Cost-effective, solution-processable organic photovoltaics (OPV) present an interesting alternative to inorganic silicon-based solar cells. However, one of the major remaining challenges of OPV devices is their lack of long-term operational stability, especially at elevated temperatures. The synthesis of a fullerene dumbbell and its use as an additive in the active layer of a PCDTBT:PCBM-based OPV device is reported. The addition of only 20 % of this novel fullerene not only leads to improved device efficiencies, but more importantly also to a dramatic increase in morphological stability under simulated operating conditions. Dynamic secondary ion mass spectrometry (DSIMS) and TEM are used, amongst other techniques, to elucidate the origins of the improved morphological stability.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4241035 | PMC |
| http://dx.doi.org/10.1002/anie.201407310 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Photoinduced ultrafast multielectron transfer and long-lived charge-accumulated state in a fullerene-indacenodithiophene dumbbell triad.
Proc Natl Acad Sci U S A
December 2024
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Article Synopsis
- Researchers developed a unique dumbbell-shaped molecule that facilitates ultrafast multielectron transfer (m-ET), which is essential for improving light-energy conversion.
- The m-ET in this system occurs 23 times faster than the more common single-electron transfer (s-ET) and has a significantly longer product lifetime (10 μs), which enhances its photocatalytic capabilities.
- This study showcases a new approach to achieving efficient m-ET in single molecules, offering potential advancements for applications in photocatalysis and molecular devices.
Theoretical Insight into Complexation Between Cyclocarbons and C Fullerene.
Chemistry
October 2024
Beijing Kein Research Center for Natural Sciences, Beijing, 100022, People's Republic of China.
This work conducts a comprehensive theoretical study on the non-covalent complexation between cyclocarbons and C fullerene for the first time. The binding energy between cyclocarbons and C fullerene is significantly stronger than that between two C or two C fullerenes, indicating a particularly strong affinity. The cyclocarbons and C fullerene can spontaneously assemble into complexes in the gas phase at room temperature, and the hydrophobic effect caused by the solvent environment can promote this binding.
View Article and Find Full Text PDFCovalently linked thieno[2,3-]thiophene-fullerene dimers: synthesis and physical characterization.
Org Biomol Chem
April 2024
Chemistry Department, Faculty of Science, University of Kuwait, P.O. Box 5969, Safat 13060, Kuwait.
Thienothiophene (TT) has received great attention in the fields of electronics and optoelectronics. Here we report a synthesis and characterization of fullerene-donor-fullerene triads linked to thieno[2,3-]thiophene as a donor. The photophysical and electrochemical properties of the new dumbbells were investigated using UV-vis spectroscopy, fluorescence spectroscopy, cyclic voltammetry, and square wave voltammetry.
View Article and Find Full Text PDFInterfullerene Electronic Interactions and Excited-State Dynamics in Fullerene Dumbbell Conjugates.
J Am Chem Soc
July 2023
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Several dumbbell conjugates featuring MN@-C (M = Sc, Y) and C were prepared to systematically investigate interfullerene electronic interactions and excited state dynamics. From electrochemical investigations, we concluded that the redox potentials of our MN@-C (M = Sc, Y) dumbbells depend largely on the interfullerene electronic interactions. Assisted by DFT calculation, the unique role of metal atoms was highlighted.
View Article and Find Full Text PDFSugar-Bridged Fullerene Dumbbells and Their Interaction with the [10]Cycloparaphenylene Nanoring.
Chemistry
August 2023
University of Belgrade, Faculty of Chemistry, Studentski trg 12-16, 11158, Belgrade, Serbia.
The synthesis and characterization of four dumbbell-shaped fullerene molecules connected by isosorbide and isomannide moieties is presented. Additionally, their electrochemical behavior and their ability to form complexes with [10]cycloparaphenylene ([10]CPP) were investigated. The cyclic voltammetry (CV) results of the fullerene dumbbells demonstrate a high electron affinity, indicating their strong interaction with electron-donating counterparts such as carbon nanorings, which possess complementary charge and shape properties.
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!