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View article: Novel ambipolar polymers for detection beyond 1000 nm with organic phototransistors
Novel ambipolar polymers for detection beyond 1000 nm with organic phototransistors Open
Fine-tuning the TQ-based polymer structure yields balanced charge transport, enabling simple integrated circuits. Due to their extended NIR-II absorption, high-performing NIR organic phototransistors were developed.
View article: Exploring the Influence of Carbonaceous Material on the Photocatalytic Performance of the Composites Containing Bi–BiOBr and P25 TiO<sub>2</sub> for NO<sub>x</sub> Remediation
Exploring the Influence of Carbonaceous Material on the Photocatalytic Performance of the Composites Containing Bi–BiOBr and P25 TiO<sub>2</sub> for NO<sub>x</sub> Remediation Open
The Bi–BiOBr–P25 TiO 2 composite material exhibits high and synergistic improvements in the photocatalytic activity for nitrogen oxides (NO x = NO + NO 2 ) removal. Herein, the influence of adding carbonaceous material to this composite, n…
View article: Preparation of Thermally and Photochemically Immobilized N‐type Conjugated Polymer Films via Quantitative Backbone Editing
Preparation of Thermally and Photochemically Immobilized N‐type Conjugated Polymer Films via Quantitative Backbone Editing Open
We report a series of n‐type conjugated polymers based on PNDI‐TfBTT and PNDIV‐TfBTT backbones constructed from electron‐deficient naphthalene diimide (NDI) and fluorinated benzothiadiazole (fBT) units, with PNDIV‐TfBTT incorporating a vin…
View article: Preparation of Thermally and Photochemically Immobilized N‐type Conjugated Polymer Films via Quantitative Backbone Editing
Preparation of Thermally and Photochemically Immobilized N‐type Conjugated Polymer Films via Quantitative Backbone Editing Open
We report a series of n‐type conjugated polymers based on PNDI‐TfBTT and PNDIV‐TfBTT backbones constructed from electron‐deficient naphthalene diimide (NDI) and fluorinated benzothiadiazole (fBT) units, with PNDIV‐TfBTT incorporating a vin…
View article: Purifying the Air with Photocatalysis: Developing Bismuth Oxybromide/ Copper Phthalocyanine Composite Photocatalyst Filters with Enhanced Activity for NO<sub>x</sub> Removal
Purifying the Air with Photocatalysis: Developing Bismuth Oxybromide/ Copper Phthalocyanine Composite Photocatalyst Filters with Enhanced Activity for NO<sub>x</sub> Removal Open
The utilization of photocatalysis is a promising new strategy for reducing the substantially high levels of nitrogen oxides (NO x ) pollution in cities. In this work, we examine bismuth oxybromide (BiOBr) as a viable substitute due to its …
View article: Discerning Blend Microstructure and Charge Recombination for Stable Biorenewable‐Based Organic Photovoltaics
Discerning Blend Microstructure and Charge Recombination for Stable Biorenewable‐Based Organic Photovoltaics Open
The power conversion efficiency of organic photovoltaics (OPV) has recently surpassed 20%. However, the degradation mechanisms affecting blends based on these materials require urgent attention to improve the stability of such devices towa…
View article: The Influence of Alkyl Spacers and Molecular Weight on the Charge Transport and Storage Properties of Oxy‐Bithiophene‐Based Conjugated Polymers
The Influence of Alkyl Spacers and Molecular Weight on the Charge Transport and Storage Properties of Oxy‐Bithiophene‐Based Conjugated Polymers Open
Conjugated polymers (CPs) with polar side chains can conduct electronic and ionic charges simultaneously, making them promising for bioelectronics, electrocatalysis and energy storage. Recent work showed that adding alkyl spacers between C…
View article: The Influence of Alkyl Spacers and Molecular Weight on the Charge Transport and Storage Properties of Oxy‐Bithiophene‐Based Conjugated Polymers
The Influence of Alkyl Spacers and Molecular Weight on the Charge Transport and Storage Properties of Oxy‐Bithiophene‐Based Conjugated Polymers Open
Conjugated polymers (CPs) with polar side chains can conduct electronic and ionic charges simultaneously, making them promising for bioelectronics, electrocatalysis and energy storage. Recent work showed that adding alkyl spacers between C…
View article: Structure–Property Relationships for the Electronic Applications of Bis-Adduct Isomers of Phenyl-C<sub>61</sub> Butyric Acid Methyl Ester
Structure–Property Relationships for the Electronic Applications of Bis-Adduct Isomers of Phenyl-C<sub>61</sub> Butyric Acid Methyl Ester Open
Higher adducts of a fullerene, such as the bis-adduct of PCBM (bis-PCBM), can be used to achieve shallower molecular orbital energy levels than, for example, PCBM or C60. Substituting the bis-adduct for the parent fullerene is useful to in…
View article: Charge-Transfer State Dissociation Efficiency Can Limit Free Charge Generation in Low-Offset Organic Solar Cells
Charge-Transfer State Dissociation Efficiency Can Limit Free Charge Generation in Low-Offset Organic Solar Cells Open
We investigate the charge-generation processes limiting the performance of low-offset organic bulk-heterojunction solar cells by studying a series of newly synthesized PBDB-T-derivative donor polymers whose ionisation energy (IE) is tuned …
View article: Biorenewable Solvents for High-Performance Organic Solar Cells
Biorenewable Solvents for High-Performance Organic Solar Cells Open
With the advent of nonfullerene acceptors (NFAs), organic photovoltaic (OPV) devices are now achieving high enough power conversion efficiencies (PCEs) for commercialization. However, these high performances rely on active layers processed…
View article: Low Dark Current Organic Photodetectors Utilizing Highly Cyanated Non-fullerene Acceptors
Low Dark Current Organic Photodetectors Utilizing Highly Cyanated Non-fullerene Acceptors Open
Organic materials combining high electron affinity with strong absorption in the visible spectrum are of interest for photodetector applications. In this study, we report two such molecular semiconductors, based upon an acceptor-donor-acce…
View article: Identifying structure-absorption relationships and predicting absorption strength of non-fullerene acceptors for organic photovoltaics
Identifying structure-absorption relationships and predicting absorption strength of non-fullerene acceptors for organic photovoltaics Open
Non-fullerene acceptors (NFAs) are excellent light harvesters, yet the origin of such high optical extinction is not well understood. In this work, we investigate the absorption strength of NFAs by building a database of time-dependent den…
View article: Identifying structure–absorption relationships and predicting absorption strength of non-fullerene acceptors for organic photovoltaics
Identifying structure–absorption relationships and predicting absorption strength of non-fullerene acceptors for organic photovoltaics Open
We combine experiments with density functional theory calculations, statistical analysis, and machine-learning to reveal the structure–absorption strength relationship and predict the absorption strength of organic non-fullerene acceptors.
