746651-50-3Relevant academic research and scientific papers
Novel BODIPY dyes with electron donor variety for dye-sensitized solar cells
Liao, Junxu,Zhao, Hongbin,Xu, Yongjun,Zhou, Weinan,Peng, Fei,Wang, Yong,Fang, Yutang
, p. 33975 - 33985 (2017)
Four new donor-π-acceptor (D-π-A) structured organic sensitizers (CB1-4), with N-octyl or N-methoxyphenyl carbazole connected to a 2-cyanoacrylate BODIPY module through their 2 or 3-positions, were designed and synthesized for application in dye-sensitize
Inverted planar perovskite solar cells with dopant free hole transporting material: Lewis base-assisted passivation and reduced charge recombination
Park, Sang Jin,Jeon, Seolhee,Lee, In Kyu,Zhang, Jing,Jeong, Huiseong,Park, Ji-Yong,Bang, Jiwon,Ahn, Tae Kyu,Shin, Hee-Won,Kim, Bong-Gi,Park, Hui Joon
, p. 13220 - 13227 (2017)
Three novel triarylamine derivatives (TPACs: TPAC0M, TPAC2M and TPAC3M), sharing the same conjugation scaffold but possessing different numbers of methoxy units, were designed for high performance hole transport materials (HTMs) of p-i-n planar perovskite solar cells (PSCs). Cyclic voltammetry and absorption results showed that their energy levels would be beneficial to work as HTMs of PSCs, and time-resolved photoluminescence and transient photo-voltage studies proved that TPAC-based PSCs had better charge extraction and more suppressed non-radiative recombination properties than PEDOT:PSS-based PSCs, leading to superior power conversion efficiency (PCE). We confirmed that the methoxy units introduced to the triarylamine derivatives did not cause noticeable changes in their optical properties, such as absorption and bandgap, electrical conductance, measured by conductive atomic force microscopy, and mobility, but the charge extraction and recombination behaviors of TPAC-based PSCs could be improved by increasing the number of methoxy units in the arylamine moiety. X-ray photoelectron spectroscopy revealed that methoxy units could act as a Lewis base passivating the defect sites at the interface between HTM and perovskite, consequently resulting in an increase of their PCE to 17.54% without any dopants.
Novel 2,6-site-substituted BODIPY organic dye sensitizer and preparation method therefor
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Paragraph 0086; 0087, (2016/10/09)
The present invention relates to a novel 2,6-site-substituted BODIPY organic dye sensitizer and a preparation method therefor. The organic dye sensitizer is organic photovoltaic materials with a D-pi-A structure. By taking a meso-site-substituted BODIPY core as a pi bridge framework, the sites 2 and 6 of the BODIPY core is respectively substituted by an electron donor and an electron acceptor. The present invention further discloses a preparation method for the above the dye sensitizer. The preparation method obtains a dye molecule having a general structural formula I by taking 2,4-dimethylpyrrole as an initial reaction raw material, performing a serials of simple synthesis reactions, and finally performing classical Suzuki coupling and Knoevenagel condensation reactions. The dye sensitizer synthesis method is simple, easy to control and high in yield, and has general applicability. When the method is applied to dye sensitized solar cell preparation, a dye sensitized solar cell material with a high fill factor and an ideal photoelectric conversion efficiency can be obtained. The formula I is shown in the description.
Phenothiazine and carbazole substituted pyrene based electroluminescent organic semiconductors for OLED devices
Salunke, Jagadish K.,Wong,Feron, Krishna,Manzhos, Sergei,Lo, Ming Fai,Shinde, Durgaprasad,Patil, Abhijeet,Lee,Roy,Sonar, Prashant,Wadgaonkar, Prakash P.
, p. 1009 - 1018 (2016/02/10)
Due to their easy availability, low cost and opportunities for exploiting reactions of bromo substituents, 1,3,6,8-tetrabromopyrene has attracted major attention in the organic electronics community for designing and constructing novel classes of pyrene b
Synthesis, characterization, photophysics and electrophosphorescent applications of phosphorescent platinum cyclometalated complexes with 9-arylcarbazole moieties
Ho, Cheuk-Lam,Wong, Wai-Yeung,Yao, Bing,Xie, Zhiyuen,Wang, Lixiang,Lin, Zhenyang
scheme or table, p. 2735 - 2749 (2009/12/06)
A series of cyclometalating platinum(II) complexes with substituted 9-arylcarbazolyl chromophores have been synthesized and characterized. These complexes are thermally stable and most of them have been characterized by X-ray crystallography. The phosphorescence emissions of the complexes are dominated by 3MLCT excited states. The excited state properties of these complexes can be modulated by varying the electronic characteristics of the cyclometalating ligands via substituent effects, thus allowing the emission to be tuned from bright green to yellow, orange and red light. The correlation between the functional properties of these metallophosphors and the results of density functional theory calculations was made. Because of the propensity of the electron-rich carbazolyl group to facilitate hole injection/transport, the presence of such moiety can increase the highest occupied molecular orbital levels and improve the charge balance in the resulting complexes relative to the parent platinum(II) phosphor with 2-phenylpyridine ligand. The solution-processed electrophosphorescent organic light-emitting diodes doped with these platinum-based phosphors have been fabricated which showed a maximum external quantum efficiency of 2.77% for the best device, corresponding to a power efficiency of 3.48 lm/W and a luminance efficiency of 8.49 cd/A. The present work enables the rational design of platinum-carbazolyl electrophosphors by synthetically tailoring the structure of carbazolylpyridine ring that can permit good color-tuning versatility suitable for multi-color display technology.
