Investigation of benzo(1,2-b:4,5-b′)dithiophene as a spacer in organic dyes for high efficient dye-sensitized solar cell
摘要:
Two benzo(1,2-b:4,5-b')dithiophene (denoted as BDT) based organic dyes, Dye 1 and Dye 2, containing triphenylamine and carbazole in the molecular frameworks respectively, were synthesized, characterized and applied in dye-sensitized solar cells (DSSCs). The photo-physical, photovoltaic, and electrochemical properties of the two dyes were analyzed in this work. The two dyes exhibit strong charge transfer absorption bands in the visible region. The dyes were applied in dye sensitized solar cells obtaining 11.34 mA/cm(2), 0.75 V and 0.74, for the short-circuit photocurrent density (J(sc)), open-circuit voltage (V-oc), and fill factor (FF) respectively, corresponding to an overall power conversion efficiency of 6.3%. These results revealed that BDT-based dyes are promising dyes for DSSCs. (C) 2015 Elsevier B.V. All rights reserved.
Synthesis and properties of new luminescent hole transporting materials containing triphenylamine and carbazole units
作者:Wenzheng Gao、Shirong Wang、Yin Xiao、Xianggao Li
DOI:10.1016/j.saa.2012.07.124
日期:2012.12
the electron distribution of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) energy levels. The UV-Vis absorption and PL spectra of the two compounds in solid state were found to be similar to that when they were in dilute THF, which suggests that these compounds remain as an amorphous state in solid films. CV measurements show that the two compounds
An electroluminescent device includes a light-emitting layer containing a host material and: (a) a compound of Formula (1):
X
1
—Ar
1
—C(R
1
)═C(R
2
)—Ar
2
(1)
wherein:
Ar
1
represents a divalent aromatic group;
Ar
2
represents an aromatic group;
X
1
represents at least one electron-donating group;
R
1
and R
2
independently represent hydrogen or a substituent; and (b) a light-emitting boron complex having an absorption spectrum that overlaps with the emission spectrum of compound (1). The device serves to improve luminance efficiency while maintaining good color purity.
Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
申请人:CANON KABUSHIKI KAISHA
公开号:US10558133B2
公开(公告)日:2020-02-11
An electrophotographic photosensitive member suppressing potential variation due to repeated use is provided. The electrophotographic photosensitive member is an electrophotographic photosensitive member including a support, a photosensitive layer and a protective layer in this order, wherein the protective layer contains: a resin including a structure represented by a general formula (1) and a structure represented by a general formula (2); and a compound represented by a general formula (3), the molar ratio of the proportion of the structure represented by the general formula (2) to the proportion of the structure represented by the general formula (1) in the resin is 0.0002 to 0.1000 in a molar ratio, and the molar ratio of the content of the compound represented by the general formula (3) to the content of the structure represented by the general formula (1) in the resin in the protective layer is 0.0002 to 0.1000 in a molar ratio.