View article: Relationship between molecular properties and degradation mechanisms of organic solar cells based on bis-adducts of phenyl-C<sub>61</sub>butyric acid methyl ester
Relationship between molecular properties and degradation mechanisms of organic solar cells based on bis-adducts of phenyl-C<sub>61</sub>butyric acid methyl ester Open
Change of the side chain position of bis-PCBM can modulate the molecular parameters and further serve as a strategy to control the stability of organic solar cells.
View article: Reconciling models of interfacial state kinetics and device performance in organic solar cells: impact of the energy offsets on the power conversion efficiency
Reconciling models of interfacial state kinetics and device performance in organic solar cells: impact of the energy offsets on the power conversion efficiency Open
We present a new framework to study organic photovoltaic devices in which a model that integrates device physics with excited state dynamics is applied to explain transient and steady-state spectroscopic and optoelectronic measurements.
View article: Emissive Charge‐Transfer States at Hybrid Inorganic/Organic Heterojunctions Enable Low Non‐Radiative Recombination and High‐Performance Photodetectors
Emissive Charge‐Transfer States at Hybrid Inorganic/Organic Heterojunctions Enable Low Non‐Radiative Recombination and High‐Performance Photodetectors Open
Hybrid devices based on a heterojunction between inorganic and organic semiconductors have offered a means to combine the advantages of both classes of materials in optoelectronic devices, but, in practice, the performance of such devices …
View article: Influence of Backbone Curvature on the Organic Electrochemical Transistor Performance of Glycolated Donor–Acceptor Conjugated Polymers
Influence of Backbone Curvature on the Organic Electrochemical Transistor Performance of Glycolated Donor–Acceptor Conjugated Polymers Open
Two new glycolated semiconducting polymers PgBT(F)2gT and PgBT(F)2gTT of differing backbone curvatures were designed and synthesised for application as p‐type accumulation mode organic electrochemical transistor (OECT) materials. Both poly…
View article: Correlating the Phase Behavior with the Device Performance in Binary Poly-3-hexylthiophene: Nonfullerene Acceptor Blend Using Optical Probes of the Microstructure
Correlating the Phase Behavior with the Device Performance in Binary Poly-3-hexylthiophene: Nonfullerene Acceptor Blend Using Optical Probes of the Microstructure Open
The performance of photovoltaic devices based on blends of conjugated polymers with nonfullerene acceptors depends on the phase behavior and microstructure of the binary, which in turn depends on the chemical structures of the molecular co…
View article: Overcoming the Limitations of Transient Photovoltage Measurements for Studying Recombination in Organic Solar Cells
Overcoming the Limitations of Transient Photovoltage Measurements for Studying Recombination in Organic Solar Cells Open
Transient photovoltage (TPV) measurements are frequently used to study recombination processes in thin‐film solar cells by probing the decay of a small optically induced voltage perturbation to infer the charge carrier dynamics of devices …
View article: Ring fusion in tetrathienylethene cored perylene diimide tetramers affords acceptors with strong and broad absorption in the near-UV to visible region
Ring fusion in tetrathienylethene cored perylene diimide tetramers affords acceptors with strong and broad absorption in the near-UV to visible region Open
Two PDI tetramers with a central tetrathienylethene core were investigated as non-fullerene acceptors in organic photovoltaics and the dramatic differences in their optical absorption spectra were rationalised on the basis of DFT calculati…
View article: Hybridization of Local Exciton and Charge-Transfer States Reduces Nonradiative Voltage Losses in Organic Solar Cells
Hybridization of Local Exciton and Charge-Transfer States Reduces Nonradiative Voltage Losses in Organic Solar Cells Open
A number\nof recent studies have shown that the nonradiative voltage\nlosses in organic solar cells can be suppressed in systems with low\nenergetic offsets between donor and acceptor molecular states, but\nthe physical reasons underpinnin…