymer acceptor with an optimal LUMO energy level for all-polymer solar cells

A new polymer acceptor based on the BNBP unit with an optimal LUMO energy level has been developed. The resulting all-polymer solar cells show high PCEs, remarkably high Voc values and small photon energy losses.

Graphical abstract: A polymer acceptor with an optimal LUMO energy level for all-polymer solar cells
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Enhancement of dye regeneration kinetics in dichromophoric porphyrin–carbazole triphenylamine dyes influenced by more exposed radical cation orbitals

Dye regeneration kinetics is enhanced by five times in a di-chromophoric porphyrin dye by attaching tridimensionally enlarged electron donor moieties.

Graphical abstract: Enhancement of dye regeneration kinetics in dichromophoric porphyrin–carbazole triphenylamine dyes influenced by more exposed radical cation orbitals
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Achievement of visible-light-driven Z-scheme overall water splitting using barium-modified Ta3N5 as a H2-evolving photocatalyst

Barium-modified Ta3N5 for the promotion of proton reduction is first employed as a H2-evolving photocatalyst for visible-light-driven Z-scheme overall water splitting.

Graphical abstract: Achievement of visible-light-driven Z-scheme overall water splitting using barium-modified Ta3N5 as a H2-evolving photocatalyst
Open Access Edge Article

Regioisomer effects of [70]fullerene mono-adduct acceptors in bulk heterojunction polymer solar cells

Regioisomer separations of [70]fullerene mono-adducts for polymer solar cell (PSC) applications were conducted for the first time.

Graphical abstract: Regioisomer effects of [70]fullerene mono-adduct acceptors in bulk heterojunction polymer solar cells
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

On thermodynamic inconsistencies in several photosynthetic and solar cell models and how to fix them

We analyze standard theoretical models of solar energy conversion developed to study solar cells and photosynthetic systems.

Graphical abstract: On thermodynamic inconsistencies in several photosynthetic and solar cell models and how to fix them
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Ruthenium(II)-polypyridyl zirconium(IV) metal–organic frameworks as a new class of sensitized solar cells

Ruthenium(II) polypyridyl-doped metal–organic framework sensitized films on TiO2 for photovoltaics reveal that the preparative method of dye doping/incorporation into the MOF is integral to the total solar cell efficiency.

Graphical abstract: Ruthenium(ii)-polypyridyl zirconium(iv) metal–organic frameworks as a new class of sensitized solar cells
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Gradient doping of phosphorus in Fe2O3 nanoarray photoanodes for enhanced charge separation

Highly-oriented Fe2O3 nanoarrays with a gradient phosphorus concentration result in enhanced charge separation in the bulk for photoelectrochemical water oxidation.

Graphical abstract: Gradient doping of phosphorus in Fe2O3 nanoarray photoanodes for enhanced charge separation
From the themed collection: Global Energy Challenges: Hydrogen Energy
Open Access Edge Article

Design of two-photon molecular tandem architectures for solar cells by ab initio theory

We present new two-photon molecular architectures for photovoltaics where atomic precision can be obtained by synthetic chemistry.

Graphical abstract: Design of two-photon molecular tandem architectures for solar cells by ab initio theory
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Synthetically tuneable biomimetic artificial photosynthetic reaction centres that closely resemble the natural system in purple bacteria

Synthetically flexible, rigid, tetrad molecules are shown to closely mimic structural and photochemical properties of the bacterial photosynthetic reaction centre.

Graphical abstract: Synthetically tuneable biomimetic artificial photosynthetic reaction centres that closely resemble the natural system in purple bacteria
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Long-lived charge carrier generation in ordered films of a covalent perylenediimide–diketopyrrolopyrrole–perylenediimide molecule

Self-ordering of covalent electron donor–acceptor building blocks in thin films upon solvent vapor annealing results in a 104 increase in photo-generated charge carrier lifetime.

Graphical abstract: Long-lived charge carrier generation in ordered films of a covalent perylenediimide–diketopyrrolopyrrole–perylenediimide molecule
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Tunable and highly efficient light-harvesting antenna systems based on 1,7-perylene-3,4,9,10-tetracarboxylic acid derivatives

Efficient harvesting of solar energy, without interference from electron transfer, is reported for a series of bichromophoric light-harvesting antenna molecules.

Graphical abstract: Tunable and highly efficient light-harvesting antenna systems based on 1,7-perylene-3,4,9,10-tetracarboxylic acid derivatives
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Vibrational properties and bonding nature of Sb2Se3 and their implications for chalcogenide materials

There is more to chemical bonding in chalcogenides than the shortest, strongest bonds, as revealed by microscopic quantum-chemical descriptors.

Graphical abstract: Vibrational properties and bonding nature of Sb2Se3 and their implications for chalcogenide materials
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Increased upconversion performance for thin film solar cells: a trimolecular composition

A dual-emitter upconvertor is applied to thin-film solar cells for the first time, generating record figures of merit.

Graphical abstract: Increased upconversion performance for thin film solar cells: a trimolecular composition
From the themed collection: Global Energy Challenges: Solar Energy
Open Access Edge Article

Molecular engineering and sequential cosensitization for preventing the “trade-off” effect with photovoltaic enhancement

Cosensitization of two dyes with different molecular sizes and photovoltaic characteristics is demonstrated to successfully prevent the “trade-off” effect, leading to an excellent power-conversion efficiency of 10.09% under one-sun and 11.12% under 0.3 sun 4 irradiation.

Graphical abstract: Molecular engineering and sequential cosensitization for preventing the “trade-off” effect with photovoltaic enhancement
From the themed collection: In celebration of Chinese New Year
Open Access Edge Article

Insight into the charge transfer in particulate Ta3N5 photoanode with high photoelectrochemical performance

Charge transfer has been demonstrated to have a fundamental role in particulate Ta3N5 electrode for achieving high efficient photoelectrochemical water oxidation.

Graphical abstract: Insight into the charge transfer in particulate Ta3N5 photoanode with high photoelectrochemical performance
From the themed collection: Global Energy Challenges: Solar Energy
52 items

About this collection

We are delighted to present an online collection showcasing recently published articles in the field of energy. To address major issues facing our planet, researchers all over the world have increasingly focused their efforts on finding solutions to these energy challenges. These articles highlight some of the excellent work that tackles important global challenges related to energy. We hope you enjoy reading this collection!

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