Cyclic Thiourea/Urea Functionalized Triphenylamine-Based Dyes for High-Performance Dye-Sensitized Solar Cells
摘要:
Six cyclic thiourea/urea functionalized triphenylamine-based dyes (AZ1-AZ6) containing 2-cyanoacrylic acid as an acceptor and various linkers (phenyl, biphenyl, and bithiophene) were synthesized. They exhibited high photovoltaic performance owing to an improved short-circuit photocurrent density (J(sc)) and open-circuit voltage (V-oc). Among them, AZ6 bearing a cyclic thiourea group and bithiophene linker showed the highest power conversion efficiency (PCE) up to 7.29%, which was comparable to that of N719 (PCE = 7.36%).
Push-pull type of diphenoquinoid chromophores as novel near-infrared dyes
作者:Shinobu Inoue、Yoshio Aso、Tetsuo Otsubo
DOI:10.1039/a701626c
日期:——
Novel push-pull diphenoquinoid chromophores, in which one of the
terminal positions carries a strong donor group,
benzo-1,3-dithiol-2-ylidene, and the other a strong acceptor group,
dicyanomethylene, are synthesized and show a strong absorption in the
near-infrared region.
The present invention relates to crosslinkable compounds, to the crosslinked compounds obtained from these compounds, and to processes for the preparation thereof. The invention is furthermore directed to the use of these compounds in electronic devices and to the corresponding electronic devices themselves.
We have synthesized a novel class of four-connecting three-dimensional molecular scaffolds 2-5 based on biaryls for supramolecular self-assembly. The X-ray crystal structure analysis of 2 with ethanol reveals a novel O-H center dot center dot center dot O hydrogen-bonded helical self-assembly in three dimensions leading to the generation of channels in the crystal lattice, The tetraacid 3 also forms analogous channels in which the solvent molecules, viz., DMSO and H2O, reside. The structures of 2 and 3 amply illustrate the potential of three-dimensional four-connecting biaryls in developing functional mimics of inorganic zeolites.
VERBINDUNGEN FÜR ORGANISCHE ELEKTROLUMINESZENZVORRICHTUNGEN