申请人:Samsung Display Co., Ltd. 삼성디스플레이 주식회사(120120164552) Corp. No ▼ 134511-0187812
公开号:KR101554600B1
公开(公告)日:2015-09-22
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提供了含有发光有机物的复合物及其所包含的有机发光器件。
Donor–acceptor–acceptor-type near-infrared fluorophores that contain dithienophosphole oxide and boryl groups: effect of the boryl group on the nonradiative decay
Combination of electron-accepting diarylboryl terminal groups and dithienophosphole oxide spacers with electron-donating triarylamine moieties produces donor–acceptor–acceptor type π-systems, which exhibit emissions in the near-infrared region.
D-π-A Sensitizers for Dye-Sensitized Solar Cells: Linear vs Branched Oligothiophenes
作者:Markus K. R. Fischer、Sophie Wenger、Mingkui Wang、Amaresh Mishra、Shaik M. Zakeeruddin、Michael Grätzel、Peter Bäuerle
DOI:10.1021/cm903542v
日期:2010.3.9
Two donor-pi-acceptor (D-pi-A) dyes, coded as L-3T-DPA 1 and B-5T-DPA 2, were synthesized for application in dye-sensitized solar cells. These D-pi-A sensitizers use diphenylamine donor, an oligothrophene as pi-bridge, and cyonoacrylic acid as an acceptor group that can be anchored to the surface of TiO2. While the two dyes comprise the same donor and acceptor units, the bridging oligothiophene is linear in one case and branched in the other case. Photophysical and electrochemical properties of the dyes were investigated by UV-vis spectrometry and cyclic voltammetry. The dyes were subsequently implemented as sensitizers in dye-sensitized solar cells. Photovoltaic devices with dye 1 showed a maximum monochromatic incident photon to current efficiency (IPCE) of 80% and an overall conversation efficiency of 6.8% under full sunlight (AM 1 5G, 100 mW cm(-2)) irradiation. The photovoltaic performance of branched dye 2 was lower because of less dye loading on the TiO2 surface. The dyes were also tested in ionic liquid and solid-state devices and showed good efficiencies. Long-term stability measurements were performed over 1000 h at full sunlight and at 60 degrees C in ionic liquid devices. Branched dye 2 thereby showed excellent stability retaining 96% of its initial efficiency, while linear dye 1 retained 73% after 1000 h of irradiation.