AI Article Synopsis
- The study explores the use of Lewis-paired complexes, specifically B(CF) (BCF) and FTCNQ, as advanced dopants for organic semiconductors to overcome issues like low electrical conductivity and thermal stability.
- These new dopants significantly improve the performance of poly(3-hexylthiophene) (P3HT), achieving conductivities over 300 S cm in isotropic films, and show a dramatic increase in thermoelectric power factor compared to traditional dopants.
- Additionally, BCF:FTCNQ-doped P3HT demonstrates enhanced thermal stability and dedoping activation energy, making it at least 10 times more stable than conventional dopants.
Article Abstract
Chemical doping of organic semiconductors is an essential enabler for applications in electronic and energy-conversion devices such as thermoelectrics. Here, Lewis-paired complexes are advanced as high-performance dopants that address all the principal drawbacks of conventional dopants in terms of limited electrical conductivity, thermal stability, and generality. The study focuses on the Lewis acid B(CF) (BCF) and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (FTCNQ) bearing Lewis-basic -CN groups. Due to its high electron affinity, BCF:FTCNQ dopes an exceptionally wide range of organic semiconductors, over 20 of which are investigated. Complex activation and microstructure control lead to conductivities for poly(3-hexylthiophene) (P3HT) exceeding 300 and 900 S cm for isotropic and chain-oriented films, respectively, resulting in a 10 to 50 times larger thermoelectric power factor compared to those obtained with neat dopants. Moreover, BCF:FTCNQ-doped P3HT exhibits a 3-fold higher thermal dedoping activation energy compared to that obtained with neat dopants and at least a factor of 10 better operational stability.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11249766 | PMC |
| http://dx.doi.org/10.1021/acsenergylett.4c01278 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Fine-Modulation of Perovskite Ion-Additive Binding Interaction Using Multidentate Ligation for High Performance Perovskite Light-Emitting Diodes.
ACS Nano
December 2024
Department of Chemistry, Korea University, Seoul 02841, Republic of Korea.
Research on perovskite light-emitting diodes (PeLEDs) has primarily focused on modulating crystal growth to achieve smaller grain sizes and defect passivation using organic additives. However, challenges remain in controlling the intermolecular interactions between these organic additives and perovskite precursor ions for precise modulation of crystal growth. In this study, we synthesize two triphenylphosphine oxide (TPPO)-based multidentate additives: bidentate hexane-1,6-diyl-bis(oxy-4-triphenylphosphine oxide) (2-TPPO) and tetradentate pentaerythrityl-tetrakis(oxy-4-triphenylphosphine oxide) (4-TPPO).
View Article and Find Full Text PDFProbing Out-Of-Plane Charge Transport in Organic Semiconductors Using Conductive Atomic Force Microscopy.
Adv Mater
December 2024
Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
High contact resistance remains the primary obstacle that hinders further advancements of organic semiconductors (OSCs) in electronic circuits. While significant effort has been directed toward lowering the energy barrier at OSC/metal contact interfaces, approaches toward reducing another major contributor to overall contact resistance - the bulk resistance - have been limited to minimizing the thickness of OSC films. However, the out-of-plane conductivity of OSCs, a critical aspect of bulk resistance, has largely remained unaddressed.
View Article and Find Full Text PDFLight-Driven Hybrid Nanoreactor Harnessing the Synergy of Carboxysomes and Organic Frameworks for Efficient Hydrogen Production.
ACS Catal
December 2024
Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, U.K.
Synthetic photobiocatalysts are promising catalysts for valuable chemical transformations by harnessing solar energy inspired by natural photosynthesis. However, the synergistic integration of all of the components for efficient light harvesting, cascade electron transfer, and efficient biocatalytic reactions presents a formidable challenge. In particular, replicating intricate multiscale hierarchical assembly and functional segregation involved in natural photosystems, such as photosystems I and II, remains particularly demanding within artificial structures.
View Article and Find Full Text PDFMechanistic Analysis of Peptide Affinity to Single-Walled Carbon Nanotubes and Volatile Organic Compounds Using Chemiresistors.
ACS Appl Mater Interfaces
December 2024
Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson Air Force Base, Wright-Patterson AFB, Ohio 45433, United States.
Peptides, due to their diverse and controllable properties, are used as both liquid and gas phase recognition elements for both biological and chemical targets. While it is well understood how binding of a peptide to a biomolecule can be converted into a sensing event, there is not the same mechanistic level of understanding with regard to how peptides modulate the selectivity of semiconductor/conductor-based gas sensors. Notably, a rational, mechanistic study has not yet been performed to correlate peptide properties to the sensor response for volatile organic compounds (VOCs) as a function of chemical properties.
View Article and Find Full Text PDFOrganic Iono-Optoelectronics: From Electrochromics to Artificial Retina.
Acc Chem Res
December 2024
Tarpo Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States.
ConspectusOrganic mixed ionic electronic conductors (OMIECs) represent an exciting and emerging class of materials that have recently revitalized the field of organic semiconductors. OMIECs are particularly attractive because they allow both ionic and electronic transport while retaining the inherent benefits of organic semiconducting materials such as mechanical conformability and biocompatibility. These combined properties make the OMIECs ideal for applications in bioelectronics, energy storage, neuromorphic computing, and electrochemical transistors for sensing.
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!