1314556-70-1Relevant articles and documents
Organic solution-processible electroluminescent molecular glasses for non-doped standard red OLEDs with electrically stable chromaticity
Bi, Xiaoman,Zuo, Weiwei,Liu, Yingliang,Zhang, Zhenru,Zeng, Cen,Xu, Shengang,Cao, Shaokui
, p. 865 - 875 (2015/06/30)
Abstract Organic light-emitting molecular glasses (OEMGs) are synthesized through the introduction of nonplanar donor and branched aliphatic chain into electroluminescent emitters. The target OEMGs are characterized by 1H NMR, 13C NMR, IR, UV-vis and fluorescent spectra as well as elemental analysis, TG and DSC. The results indicated that the optical, electrochemical and electroluminescent properties of OEMGs are adjusted successfully by the replacement of electron-donating group. The non-doped OLED device with a standard red electroluminescent emission is achieved by spin-coating the THF solution of OEMG with a triphenylamine moiety. This non-doped red OLED device takes on an electrically stable electroluminescent performance, including the stable maximum electroluminescent wavelength of 640 nm, the stable luminous efficiency of 2.4 cd/A and the stable CIE1931 coordinate of (x, y) = (0.64, 0.35), which is basically in accord with the CIE1931 coordinate (x, y) = (0.64, 0.33) of standard red light in PAL system.
Efficient Organic Sensitizers with Pyridine-N-oxide as an Anchor Group for Dye-Sensitized Solar Cells
Wang, Lei,Yang, Xichuan,Zhao, Jianghua,Zhang, Fuguo,Wang, Xiuna,Sun, Licheng
, p. 2640 - 2646 (2016/12/23)
Five organic dyes with pyridine-N-oxide as the anchor group and electron acceptor have been synthesized and applied in dye-sensitized solar cells (DSSCs). Benzothiadiazole was introduced in the conjugation system to increase the electron withdrawing properties, FTIR spectra showed that the coordination was between the pyridine-N-oxide and the Br?nsted acid site on the TiO2surface. The relationship between different dye structures and the performance of the DSSCs was investigated systematically. The location of the thiophene unit was studied, and the direct linkage of benzothiadiazole with pyridine-N-oxide was beneficial to broaden the absorption. The donor–acceptor–acceptor-configured dye WL307, which has 2-ethylhexyloxy chains in the donor part, showed the best efficiency of 6.08 % under 100 mW cm?2light illumination. The dye series showed a fairly good stability during the one month test period.
ORGANIC DYE, DYE-SENSITIZED METAL OXIDE SEMICONDUCTOR ELECTRODE AND DYE-SENSITIZED SOLAR CELL
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Page/Page column 44-45; 52-53, (2013/03/26)
An object of the present invention is to provide a dye sensitizer for a solar cell having stability and an excellent conversion efficiency. There is provided a dye sensitizer represented by the following general formula, to which a donor site (D) and an acceptor site (A) are bound via linkers (L1)n and (L2)n: (φ is an aromatic ring with or without heteroatom(s); D is a triphenylamine derivative, a carbazole derivative, a coumarine derivative or an indoline derivative; A is an organic residue having an acidic group; each of L1 and L2 is an optionally substituted divalent alkenyl group, aromatic group or heterocyclic group, and n represents an integer of 0 to 3).