Copper tetra-(octyl-alkoxy-carbonyl)-phthalocyanine (CuPc-C8) and 3,4,9,10-tetra-(octyl-alkoxy-carbonyl)-perylene (Pery-C8) attached with long alkyl chains by covalent bonds were synthesized. Both of the two compounds showed good solubility in organic solvents, and the compatibility between them was improved. The novel composite of CuPc-C8/Pery-C8 was prepared by the solution-blending method. Atomic force microscopy (AFM) demonstrated the formation of the bulk heterojunction structure in their cast-coated films. Enhanced photosensitivity was observed in the photoreceptor made from the CuPc-C8/Pery-C8 composite, which was interpreted in terms of the large interfacial area between the two components due to the existence of the bulk heterojunction structure.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/jp050391+ | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nanostructure engineering for ferroelectric photovoltaics.
Nanoscale
January 2025
Research School of Chemistry, The Australian National University, Canberra, ACT 2601, Australia.
Ferroelectric photovoltaics have attracted increasing attention since their discovery in the 1970s, due to their above-bandgap photovoltage and polarized-light-dependent photocurrent. However, their practical applications have been limited by their weak visible light absorption and low photoconductivity. Intrinsic modification of the material, such as bandgap tuning through chemical doping, has proven effective, but usually leads to the degradation of ferroelectricity.
View Article and Find Full Text PDFFluoroalkylated Non-fullerene Acceptor as Surface Segregated Monolayer for Controlling Molecular Orientation of Acceptor Layer in Organic Photovoltaics.
ACS Appl Mater Interfaces
January 2025
RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
A fluoroalkyl-containing electron acceptor (Y-SSM) is designed and synthesized to control the orientation of the benchmark non-fullerene acceptor Y6 in thin films. Due to the low surface energy of the two fluoroalkyl chains at the terminal part of Y-SSM, it spontaneously segregates to the film surface during spin coating, forming a monolayer of edge-on oriented Y-SSM. The Y-SSM monolayer leads to crystallization of the underlying Y6 to induce a standing-up orientation in the bulk of the films, which is strikingly different from pure Y6 films that tend to be a face-on orientation.
View Article and Find Full Text PDFEffects of Additional Flexible and Rigid Structure on BDT-BDD Terpolymer and the Performance of Organic Solar Cells.
Polymers (Basel)
January 2025
School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China.
In organic solar cells, the aggregation and crystallization of polymers are significant for bulk heterojunction. Blending with acceptor materials, polymer donor materials can adjust their aggregation by the movement of the chain segments. In this paper, the unfused structures based on thiophene and carbazole are respectively designed and introduced into the donor-acceptor copolymer donor materials to investigate the influence of flexible and rigid structures on polymer-aggregation leading photoelectric performance.
View Article and Find Full Text PDFAchieving a Near-Infrared Absorption by A-DA'D-A Type Isoindigo-Based Small Molecular Acceptors for Organic Photovoltaics.
Molecules
January 2025
School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China.
Isoindigo (IID)-based non-fullerene acceptors, known for their broad absorption spectra and high charge carrier mobilities, play a crucial role in organic photovoltaics. In this study, two A-DA'D-A type unfused ring acceptors (URAs), IDC8CP-IC and IDC6CP-IC, were designed and synthesized using cyclopentadithiophene (CPDT) and IID core units, each functionalized with different alkyl chains (2-hexyldecyl and 2-octyldodecyl), through an atom- and step-efficient direct C-H arylation (DACH) method. Both URAs, despite the absence of non-covalent conformation locking between CPDT and IID, demonstrated favorable molecular planarity, broad absorption ranges, low band gaps, and high molar absorption coefficients.
View Article and Find Full Text PDFFunctionalized UiO-66 induces shallow electron traps in heterojunctions with InN for enhanced photocathodic water splitting.
J Colloid Interface Sci
January 2025
State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640 China; School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640 China. Electronic address:
Indium nitride (InN) exhibited significant potential as a photoelectrode material for photoelectrochemical (PEC) water splitting, attributed to its superior light absorption, high electron mobility, and direct bandgap. However, its practical application was constrained by rapid carrier recombination occurring within the bulk and at the surface. To address these limitations, researchers developed InN/UiO-66 heterojunction photoelectrodes, which markedly enhanced PEC water splitting for hydrogen production.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!